invite friends ⋅ share email twitter ⋅ join discord whatsapp(2ck)
support the site ⋅ become a member ⋅ unscramble the egg
free120  nbme24  nbme23  nbme22  nbme21  nbme20  nbme19  nbme18  nbme17  nbme16  nbme15  nbme13 
Welcome to drzed’s page.
Contributor score: 187


Comments ...

 +0  (nbme23#9)

My silly mnemonic...

Schizotypal: are your archeTYPAL weirdos (no offense to anyone, just a mnemonic!)

Schizoid: like to avOID people/attention

AvoidANT: generally wANT to like people/attention


 +2  (nbme23#17)

"During strength testing the patient has pain and weakness with abduction, particularly with simultaneous shoulder internal rotation"

This is a descriptive way of describing Neer's impingement sign, which is a (fairly) specific indicator of shoulder cuff tendon impingement; the most commonly impinged tendon of the rotator cuff being supraspinatus of course.


 +4  (nbme23#46)

Lol I was stupid and put increased serum cholesterol concentration because I thought that the fluid loss would lead to a concentration of substances in the ECF (e.g. like how dehydration can trigger gout). RIP.

focus  "The post-burn hypermetabolic response increases the metabolic rate to compensate for the profound water and heat loss severe burn patients suffer. Water loss approaches 4000 milliliters per meter squared burn area per day [38-41]. The body’s natural response to this insult, partially mediated by increased ATP consumption and substrate oxidation, is to raise core and skin temperatures 2°C above normal compared to unburned patients [42]. This response is similar to the response seen during cold acclimatization. In fact, patients that do not mount this response are likely septic and or have exhausted physiologic capabilities to maintain needed body temperature [43]." https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3776603/ +1

 +0  (nbme23#6)

Of all these viruses, Hep B is the only one that a child, if infected, would be a chronic carrier. Thus we should screen to make sure that we can prevent future risk of cirrhosis, etc.


 +2  (nbme22#41)

You do not need to memorize a formula to know this, as long as you know the units (which are SO much easier to remember as they are intuitive). The answers are mostly clearance and steady state, which means you can cancel units to see if the answer choice makes sense.

For example, since CL has units of L/min and Css has units of mg/L, then (A) works out because L/min x mg/L = mg/min which is the correct units for infusion rate.

Whereas (B) CL/Css would not work because those units would be L/min / mg/L = L^2/min*mg, which does not make sense.

So if you just cancel some units, you can answer many of the questions.

Huge disclaimer: this won't work with things like half-life, because there is a factor of Ln(2) that has no units, so you have to memorize formulas that have factors before them.


 +7  (nbme22#30)

I tried to use logic to answer this question (I did not know about the hexosamine pathway). Here is my attempt--this is probably wrong somewhere.

I figured that if you want to make glucosamine, you need to combine glucose + an amine group

(A) Arginine I knew was involved in donating nitrogen, but it is in the urea cycle, so I figured this was probably not the answer but it had potential. I figured that the major way this compound removes its nitrogen is through urea, though.

(B) ATP. Since F6P already has the phosphate group, I figured ATP is probably not necessary as the compound in question already has a PO4 group.

(C) Carbamoyl phosphate. I knew this was involved in both the urea cycle and nucleoside synthesis, so this was less likely. It also is the product of a NH3 and CO2 so that means that I wouldn't expect it to donate an amine group

(D) Glutamine I figured has an amine group attached to it ready for donation. I also know that transamination reactions are common with amino acids and alpha-ketoacids (e.g. alpha ketoglutarate with alanine can get you glutamate and a pyruvate via ALT) thus it made sense that an amino acid could donate an amine group.

(E) The only thing I knew about NAG was that it was used in the urea cycle as an allosteric activator of CPS, so I didn't think that it was useful as a donator of nitrogen since its function is to help aid nitrogen excretion.

So then I was stuck between A and D, but based on transamination reactions, I picked D.


 +0  (nbme22#18)

Unfortunately, I chose (C) thinking that the down-regulation of receptors would lead to needing higher doses for efficacy (patient is using a patient controlled pump), however tolerance to miosis does not develop, and thus eventually this side effect would occur.

Could anyone point out where my train of thought is incorrect? I suspect that my assumption of the patient increasing their dose is not warranted?

aag  I also chose this, @drzed but looking back, if there was down-regulation of the receptors then she wouldnt have enough receptors to cause altered mental status and respiratory depression, side effects that you do develop tolerance to. How I would have remembered that morphine is metabolized to other active metabolites is beyond me. Happy studying hope this helps. +1
waterloo  He's also on a controlled analgesic pump. I've been on one before, and basically you can't keep pumping yourself constantly with it. You can hit the button, get a small dose, and then have to wait a bit of time to hit it again. The next time you hit the effect (at least for me) was always the same meaning I wasn't becoming tolerant to it (I was on one for a week). This controlled pump phrase has come up in another exam, which makes me think when they say that they want you to think this isn't someone who's taking alot of meds all the time. I also like aag thought process. +

 +11  (nbme22#50)

I'm a simple man, I see encephalitis and temporal lobe involvment, I click herpes.

asharm10  hahaha true that, overthinking is the reason for getting so many questions wrong +

 +11  (nbme22#45)

(A) aggregates of large atypical lymphocytes = infectious mononucleosis (CD8+ T cells responding to EBV infection in CD21+ B cells)

(B) Granulation tissue containing pseudohyphae and budding yeasts = candidiasis

(C) Intracellular yeasts in macrophages = histoplasmosis

(D) Macrophages containing acid-fast bacilli = mycobacterium

(E) Multinuclear cells containing intranuclear inclusions = cytomegalovirus (or most members of the herpesvirus family)


 +1  (nbme21#44)

If more people have the disease in your population, then the chance of a positive test result actually being positive will increase -- more people have the disease, so you're more likely to be "right"


 +2  (nbme21#17)

Let's say you didn't know methionine was essential.

(A) Alanine -- you can create alanine from the enzyme ALT (alanine aminotransferase), thus this enzyme cannot be essential

(B) Aspartate -- you can create aspartate from the enzyme AST (aspartate aminotransferase), thus this enzyme cannot be essential

(C) Glycine -- this one is low yield, but it is made from serine (serine + THF -> CO2 + Me-THF + glycine). If you didn't know about this, you had a 50/50 shot

(E) Tyrosine -- you can create tyrosine from phenylalanine (unless of course you have phenylketonuria), and thus this cannot be essential.


 +0  (nbme21#14)

Perhaps this is an incorrect way of thinking about this, but I always associate the virulence of Strep pneumo to its capsule, but I only associate the K capsular antigen of E. coli to meningitis (recall that E. coli has other specific virulence factors like fimbriae for UTI).

So basically, I figured that the capsule of Strep pneumo is involved in more disease processes (MOPS) than the capsule of E. coli (mostly meningitis), and thus I chose Strep.

b1ackcoffee  You are right, this is INCORRECT way. Capsule helps in hematogenous spread by protecting from phagocytosis causing sepsis, meningitis, pneumonia, i.e. more systemic infections. +

 +10  (nbme21#1)

mnemonic: schizOID (avOID companionship) vs avoidANT (wANT companionship)


 +1  (nbme21#35)

Perhaps I under-thought this questions, but it is highly unlikely to have HYPER- of anything when consuming large amounts of water, because whatever ion is present is going to get diluted. So in the case of normal gap acidosis from diarrhea, yes there may be an initial hyperchloremia, but the water is going to dilute it out.

Between hypoglycemia and hyponatremia, it is more likely to be hyponatremia because the child had seizures


 +1  (nbme21#18)

SIGECAPS criteria: (1) feeling weepy/overwhelmed, (2) fatigue/irritability, (3) anhedonia, (4) difficulty sleeping, (5) "I feel guilty...", for a period of 6 weeks = meets the criteria for a depressive episode, and since this was in the post partum period, may be post partum depression.

Next best step is to screen for suicidal ideation/thoughts of harming the child.


 +7  (nbme20#48)

First sentence of the stem: he has a 6-week history (e.g. >2 weeks) of depression (1), difficulty sleeping (2), fatigue (3), decreased appetite (4), and poor memory/concentration (5)

For a diagnosis of MDD, you need a 2 week history of 5 of the SIGECAPS symptoms which he meets (he is only missing suicidal ideation and interest in activities). Thus he meets the diagnostic criteria for a major depressive episode, which means that treatment is indicated with an SSRI.

For the other cardiovascular factors, the only ones proven to improve mortality are statins, ACEi, BB (esp. carvedilol in heart failure), and spironolactone. None of those were answer choices, so MDD treatment was the best choice.


 +12  (nbme20#38)

Patient has low serum sodium = hyponatremia.Given that the patient has a LOW URINE OSMOLARITY, it suggests that ADH is NOT active. The only way for someone to have hyponatremia AND a low ADH (in this case) is through psychogenic polydipsia (e.g. if it was SIADH, the urine would be MAXIMALLY concentrated and it is NOT in this case)

(A) would cause central DI -- no ADH means one develops hypernatremia as free water is lost in the urine, thus concentrating the serum.

(B) osmotic diuresis could cause hypernatremia due to loss of free water in the urine

(C) degradation of ADH leads to DI which means one develops hypernatremia

(E) resistance to ADH (nephrogenic DI), again, hypernatremia.





Subcomments ...

submitted by keycompany(269),
unscramble the site ⋅ become a member ($35/month)

cb9rc/gpm.wtlsPln08c/ahhtniispv..5//eito6Mn./wC0:m/w2

eslrO niSg si a eiyttwov-i,sisnl ptl-fswcoiycei fdnngii of Mcgkbreneo siiAsoltcerlrsrooe M)(A tdhrareaizcce by "a elalbapp gauhtohl s,uellsspe laaird artrey hlewi eht BP fcfu is ilanftde veboa ticolyss serr.sup"e

It si biposlse that : iaeh)ret The iowecptcl-isiyf fo this estt easnm ti is salo ppcieaabll ot istolerahssrcoe (tno ustj b)M )A The BMNE cerintryloc lisepim atht AM si gclhatbiaernen hitw cosrtheoe.srails

bubbles  This was my reasoning, too. I thought this was Mockenberg for sure +  
hello  I don't think think it's a type. According to 2 other comments: "It's atherosclerosis because it said “radial artery is NON-pulsatile BUT REMAINS PALPABLE even as the cuff is inflated”--> normally, you can’t feel the artery when the cuff is overinflated b/c overindlation occludes blood flow and arteries are squishy (compliant); BUT if you had atherosclerosis, which is literally hardening, you would not be able to compress the artery, and neither would you expect the normal radial (outward) expansion of an artery during systole. (that is, the pulses!): "If if something were to not be palpable then it would have to collapse -- atheroclerosis prevents this vessel collapse." +16  
arcanumm  I agree, I just reasoned that atherosclerosis would not be thicker when the lumen is blocked. I don't think they were going for Mockenberg at all. +  
arcanumm  would be thicker +  
drzed  Atherosclerosis isn't common in the radial artery though... it's common in the abdominal aorta + coronary, popliteal, and carotid arteries. I am not going to assume a guy has radial artery atherosclerosis when he is in his 80s without a dyslipidemia syndrome over monckeberg calcification! +  
haydenelise  Would've thanked you for your explanation @mdmike if it hadn't included the "whoever upvoted this is dumb" comment. What a turd lol +4  


submitted by mcl(534),
unscramble the site ⋅ become a member ($35/month)

To pdxnae on tsh,i atwh we nthki nphespa tiwh orPnss'niak iesedsa ad(n pninonmska)asrii is an nlabamcie tbeween dipaemon dna nloiyccet.hela tI skmae reom ssnee if yuo okol ta hsti daa,grmi anpgiy raiaulpcrt entottian to the rdniietc .wyhatap ossL of pricemagnoid A()D orunesn mfor hte nisabttusa gniar S(cN) uetssrl in nncostat aovncaitit of hesot ChA gcensrtie nuns,oer ihwch etalytmliu lstesur ni oiinnbitih fo hltsuaam from naitniiigt moetnmsv.e Tefrehoe,r ugnis roigtclcnniiahse hlep hwit ikimsaannrnposi ynrcedosa ot a.dlhol

mcl  Also, you don't wanna use sinemet since that would be counterproductive +2  
drzed  Whaaat? How could increasing levels of dopamine in a psychotic patient possibly be a bad thing? +  


Stellate Ganglion is not involved in the regulation of heart rate: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2872892/ Gotta love those shit NBME questions.

drzed  Lol did you read the article: "the right stellate ganglion block (RSGB) decreased heart rate" +2  


submitted by seagull(1182),
unscramble the site ⋅ become a member ($35/month)

oS, T/T6/-521 rea het cpysemhaitt lelev ofr the .rateh heT tetlleas nagonilg aer recialvc ehmpayictts agg.nlnoi iTsh unqteiso essme more iroecnctr ro( a uegh lpae) ot m.e utB hye, I wokn peopel ilwl gdisra.ee

dentist  you're right! heart rate is the only option under sympathetic control. +  
drzed  The cervical ganglion is a fusion of the last few cervical levels and the first thoracic level, so it is plausible. +  


submitted by kentuckyfan(44),
unscramble the site ⋅ become a member ($35/month)

oeictN that )A inhcscBonr,totocroni )B runallGda ,ontcseeri )D sPlrtiiss,ea E) soandilaoiVt fo kisn ear lal eudrn asairytahppcmet cnr.otol

eTh nlyo yaihtcpesmt otrocln is rheat t,rae hichw udowl sa.neirec

drzed  Vasodilation of the skin is under sympathetic control as well -- beta-2 receptors when stimulated cause vasodilation (via increase of cAMP in vascular smooth muscle). The key is recognizing that stimulation of a GANGLION of the pns will lead to release of NOREPINEPHRINE, which preferentially stimulates alpha-1 receptors. Those receptors will cause vasoconstriction. If the question asked what happens when you stimulate the adrenal medulla, the answer would be (potentially) vasodilation. This is because the adrenal medulla releases EPINEPHRINE which preferentially stimulates beta-1/2 receptors. +5  
jesusisking  @drzed Awesome explanation except I think sympathetic response induces vasoconstriction in the skin though vasodilation in the muscles! +1  
usmile1  @jesusisking yes you are correct! α1: vasoconstriction in skin and intestine ; β2: vasodilation in skeletal muscle (transmitter: only epinephrine!) +  


submitted by mousie(179),
unscramble the site ⋅ become a member ($35/month)

Wyh no aisewt?gn I mane I get sscEtay is rylapobb eht udgr of eocchi freeob na all tgihn aecdn aptyr l)ol( btu d'otn ndausndter ywh there uwlod eb codl ierteemixts nad no ganiwets hnew is FA ti says hyprheearimt and ?hobd??ra?

sympathetikey  FA says, "euphoria, disinhibition, hyperactivity, distorted sensory and time perception, bruxism. Lifethreatening effects include hypertension, tachycardia, hyperthermia, hyponatremia, serotonin syndrome." So I think they wanted you to see Sinus Tachy and jump for MDMA. Idk why Ketamine couldn't also potentially be correct though. +7  
amorah  I picked ketamine because it said no diaphoresis. But if you need to find a reason, I guess the half life of ketamine might rule it out. Remember from sketchy, ketamine is used for anaesthesia induction, so probably won't keep the HR and BP high for 8 hrs. In fact, its action is ~10-15 mins-ish iv. +9  
yotsubato  Because the NBME is full of fuckers. The guy is probably dehydrated so he cant sweat anymore? +17  
fulminant_life  you wouldnt see tachycardia with ketamine. It causes cardiovascular depression but honestly i saw " all-night dance party" picked the mdma answer and moved on lol +8  
monkd  Ketamine acts as a sympathomimetic but oh well. NBME hasn't caught on to ketamine as a drug of recreation :) +3  
usmleuser007  Why not LSD? +  
d_holles  @usmleuser007 LSD doesn't cause HTN and ↑ HR. +  
sbryant6  @fulminant_life FALSE. KETAMINE CAUSES CARDIOVASCULAR STIMULATION. +8  
dashou19  Take a look at why the patient has pale and cold extremities. "Mechanistic clinical studies indicate that the MDMA-induced elevations in body temperature in humans partially depend on the MDMA-induced release of norepinephrine and involve enhanced metabolic heat generation and cutaneous vasoconstriction, resulting in impaired heat dissipation." https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5008716/ +3  
drzed  @sbryant6 you're both saying the same thing. Ketamine has a direct negative inotropic effect on the heart, but it is also a sympathomimetic. You are both correct. +  
paperbackwriter  @drzed Can you please site that? As far as I understand ketamine has a sympathomimetic effect on the CV system --> increased chronotropy and BP. I also don't see how they're saying the same thing. One person said "stimulation" and the other said "depression" +  
nutmeg_liver  People tend to drink a lot of water on MDMA. I just guessed the confusion was a result of hyponatremia (too much free water) but no idea if there's any data saying that people tend to become hyponatremic due to water over-consumption on MDMA lol. +1  
cassdawg  "Despite possessing a direct negative cardiac inotropic effect, ketamine causes dose dependent direct stimulation of the CNS that leads to increased sympathetic nervous system outflow. Consequently, ketamine produces cardiovascular effects that resemble sympathetic nervous system stimulation. Ketamine is associated with increases in systemic and pulmonary blood pressures, heart rate, cardiac output, cardiac work, and myocardial oxygen requirements."(https://www.openanesthesia.org/systemic_effects_of_ketamine/) +  


submitted by sajaqua1(472),
unscramble the site ⋅ become a member ($35/month)

ehT patitne ahs a rripo isryhto fo coythtsmreey whit ilabtarle msypoth-,gacooooperinl dan eevcrdie rneeaxtl ambe ndoatiria to het .sleipv heT atintpe nwo ysalpsdi oodriepyshsrhn nda udt,ryheeror twhi datlsi reaturle oagwrnrin yliba.llarte Teh iketsleil otipon is thta ew rae segeni aneiohdss mrfo vpuoesri rusrgye trcnstcoi teh u,rseetr gainusc .tshi

E) lohealirtU ncoamiarc a(slo cdella satoinaritln elcl nicmaaocr) is lsao a bslps.ytiiio htWa eksma isth kieuynll is the atlinoc:o l.tabirela eTh rirop tyteeyormhsc adn ebtralial ayohnetogmocsoip-lpor udolw leeva acsr eisstu on bhot sesdi fo eth obdy, utb eth dosd fo otliraelhu crmaoniac aiinrsg elilyrabtal rea eyrv msi.l

A) hTe aepntit adh a chyetr,tmsoye so teh sdod of truernecr creavlic icacanorm aer slao ycrenidilb .wol C) nad D) terrlhUa lnoomaycd nad ureartlh itanoiasnlrt elcl ppmllaaoi ear in eth rwong tncoaoli ot octcuna rfo eatabirll urleatrh arnwrngoi htwi drorerhuy.te

stinkysulfaeggs  Great explanation - just one addition. The retroperitoneal fibrosis could also be a direct consequence of the external beam radiation. It's linked to both causes. Either way, it's a better fit than urothelial carcinoma (in retrospect). +13  
spow  Why would the onset be 15 years later though? +3  
drzed  I was thinking the same thing @spow. I had put urothelial carcinoma, thinking that a field defect would result in bilateral tumor. +3  


submitted by temmy(117),
unscramble the site ⋅ become a member ($35/month)

gdcrnciAo ot Dr .r.taSta Aoemoradiccnan si teh toms mcmnoo ucesa of nugl arcnce in eeflma non msr.kose

drzed  Correction: he says it is the most common in NONSMOKERS and FEMALE SMOKERS. +7  


submitted by krewfoo99(80),

Why would perforins be the wrong answer? Wouldnt accumulation of toxic proteins cause the cell to undergo apoptosis ?

ergogenic22  Bortezomib does not directly activate perforin. It directly inhibits the proteasome which → enables CD8+ T cells to initiate apoptosis → via perforin release (in essence a downstream effect). +4  
drzed  Exactly, it triggers the cells to undergo apoptosis which means that it can either be cell mediated (perforin and granzyme via FAS/FASL) OR it could also be through the intrinsic pathway (e.g. mitochondrial; cytochrome c) +  
powerhouseofthecell  Question: But how do CD8 cells have a role in this process exactly in the vignette? Is it saying that when the proteins build up, only then do CD8 cells come and instead of MHC I presenting to proteasomes, they present it to CD8 to initiate apoptosis? +  


submitted by cbrodo(45),
unscramble the site ⋅ become a member ($35/month)

heT stripoero slncuom s(scuFliuac c/nutsescsFaciluuua )gcrisila ayrrc inoofmirnta to eht iranb gdrienagr ni,poporpcoiter toivr,naib nmtsiicdivraie oucth dan upe.ssrer hPlaiycs amxe nnigsidf gsgesut a oenisl eerh (eht iihcoltaapmns acrtt eascirr ian/cpirppkin and ,muperaretet dan heets wree oma).nlr nciSe het antpiet sah romlbnaa nfnigdsi ni het werlo tm,eieesrtix adn rmaoln ignsifnd ni the peurp itxi,mteeres hte wnrsae si aFuicusscl racs.ilgi sThi is beuesac niotomfnari fomr obyd arsae welbo eht lelev of 6T is rciaedr yb rilicgsa and nrmtniooaif romf dboy eraas evabo hte lvele fo 6T si ircdrae yb uteasnuc.

kai  kick Goals (gracilis) with your feet Cook and eat (cuneatus) with your hands +3  
temmy  i remember gracilis is for legs by saying i have graciously long legs and they are inside while arms can spread out to remember their orientation on the spinal cord +3  
jess123  I remember it as gracilis = grass so feet haha +4  
link981  Just to add found on page 492 on FA 2018. +  
charcot_bouchard  Hey Temmy, I can spread my legs too :) +  
maxillarythirdmolar  I can't feel GRACIE's ~fine touch~ as she ~vibrates~ my balls. +3  
cat5280  Could someone please explain why you were able to eliminate the spinocerebellar tracts? +1  
drzed  Lmao I remember gracilis because of the gracilis muscle in the legs! +3  
alexxxx30  cat5280...so spinocerebellar tract does 4 things to know 1. proprioception in the Romberg test 2. intention tremor if damaged 3. shin to knee test 4. dysdiadochokinesia (being able to rapidly pronate/supinate the upper extremity) yes the patient has proprioception issues, but the other symptom of vibration loss points us more to a fasciculus gracilis issue. If the patient had presented with proprioception and and intention tremor then we would think spinocerebellar +2  
alexxxx30  adding to my comment^ I would commit these 4 things to memory as I have gotten several questions concerning this topic (there were 2 questions on this exam where spinocerebellar tracts are involved). Memorize them and it might get you 1-2 extra points! +  


submitted by seagull(1182),
unscramble the site ⋅ become a member ($35/month)

iPo.wpetrr:i/kkgip.n(bgir/foi)/eosylohwd_eonati/igda

Hree si a letilt tib no pie.Hpodogreornaf ti sephl

jcmed  I'm dropping out +  
drzed  This question doesn't have to do with proof reading, even though it is mentioned. It is just saying this: you can make all the misfolded proteins you want (e.g. proofreading can be messed up), but it has no relevance to the PROGENY. Why? The progeny of a cell is dependent on DNA replication only--so long as your DNA is perfectly replicated, the progeny will come out perfect. You don't need to worry about RNA to make DNA (unless you're HIV, of course!) +4  


submitted by step420(33),
unscramble the site ⋅ become a member ($35/month)

viRnriato tibsnhii 4!P5CY0 oS ouy nac use ti ot soobt the aenctrtnocoin fo eht herot esrPtoae tsiihnbroi by irpegtnnev eihtr libtsommea yb 0CP!4Y5

mousie  who knew +1  
sympathetikey  Right on (thanks sketchy) +6  
mguan1993  MAGIC RACKS is a good mnemonic ive heard for 450 inhibitors (macrolides, amiodarone, grapefruit, cimetidine, RITONAVIR, alcohol (chronic), cipro, ketoconazole, sulfa +3  
criovoly  "CRACK AMIGOS" Cimetidine Ritonavir Amiodarone Ciprofloxacion Ketoconazole Acute alcoholism Macrolides Isoniasid Grapefruit juice Omeprazole Sulfonamides +5  
drzed  Macrolides EXCEPT azithromycin -- they like to trick you with that one. +1  
steatorrhea  chronic alcohol induces 450, acute alcohol inhibits 450 +  


submitted by sajaqua1(472),
unscramble the site ⋅ become a member ($35/month)

heT nsgeil stmo mptnartio htgni uoatb siht rgsso oyhpgtola is ahtt teh sedeias si nra.uilulmdot hiTs aniistcde ametsatess rmfo dstitna .esist

evrLi abssessec era ysluua inrlg,usa ifldel ithw ercmya leolyw ups, nad mya sowh a orbufsi pusl.cea iorsshirC nofte ohssw a ylwleo ocrlo eud ot yfatt gecnha as ellw as ieetnageevrr dnsoel,u ciwhh rea ont nperste ehr.e A acflo luardno palipesayhr is a uanirslg murto fo het rl,evi dan stih is .tnorulimlaud ispiHaett B si a ettlil eadrrh ot iigsdhitsun aceusbe rfom awht I cna llte it acn eb uodtmrilualn ni osem ssae,c tub htsi reilv aosl hwsos neno fo teh ecssiorsl fmor cncrioh ifnalmiantom ttha wloud ekiyll yaccpoanm pHe B. lilayn,F ew ees no kard oiooctndarsli to actnedii racno.iftni

monkd  It doesn't explain the sudden death, but I suppose they aren't asking for that! +4  
charcot_bouchard  I hate this type of ques. Here it is. Tell me what it is? +2  
divya  also, a liver infarct is unlikely due to rich dual blood supply. +1  
drzed  @divya Rather, if there was an infarct, it will be hemorrhagic, not pale. +1  
llamastep1  Multiple solid lesions on a healthy liver = meta. I assumed breast wouldn't meta to liver (it's usually GI cancers) but it makes sense since all the blood gets filtered by the liver at some point. TIL! +  


submitted by sugaplum(245),
unscramble the site ⋅ become a member ($35/month)

ywalsa ebmemrre meht in dorre iwht ma,oflru TSSAIIE=E
and eth tow no hte DNE era CTDU-IDOAN

makinallkindzofgainz  The supraspinatus AB-ducts. The Subscapularis ADDucts +  
makinallkindzofgainz  disregard my comment, I misread what you meant +  
drzed  How are you supposed to remember which S is which? +2  
drschmoctor  @drzed "Supra" = on top, so the 1st S is for supraspinatus. +1  
usmleaspirant2020  according to Physeo : INFraspinatus--EXternal rotaTION------INF-ECTION +  
destinyschild  wow, sugapulm, that mnemonic is gold. you are gold. +  


submitted by sympathetikey(1028),
unscramble the site ⋅ become a member ($35/month)

rPe FA (p.g 6)6:3 enCocrginn eatbrs c.ae.c.nr

"cpnfioAmaitlipornrs/oeivxese fo sgetetorpe/osrnre onge pertocser ro rBe2-cb RH,E(2 aEn FG coretrp)e si nomom;c RE ,⊝ RP ⊝, H nRe/dnauE2 ⊝ mfro ermo "gaer.gissev

sympathetikey  FA 2019 +1  
meningitis  Why others not it: Anticipation: Trinucleotide repeats; CAG (Huntington), CTG (Myotonic dyst), GAA (ataxia telangiectasia), CGG(Fragile X) Chromosomal rearrangement: Many but can think of Trisomy 21, BCR-Abl, etc Imprinting: Prader willi, angelman Loss of heterozygosity: loss of a single parent's contribution to part of its genome. A common occurrence in cancer, it often indicates the presence of tumor suppressor gene in the lost region. +1  
kai  trinucleotide repeats are not associated with breast cancer Neither are chromosomal rearrangements BRCA1,2 tumor supressor genes are associated with breast cancer, which is why I chose E, but I guess I should have bought the new First Aid.......... +  
charcot_bouchard  GAA is Freidrich Ataxia +3  
tulsigabbard  So is the amplification of the receptors unrelated to BRCA 1, 2? I'm still stuck on this as Sketchy states that breast cancer falls under the "two-hit" model. +  
tallerthanmymom  @tulsigabbard I think one of the keys here is the question stem; " what is the most likely cause of the OVERexpression in this pts tumor cells?" --> I think that the "2-Hit" model would lead to UNDERexpression of a tumor suppression gene rather than overexpression. Whereas amplification would cause OVERexpression of the HER2/estrogen and progesterone receptors. But, I don't think that amplification would be the answer if they were asking about a triple negative cancer. +1  
tallerthanmymom  Also this is on page 632 of FA 2018 for those using that version +  
tulsigabbard  @tallerthanmymom - thank you! +  
drzed  I can understand why @tulsigabbard dropped out of the race--she's taking step 1 soon LOL +1  


submitted by mousie(179),
unscramble the site ⋅ become a member ($35/month)

ywh osed tmntteaer of oryhpithyod (thwi eoheyxvnortli m'I )simgsnua earisenc risk fro o?htyyapm I ecohs it ymlpsi bc tsi a mcomno vedeasr fetcfe of atstisn btu I to'dn yrlale seutdandnr woh irtngaet sdirhitohpmoyy at het meas ietm wlodu evha hnngtyai to do htiw it ??? hepl e!epsal

yb_26  They are just asking about side effect of statins, not about treatment of hypothyroidism +5  
mjmejora  Hypothyroidism is just a red herring. +  
ususmle  statins cause both hepatotoxic and mypopathy so I want for hepatotoxic:( I thought usmle expects different stuff +1  
drzed  Statins don't cause 'toxic hepatitis' they just cause a mild asymptomatic rise in LFTs that is reversible with discontinuation of the drug. The more worrisome side effect is of course, myopathy +2  
tyrionwill  statins cause both liver injury and myopathy in a dose related, so kidney failure increases their dose, which leads both liver and muscle risk elevated; Pravastatin is said less liver concerns but the myopathy, so choose myopathy when renal failure. +1  


submitted by thotcandy(59),

i figured it was cocaine or amphetamines so I picked plasma free metanephrines. Why is this not correct?

According to this:

Sympathomimetics: Ephedrine, Pseudoephedrine (Sudafed), Amphetamines, Albuterol (Proventil) can cause positive results in serum metanephrines.

https://www.ncbi.nlm.nih.gov/books/NBK278970/table/pheochromocytoma.table4drug/

drzed  Because a toxicology screen would both answer your question (e.g. that it could be amphetamine abuse) and would also pick up any other drugs that the patient might have been using. So even though the pre-test probability is high for amphetamine use, lets say it was something else, well then the tox screen would pick that up as well. Or lets say that it was simultaneous use of two drugs, same scenario. +2  


submitted by sajaqua1(472),
unscramble the site ⋅ become a member ($35/month)

In an yredell eaitptn whti oiedalst levteead lknealai phheaoaspts (anolrm uesmr cuailcm nad hoptaspeh) gts'aPe seaieds fo bone ohsdlu eb ta eht otp of eth lfdiirtfae.ne Tsih adeessi is due to oitdregnsyula of totlaoecssic dna itoostsclaeb vacyiitt; itrfs na tiniali cslototase atepyrvhcitiy s,hape etnh sirencaed obotsaetls tivtcaiy ofr a rtx,mieu ehtn stsootsclea btunr""ou lneaigd to -oameoirlinertzniva nad ccsileotr eobn u.aslqpe nI ,itddnioa itsh can eeartc seunioeoratrv tuhsns ni the neobs whhci rcaeessde ,sicserenta dgaeiln ot hghi tuoput aacicdr rueifal (a rimlasi emoprlb can iresa in arorteeunviso iusstlaf mfro oobld as.i)iylsd nO gstlyoioh it llwi hvea a oa"csim" tnre.pat

-)A Amualrnesy nobe ctsy- lerylga a otucrpd fo tyyaitvcehrip of aos,otlcstse hits ucocrs orem enfot ni the ilm,bs dan wshso a sictcy acesp ihwt llaobinok-el i.naltido )B omirc-aAsonag aaacosringmo of the nebo si n mtlaos yerplu lityc e.lnsio hTye uocrc reom lynfueqter ni yruogne e.elpop )C iincNa iede-incycf I anc indf tghinon aoutb nmitiabv 3B feneyidicc niovnlgvi eb.son B3 teniccdefi lsesrut in ealpg,alr iwth teh cscails eThre Ds-' eidttsrami rsh(a kcecneal no C43/C dear),mmteo aeetndm,i adn rhdaaei.r )E atsaermco-soO Fnoud slamto exelylcisuv in ugyorne epp,leo htis boen rtoghw sccuor ta eth rgowht taepl, aruirytalpcl at eth poliaxrm dne fo eth a,itib adtils nde of hte me,fru ro mxalirpo edn fo the umuehrs i(n teh ogln eosnb aundor uryo eskne ro ta ryou seuhdsorl). It ssowh a er,lga iosdl nrggowi mssa htat mya erisa hte itsrepmoeu ni a rubutnss m/dpatrs'ntnoCae a.itnrgle )F tcrtPaosi -omciracna earr rof ngieb eon of, fi ton the ylon sieatmctat onbe cecanr htat is elpuyr ctl.eosbastoi

alexb  Great explanation, except that there was a question in NBME 22 in which the prostatic carcinoma was osteolytic. One of the commenters here looked it up and apparently it's like that 30% of the time or something. So I guess you would have to use the high output HF, normal Ca, high ALP, and mosaic pattern to "play odds" as Goljan would say. +1  
qball  At least they were nice enough to put Paget disease because I had no idea what osteitis deformans is. +1  
drzed  USMLE seems to be moving away from using eponymous names... so it's a good idea to see if there is a descriptive name for diseases. For example, they don't use the word "Wegener" anymore if you have noticed, since it turns out that guy was a nazi. So now they call it by what it is -- granulomatosis with polyangitis. +2  


submitted by momof21234(5),
unscramble the site ⋅ become a member ($35/month)

eht naptite ash staosbes hcwhi is cvetstriire euc(l swa rupalel )puDOLqlesaC si eesdrecad in thnroca-tiriac ctinoidosn atestitilir(n guln dz )cet nda larnmo on xcairca-tthore sitoncnoid aluucm(rs siusse)

usmlecharserssss  how FEV1/FVC is normal i cannot get that +2  
sammyj98  I think this is standard for restrictive lung diseases. In obstructive the airways collapse during expiration so it's hard to expire, but there's a long drawn out end to epiration as little by little it escapes, leading to a decreased FEV1/FVC. In restrictive pt's just aren't able to move and expand their lungs enough, so when they expire it's of a small volume, but there isn't any collapse involved. It's like a normal expiration just with a restricted volume, making the FEV1/FVC normal. +  
spow  @usmlecharserssss In restrictive lung diseases, the ratio is either normal or increased. +  
drzed  And the reason why FEV1/FVC is either normal or increased in restrictive lung disease is very simple: the FEV1 and FVC both decrease because you are restricting airflow, but the FVC will decrease MORE than the FEV1, and thus because the denominator is larger, the fraction either stays normal, or increases slightly Contrast this to obstructive lung disease where you have an obstruction to air FLOW, e.g. the FEV1 will decrease more than the FVC, leading to a low ratio by defition +2  
llamastep1  To add to what @drzed said, fibrosis causes radial traction on the airways therefore increasing FEV1/FVC. Theres a Uworld q on it +  


submitted by sugaplum(245),
unscramble the site ⋅ become a member ($35/month)

lpnhroomayppinealen si an paahl onsatgi ttha tlamitsuse htauerrl tmhoso emsclu aitornc.ontc - ofrm dtutaop,e oew,revh it oals asys ti is ton cmemnroeedd mtnrtaeet myaonre

ugalaxy  α1 stimulation (via α1 agonist) constricts the bladder sphincter thereby, preventing sudden bouts of micturition during coughing/sneezing (abdominal stress). +5  
sammyj98  I thought that B3 stimulation stopped urination +5  
adong  @sammyj98 B3 would facilitate bladder relaxation +  
hvancampen  @sammyj98- were you thinking of oxybutynin? (thats what I thought of!) According to FA, its used for urge incontinence not stress. +1  
drzed  Nah he/she's talking about Beta-3 receptors which are Gs coupled. Gs increases cAMP thus it would cause smooth muscle relaxation -> bladder relaxation! +1  
donttrustmyanswers  From Mayo: "There are no approved medications to specifically treat stress incontinence in the United States. The antidepressant duloxetine (Cymbalta) is used for the treatment of stress incontinence in Europe, however." +1  
nreid4  @hvancampen oxybutynin is an M3 muscarinic antagonist, not B3. +  
alienfever  I thought about B3 agonist as well and got this wrong. I think maybe B3 agonist can be used for bladder (URGENCY incontinence) where the main issue is detrusor over reactivity. In STRESS incontinence however the problem has nothing to do with detrusor, so we use α1 agonist to constrict the sphincter. +1  


unscramble the site ⋅ become a member ($35/month)

ngAosredn suace .anec eooTestrnset si a ebettr saerwn atnh tsordAlndnoeia b/c teh trTsntoeseoe is isaetodsca iwht ,eptybru dlasAndrinotoe is erom taosciased tiwh eth denlara sldnag.

meningitis  I chose Testosterone but I almost chose GnRH because it is surged when starting puberty and therefore increases everything downstream. +9  
temmy  When answering the question, i thought to myself that if GnRH is correct, LH will be too cos GnRH stimulates the Leydig cells via LH to release testosterone. That left testosterone as the best answer because it had the most direct effect. +10  
goaiable  GnRH and LH are increased in a pulsatile fashion at the onset of puberty, so idk if that constitutes as the "rapid increase" that this question is asking for. Tripped me up also. +  
tallerthanmymom  I originally eliminated testosterone and chose androstanediol because women can have Acne Vulgaris too, and Testosterone should not be rising to the same degree. Do I not understand how puberty works? +1  
drzed  Women can still make testosterone though; and androstAnediOL is not the same as androstEnediONE +3  


submitted by lfsuarez(135),
unscramble the site ⋅ become a member ($35/month)

sirFt atehr ondsu 1)(S si daetregen yb otw taher :evsval teh ltamir elavv and psuirctdi lva.ev lreaNy esuaonsmiltu gcsolni fo hetes asvevl lnyolmra gnseteaer a slenig 1S usd.on lnigSitpt fo eth 1S sodun si dhear nhew amtrli nda uridsicpt velvsa lcoes ta gillshyt dirnffeet ise,mt tihw asluuly eth trmial isncogl eoerbf cpudtsiri

yotsubato  Then why the fuck is it describing a mitral valve sound in the tricuspid area +19  
dr.xx  it's describing a splitting S1 — consisting of mitral and tricuspid valve closure — that is best heard at the tricuspid (left lower sternal border) and mitral (cardiac apex) listening posts. +21  
titanesxvi  tricky question, I though what sound it is in the left sternal border, so I chose tricuspid valve, but what they where asking was, what is the first component of the S1 sound +4  
titanesxvi  tricky question, I though what sound it is in the left sternal border, so I chose tricuspid valve, but what they where asking was, what is the first component of the S1 sound +1  
drzed  It shouldn't matter where you hear a split sound. For example, no matter where you auscultate on the heart, the second heart sound in a healthy individual will always be A2 then P2 (whether you are at the mitral listening post or the aortic listening post) The key is recognizing that the right sided valves in healthy individuals will always close later (e.g. the heart sounds are S1 S2, but more specifically M1 T1 A2 P2). The reason for this is simple: if you take a breath in, you will increase preload on the right side of the heart, and thus the greater volume will cause a delayed closure of the valve. This is physiologic splitting, and is better appreciated in the pulmonary and aortic valves because they are under greater pressure, and thus louder, but it can also be heard in the first heart sound. +8  
alexxxx30  yes agreed!! This question is mostly asking if you understand a few basic things regarding cardio physio. The left side of the heart is the higher pressure side so left sided valves will close first. The right side of the heart is the lower pressure side, which means right sided valves will open first. [Left closes first, Right opens first]...Secondly, it requires you to know what S1 and S2 sounds come from. S1 is the mitral/tricuspid valve closing and S2 is the Aortic/pulmonary valves closing. So really the question asks what is the first component of S1 (mitral or tricuspid closes first). And since we know that the left side will always close first, it must be mitral valve closure. Sorry if that was a long explanation. +8  
jesusisking  Thanks @alexxxx30, you the man! RIP Kobe +  


submitted by lfsuarez(135),
unscramble the site ⋅ become a member ($35/month)

He ptsrsnee thiw an nmabralo eonsiants of ish eltf adnh atht assrpde to thbo ihs eftl amr and c.fae A loiens of teh rtlcasetonp gursy oludw uesca hsti sa ti ti ilopbrssene ofr .osensatni

drzed  "you can tell because of the way it is" :) +7  


drzed  That made me want to vomit tbh; I forgot about NMRs until just now. I hated those things. +  


submitted by divya(49),

i don't think you need to think all that much. look at all the options and think of what happens when they increase. A, B, C, D and F all can cause interstitial edema. But increasing precapillary resistance definitely doesn't.

drzed  Increased lymphatic flow would not cause interstitial edema. +1  
123ojm  but it doesn't say "increase in," it just says "regulatory adjustments in." +1  


unscramble the site ⋅ become a member ($35/month)

Ptnieta sah aytmlocpyeih var,e sa dceneevid yb eiycss,yroortht al,snrgoytiscuo adn aadehches &apm; s.esidniz OPE si eedrdaesc edu to s.toiserhytrcoy sDedaerce ALP dwlou tciednai LMC, not VP.

btl_nyc  I thought this was CML. What am I missing that would say CML over PV? +3  
btl_nyc  Nvm, RBCs go down in CML, but everything goes up in PV. +9  
arcanumm  Tricked me. I knew right away that it was PV, but I thought PV would crowd out normal cell creation (e.g. decrease platelets). So apparently crowding out normal cells is just a quality of AML/CML? +1  
drzed  More AML. Remember Sattar always stresses that all the myeloproliferative disorders are expansions of ALL lineages, ESPECIALLY "xx" (depends on which one, for CML it'll be granulocytes, for PV it'll be RBCs etc). They're called MYELOproliferative because all the myeloid linages go up, but one will be increased more than the rest. In this case, it is the RBCs. +3  


submitted by smc213(118),
unscramble the site ⋅ become a member ($35/month)

oT be lymolcteep rca!el

hisT tepniat sha ysniitossC a erar toaslumao rescveesi msoaylols tsgaeor rderisod and mots nommoc acuse of aFninco oemsdynr ni nedrcli.h iCniytssos si sscytemi nad edsla to ieystnc casytlr oiptssde in lcels adn susiste guhrthootu eth yb.do

holgtuhA lsWnsio eeadiss nca lead to S,F the ylrtascs in eth rconaes sode nto etealorrc iwth nssoilW dsieas.e
orM e if:on icwt..o1i.en/:g1vcni./nsC/mb60/Mw4act8Pwh/m4p/rplhtls

highyieldboardswards  Thank you! You are a legend for figuring this out! +  
paulkarr  Appreciate you. +  
drzed  And even if it was Wilson disease, it would have the exact same consequence leading to Fanconi syndrome. +2  
abhishek021196  Fanconi syndrome Generalized reabsorption defect in PCT = Increased excretion of amino acids, glucose, HCO 3 – , and PO 4 3– , and all substances reabsorbed by the PCT May lead to metabolic acidosis (proximal RTA), hypophosphatemia, osteopenia Hereditary defects (eg, Wilson disease, tyrosinemia, glycogen storage disease), ischemia, multiple myeloma, nephrotoxins/drugs (eg, ifosfamide, cisplatin), lead poisoning. Polyuria, renal tubular acidosis type II, growth failure, electrolyte imbalances, hypophosphatemic rickets = Fanconi syndrome (multiple combined dysfunction of the proximal convoluted tubule). +1  


submitted by armymed88(48),
unscramble the site ⋅ become a member ($35/month)

Of tsehe pitsono ealaaiv,lb aScnhnw ecsll woldu eb hte olyn lcels sertnep ni eth S.NP er,ocAssytt miaircgol adn oolsig rea lal CSN lselc titel Sael eclsl are in hte eulcms adn seerv to dia ni lcmseu preira dna eerarentgoin

yb_26  Thats myosatellite cells. Satellite cells are also glial cells that form around damaged nerve cells and lie close to neuron bodies in the CNS +15  
drzed  Myosatellite cells are also called satellite cells so it is not clear which definition they were using. +1  


submitted by iviax94(7),
unscramble the site ⋅ become a member ($35/month)

ehrTe evha nbee a olupec fo estonqius oaubt hsit oiptc no the wnere sxema. evI’ eben wnsaegrin by taqnegiu ioldib ot ettoresstoen lveesl nad rtlnuanco tcesirnoe to tehahl fo lrutauecavs t(ehrsiasloreosc or .not) sI tsih crt?ocre

liverdietrying  When you’re thinking of libido, don’t just equate it to testosterone -- make sure you’re always considering depression! Depression following stroke is common, especially with residual physical disability, so this would decrease his libido. Nocturnal erections equate to “does it actually work?” not just the vasculature but the neural input as well. For example, during prostatectomy damage to the pelvic plexus (nerves) can lead to impotence. There’s nothing to suggest that he has vascular or neurologic erectile dysfunction here, which is why his nocturnal erections are intact. +20  
_pusheen_  @liverdietrying Was it premature to assume he has trouble with erections because of neural damage from the stroke? I put low libido, low nocturnal erections. Is it because the stroke resulted in hemiparesis and not autonomic dysfunction or something like that? +5  
liverdietrying  @pusheen Correct, you won’t classically get impotence after a hemiplegic stroke. His inability to achieve an erection is much more likely to be 2/2 psychosocial effects than organic disease. If this vignette instead said that this had gotten a prostatectomy with resulting damage to the pelvic nerves that allow for erection, then it’d be a more safe choice to put no nocturnal erections. +4  
fast44  Is there a video or somewhere that explains these sexual dysfunctions? This seems to be a topic that keeps repeating on the new exams. +2  
forerofore  well, i though that because he had a stroke he would be likely to have atherosclerosis, which would keep libido high and reduce nocturnal erections, i kinda ignored the whole "he´s depressed" part of the vignette despite understanding the mechanism well. but from a clinical depression point of view, if his arteries are intact, and he is depressed, then libido would be low, and erections present at night. +4  
pg32  I can't remember exactly but I swear the question on NBME 21 the guy's wife had died as well...? Or they had gotten divorced? Either way, he had some psychological baggage as well, but his libido was still normal, and the explanation was that his testosterone would be fine regardless of his depressed mood. So I went with that logic here and missed this question. I don't understand how I am supposed to gauge someone's libido based on vague hints at their mood, especially when in one exam mood does not decrease libido and in the other it does. +  
drzed  @pg32 bro spoilers +2  


submitted by mguan1993(8),
unscramble the site ⋅ become a member ($35/month)

can nemoose inlxpae yhw het searwn is nto naerlda ad?lng I elfe ike fi dareanl gldna aws eht ieuss eterh ludwo lsoa eb ddcseerea osriocatnentnc fo F,SH H,L dan gneorset thgir?

mguan1993  ^nvm had a brain fart and go adrenal gland mixed up with anterior pituitary lmao +4  
nor16  ovaries are #1 estrogen producer no estrogen no lubricant = dyspareunia no estrogen and no fsh/lh --> there must be a "higher" problem, up there in the brain +3  
pg32  I agree that hypothalamus is the most logical answer, but if she had overactivation of the adrenal gland (cortisol secreting tumor), that could also inhibit GnRH and cause these same symptoms. +  
drzed  @pg32 the physical examination would not be normal with either a ACTH or cortisol secreting tumor. +  


submitted by armymed88(48),
unscramble the site ⋅ become a member ($35/month)

noDw eyrsdonm n2d stmererit sreecn ulls(uay ronuad -8k)ws611 swhso drdceesea ,FPA oeitsrl adn cseedinra ChG dan ihnbnii A.

fO rymiost 21,/1381/ wnoD rySnmedo is the only to have an deeevlet GCh

makinallkindzofgainz  "Down Syndrome has high HI (hCg and inhibin)" the relationship between the words down/high really stuck for me +1  
drzed  An easy way to remember the other aneuploides is that the "lower" ones (e.g. lower than 21 = 13,18) have "lower" values (e.g. LOW hCg and LOW inhibin) +2  


submitted by pppro(22),
unscramble the site ⋅ become a member ($35/month)

ePitant ahs HP.B veGi pahal eno tagoaistnn to ecdrue tmhoso emcusl rcctoinoatn and vleeire ftduylfiic giiatun.rn

d_holles  lol i thought it was some kind of urinary retention problem and put H. +12  
sbryant6  How is H wrong? Oxybutinin or tolterodine treat urinary incontinence by blocking M3 muscarinic acetylcholine receptors --> urinary retention. We're just supposed to assume they are talking about BPH here because he is old? +  
jaxx  I agree. I picked "H" for that same logic. Does anyone know where we should have come to the conclusion that this was BPH? +  
forerofore  they are telling you he's having "difficulty urinating", one of the clinical criteria for BPH is reduced urinary flow rate. this is not incontinence because they are not telling you he leaks at all, just that he pees "a lot" +11  
drzed  Even if he was urinating too much, anticholinergics are contraindicated in the elderly (Beers criteria) +2  
pathogen7  @drzed tI mean techinically alpha-1 blockers are on the Criteria too ... +1  


submitted by pparalpha(78),
unscramble the site ⋅ become a member ($35/month)

Cna eeomsno alesep xenpali hyw it lowdu otn eb gnoylgce ltpei?eond I uhogtth the sioetnqu swa ikagtnl btauo het grWabur neeoh..nonm.p so hwy otn owrnaekbd of gncegyol to c?ugleos

I uesgs ti luwdo nto pnelxia teh aem?ed

hello  Glygocen stores are depleted within 24h. This person has signs and symptoms of longterm nutritional deficiences. +2  
raffff  it would not explain the edema, yes +  
drzed  Also the warburg phenomenon has to do with cancers preferentially taking up glucose; there is no indication that he has cancer. +  
haydenelise  The first sentence says that he has lung cancer. +1  


submitted by nwinkelmann(265),
unscramble the site ⋅ become a member ($35/month)

iThs teailcr sxaielnp eht ooylhtpspahygoi well: i/skK.gsoticop.hh/w18./w4b43v:l/n/.0tBnwNobnm.

heT htgri tcenrlive si yrlapirmi liuesdpp yb the RAC hhiwc sloa sspilpue het SA node nda VA onde (09% fo raehst bcuease ehyt ear gihtr naimnotd,) diaelgn to ossl fo ricltotaytnic of eth hrtig dse,i adn tuhs idflu iluupdb sauingc eeavtdel ecntrla ueovns esrseu.pr aedevtlE rsurspese ni eth erliv nda lotpar tesmys dulow dael to aphaeltemgoy dan eref fdlui comuluctniaa ni eth rtenmeuopi.

henoch280  Hellppp. pls why is it not decreased capillary oncotic pressure? +  
whoissaad  @ henoch280 Because there is no change in the levels of protein in the blood. +7  
drzed  theoretically you could develop liver failure from the increase in central venous pressure (e.g. cardiac cirrhosis) and THEN you would develop a decrease in oncotic pressure. +1  


unscramble the site ⋅ become a member ($35/month)

tniLifg deha iwleh n:rope 1 m hlSitncoao lsime: 2 o:hCgnn oosimt 2 otnmsh

pg32  Where do you guys learn that cooing starts at 2 months? It isn't in first aid or boards and beyond so this was an annoying question for me +1  
drschmoctor  @pg32 From being a parent! Otherwise little chance I'd remember all these milestones. +4  
drzed  I'll get right on that @drshmoctor :). If only I could have a kid to memorize all these damn developmental milestones. That would make life easier haha. +5  
snripper  Yeah, I don't see cooing anywhere. +  
teepot123  thankfully a lot of my friends on insta keep posting pics/vids of their babies reaching milestones so im well updated lol +1  
pjpeleven  Mnemonic: "Coo at Two" +  


why not sarcoidosis? 1.rheumatoid arthritis like symptoms 2.uveitis 3.kidneys ...only serositis is a bit controversial

drzed  Need some pulmonary symptoms to make sarcoid convincing. I know in real life people can present with primary neurosarcoid or something crazy but on exams, it'll be classic presentation. No granulomas, hilar lympadenopathy, or interstitial lung disease = probably not sarcoid +1  
peridot  Just curious but if it had been sarcoidosis, would "systemic release of IL-1 and TNF" be an accurate description for the pathogenesis? +  


submitted by welpdedelp(203),
unscramble the site ⋅ become a member ($35/month)

oS I ithnk taht esuis of swirt inesetnox ondr/a fegirn odrp uodlw be erom aalrid erevn. rHv,eewo eerht swa moer arompilx swkseaen, os ti odulw eb C.7

7"8- aly ehtm r"ihst,atg hte pt 'udtocln l"ay hemt gtashtir" os ti odwul be C7 root

welpdedelp  *As an addition, median nerve involvement would have leaned more toward C8 than C7. +1  
meningitis  Do you have anymore useful mnemonics for brachial plexus? +  
henoch280  FA pg 494 for mnemonics +  
winelover777  Doesn't look like there are many in FA 2019. S1/S2 - Buckle my shoe. L3/L4 - Shut the door. C5/C6 - Pick up sticks. +  
drzed  S2-S4 keeps the penis off the floor :) (cremaster reflex) +  
peridot  What's crazy @drzed is that in FA 2019 it says L1-L2 ("testicles move") on p.498 so I wonder if that changed +  


submitted by rainlad(20),

How do you rule out Protein C deficiency in this case? doesn't that also increase risk of thrombosis and miscarriage?

suckitnbme  @rainlad Protein C deficiency doesn't cause elevated PT and aPTT. I believe they're both normal and assays for the disease measure protein C activity. +4  
drzed  Protein C is an anti-coagulant, so if you lack factor C, then you have MORE clotting factors. This means that the PT and PTT would not be prolonged. +3  


submitted by seagull(1182),
unscramble the site ⋅ become a member ($35/month)

iTsH eqintsou is utsj ircitlca khingint. heT aadnsrle are tarllybalie nad emsacylilmtyr ls.lma All tehro newras hcciseo aer ton lkeily to eb even lyiel.lratba ernCca won't yellaqu rasdep ni rpfecet yyrmstme nro sinofuitec usseca ilewh mtaninaigni the ldaaren t.erathucriec

slim23shady  Will TB be the answer if they'd mentioned the patient from developing world? +  
step1soon  Autoimmune adrenalitis aka addisons disease → adrenals atrophy common cause: 1. developing world: TB 2. Western world:autoimmunne FA 2019 page 334 +12  
drschmoctor  FA 2020 p 349. +  
drzed  I think the cancer reference (C) was with respect to an ACTH secreting tumor, which would symmetrically and bilaterally HYPERTROPHY the adrenals +1  
drzed  ^Just kidding, it says metastatic. My bad! +1  


submitted by seagull(1182),
unscramble the site ⋅ become a member ($35/month)

iTHs onsuieqt is ustj iaticclr .kthnniig ehT rnladase rae tayrlllaeib nad tclasimmeylry .mllsa llA toher rnwase cshioce are otn likyle ot be eevn laye.lairtbl reCanc wt'no uelyqal aerpsd in fpecetr tmrsemyy onr onuscefiti uessac hweli nimnangiait hte daernla crcreueah.tti

slim23shady  Will TB be the answer if they'd mentioned the patient from developing world? +  
step1soon  Autoimmune adrenalitis aka addisons disease → adrenals atrophy common cause: 1. developing world: TB 2. Western world:autoimmunne FA 2019 page 334 +12  
drschmoctor  FA 2020 p 349. +  
drzed  I think the cancer reference (C) was with respect to an ACTH secreting tumor, which would symmetrically and bilaterally HYPERTROPHY the adrenals +1  
drzed  ^Just kidding, it says metastatic. My bad! +1  


submitted by taediggity(28),

So this patient is essentially in hypovolemic shock because he's hemorrhaging blood from the aorta.

A) You'd have increased ADH to conserve volume B) You'd have increased BUN:Cr ratio b/c due to a decrease in blood flow C) Increased TPR naturally due to less pressure on barorecptors D) Decreased Capillary hydrostatic pressure b/c they have decreased volume E) Decreased Carotid sinus firing rate b/c less pressure F) The Answer: RAAS is activated -

drzed  (B) You get an increased BUN:Cr ratio because increased urea absorption at the proximal tubule (conservation of water), but you lose the same amount of Cr since none of it is reabsorbed; thus the ratio increases. +5  
kevin  I may be wrong but I think more of the urea (BUN) would be absorbed in medullary collecting duct in this situation due to ADH; think I saw a question on this in uworld, could pop up +  


submitted by yotsubato(841),
unscramble the site ⋅ become a member ($35/month)

htaW do uoy seu to tetar petcHai caeapo?tylhpEnh aeo.ucLstl thWa sode ahtt d,o it safciieid H3N ni teh IG ttacr onit NH4+ nda permoost loss of eht sonorignuet udtpcrso thta esuca chpea.aoylenhtp hTsi is owh oyu bremmeer htsi rc.sespo

carmustine  FA 2019 pg 385 "Triggers --> increased NH3 production & absorption (due to GI bleed, constipation, infection)." +4  
drzed  To add, you can also use rifaximin which will act as a antibiotic decreasing the production of NH3 from gut flora. Same concept. +2  


Orlistat works by inhibiting gastric and pancreatic lipases, the enzymes that break down triglycerides in the intestine.

Don't break things down in the intestines----> osmotic diarrhea

Apparently people use it to lose weight. Who knew. Not me

drzed  I believe it is the only FDA approved weight loss drug and has actually shown efficacy in diabetic patients. +  


Wouldn't telling the patient about the referral do more harm than good?

  1. Pt considers it a bribe and leaves
  2. Ruins study due to placbo effects
  3. Puts doc/hospital at risk for potential legal hassle.

I guess maybe I read it as a study when it really is just a referral but its not that much of a leap to think that this "experimental"" treatment is part of a study

drzed  I think this more of an ethical question (not a legal, or study design problem). Ethically, between the choices of being transparent with your patient, or not, the choice would be to disclose. Disclosing and offering to share would come across as a bribe, so that is less favorable than simply being transparent and putting the patient in charge of their decision. +  


I had no clue where the damage was either, but with that said:

You feel the grass with your feet ––> gracilus

And the arrangement along the spinal cord is similar to the sensory/motor homunculus of the brain where the feet are on the inside/medial and the arms are on the outside/lateral.

drzed  Only in the dorsal columns; this is reversed if the decussation happens within the spinal cord (e.g. the spinothalamic tract has a somatotropic distribution where the proximal extremities are medial) +  


submitted by hyperfukus(69),
unscramble the site ⋅ become a member ($35/month)

laso in esac yeht ask ereerbmm tath eesth aer 'UAs(hevPaF oblued sd)nbo dna teyh are tbetre tanh rSaettaud (nsfaot bdeuol aodr+bsscb)n

drzed  PUFA = poly-unsaturated fatty acids in case anyone didn't know the acronym. +4  


submitted by suckitnbme(132),

I was stuck between mitral and aortic and went with aortic because the L ventricle looks enlarged, possibly hinting that the patient had aortic stenosis.

drzed  I went with aortic because it looks like the valve has three cusps, while the mitral valve should only have two. Incorrect logic? +2  


submitted by fatboyslim(26),

(From UW 11852) Some medications including opioids, radiocontrast dyes, and some antibiotics (e.g. vancomycin) can induce and IgE-INDEPENDENT mast cell degranulation by activation of protein kinase A and PI3 kinase, which results in release of histamine, bradykinin, and other chemotactic factors -> diffuse itching, pain, bronchospasm, and localized swee=lling (urticaria).

almondbreeze  just to add : more agents causing such reaction - beta-lactams, sulfonamide, aminoglycoside +  
drzed  Are those IgE dependent, or just allergic reactions (asking because the sketchy for beta-lactam penicillins mention acute interstitial nephritis as an allergic reaction)? +  


submitted by soph(48),
unscramble the site ⋅ become a member ($35/month)

lla hte herot iotonsp pt ulwdo hvae usutr,e ervis.ao senurrt tyeh oudtlnw lkoo arlonm and hyet loduw evha arpotihc sriveao.

turtlepenlight  This makes sense, but I was thrown off by the "normal-appearing" b/c wouldn't AIS pts not have pubic hair? +  
drzed  They just say it's a normal appearing 17 year old girl; not that the external genitalia are normal appearing. +1  
teepot123  fa 19 pg 625 +  


submitted by chandlerbas(86),

bronchus obstruction traps oxygen in alveoli no nitrogen able to enter (atmospheric air entering body (78% nitrogen and 21% oxygen, nitrogen is so important nitrogen bc it is a poorly absorbed gas and thus is in charged of keeping alveoli inflated) oxygen in the alveoli is absorbed into the blood reducing the volume of the alveoli alveolar collapse absorption atelectasis

bethune  Why is pulmonary hypertension incorrect? +  
samsam3711  PEEP allows the alveoli to remain slightly open with exhalation to prevent atelectasis. Pulmonary Hypertension is going to be related to vascular changes (instead you might see shunting of blood in areas of poor ventilation) +1  
drzed  Pulmonary HTN occurs because of pulmonary vessel vasoconstriction. This can occur d/t multiple factors, but one of the most important ones is hypoxic vasoconstriction that the lungs will undergo (for example, at altitude). In the setting of PEEP, you are ventilating the lungs perfectly; this allows for the pulmonary vessels to open up and not undergo vasoconstriction. Thus, you prevent pulmonary hypertension via hypoxia. +  
peridot  @drzed by your logic, you're arguing for D to be the answer but the correct answer was about preventing atelectasis +  
medstudent  The question is what’s key. The purpose of PEEP is to keep the airway open. The purpose of ventilation with supplemental oxygen can help with preventing pulm HTN. Could be wrong, but that’s what makes sense to me. +  


submitted by uslme123(52),
unscramble the site ⋅ become a member ($35/month)

vyer ptusid nu.ostqie Teh suivr was deinhla -- abst anhg spiude hewn yteh esple nad loor.d oS it esasrdp ot eth nrbai ycdlteri mfor het cootlayrf ysstem aiv erdtgraero saontptrr ouhthgr vesner.

niboonsh  yea, aeresol transmission via bat poop in caves +  
len49  How do you know the virus was inhaled? Doesn't mention it. Moreover, non-bite/scratch transmission is extremely rare. +  
makinallkindzofgainz  You get rabies by being bitten, not by inhaling it +  
drzed  She was probably bitten by a bat; many times the bite is not recognized ('unapparent bites'), and thus the CDC recommends that even if you think you have been bitten by a bat (or that you COULD have been bitten), you should go and get active/passive immunization immediately. +  
mangotango  Sketchy (and Zanki) says you can get rabies via animal bites OR aerosol transmission. In the U.S. it's most commonly through bats. It could also be through skunks (Western U.S.) or foxes/raccoons (Eastern U.S.). I remember this by thinking about how skunks smell so bad! +  


submitted by sympathetikey(1028),
unscramble the site ⋅ become a member ($35/month)

ehT leohw ck"ips at hte ls.ieosansc..eu oems iglnde,"eb dema em itnhk ssaoi.rPis hudoSl ehav noeg hwit iictnAc isaKteosr bades on eth pntteai srthoyi s(olt of nus ruxpee)so.

ccintAi aeKsitros

metagrnPlnia onlseis decsau yb nus uoserpex. ,Sallm ougr,h eartsoyhuetm ro oiwhbrsn upelsap elsqrpua.o iRsk of susoquma lelc rniacmcoa is apnrloproito ot edreeg of iepllatieh isl.adsayp

thisisfine   Same - the bleeding thing pushed me over to psoriasis as well. Oops. +5  
temmy  the distribution of the other lesions, forearm, face, ear, scalp..is not characteristic for psoriasis. +6  
hyperfukus  the scalp and ear are actually very common for psoriasis IRL the key is more of the fact that its in areas with UV exposure...actually UV Therapy is found to be helpful in treating some pts w/Psoriasis. Lastly the appearance and lots of things bleed if they were trying to go for auspitz sign it would have tiny dots of bright red blood with slightly touching it +4  
hyperfukus  oh last thing psoriasis itches! they said no itching +4  
drzed  Those locations may be common IRL, but on step 1, if they want you to think psoriasis, the illness script is going to be someone in their 30s (autoimmune age) with symmetric cutaneous plaques that have a silvery scale on the extensor surfaces. In this case, the age and non-classic description (location, type of lesion) made me steer away from psoriasis. +1  


submitted by readit(12),

Why is is not pseudo aneurysm?

"Aortic pseudoaneurysms typically occur as a result of trauma +/- intervention, a considered subset of traumatic aortic injury in the majority of cases. They can be acute or chronic."

https://radiopaedia.org/articles/aortic-pseudoaneurysm?lang=us

readit  *same goes for saccular aneurysm, which also is usually 2/2 trauma +  
samsam3711  In the question stem there is no indication of trauma so it would be hard to just assume that +  
almondbreeze  see my comment above for marfan syndrome. might help +  
drzed  This is because a pseudoaneurysm is between the media and adventitia, and is incited by trauma; a dissection is between the intima and the media and is a result of hypertension causing an intimal tear. The history points toward cocaine -> hypertension rather than penetrating trauma. +  


submitted by h0odtime(45),
  • R Lower quadrantanopia = C/L Parietal Lesion/MCA via Dorsal optic radiation.

  • If top quarter was gone, then it would be C/L temporal lesion via meyer loop.

drzed  the dorsal optic radiation is also known as "baum's loop" +  
icedcoffeeislyfe  FA2020 pg 542 +  


submitted by hayayah(1000),
unscramble the site ⋅ become a member ($35/month)

yaredcSon tmhopearyrsahypirid lysuua(l d/t ocinchr anerl r)iuflea.

abL gnidnfis clneuid ↑ HPT nrespo(es ot olw mluc),cai ↓ userm cuilcam leanr( le,)rafiu ↑ rusme ashtopphe rneal( )ie,alrfu nda ↑ kllinaea aapheotpshs PTH( aitactngiv eoB.ostsaslt)

haliburton  also remember that in renal failure, 1-alpha-hydroxylase activity is down, so there will be less activation of 25-hydroxycholecalciferol to 1,25-hydroxycholecalciferol, which is a key mechanism causing hypocalcemia. +1  
cr  why not increased 25-hydroxycholecalciferol?, with the same logic haliburton explain +  
nala_ula  Increased phosphate, since the kidneys aren't working well, leads to the release of fibroblast growth factor 23 from bone, which decreases calcitriol production and decreased calcium absorption. The increase in phosphate and the decrease in calcium lead to secondary hyperparathyroidism. +1  
privatejoker  Probably a dumb question but how do we definitively know that the ALP is elevated if they give us no reference range in the lab values or Q stem? Everything stated above definitely makes sense from a physiological standpoint, I was just curious. +1  
fatboyslim  @cr the question asked "the patient's BONE PAIN is most likely caused by which of the following?" Increased levels of 25-hydroxycholecalciferol might exist in that patient, but it wouldn't cause bone pain. PTH causes bone pain because of bone resorption +1  
suckitnbme  @privatejoker ALP is included in the standard lab values +  
makinallkindzofgainz  @privatejoker ALP is listed under "Phosphatase (alkaline), serum" in the lab values +1  
pg32  Why does AlkPhos increase in renal osteodystrophy? The PTH would be trying to stimulate bone resorption (increase osteoCLAST activity), not bone formation (osteoBLAST activity). +  
drzed  @pg32 the only way to stimulate an osteoclast in this case (e.g. via PTH) is by stimulating osteoblasts first (thru RANKL/RANK interaction), thus ALP increases. +1  


Diarrhea causes loss of water, Na and Bicarb. Remember that diarrhea is a cause of non anion gap metabolic acidosis because the loss of bicarbonate is compensated by increasing Chloride reabsorption. So she can have hyperchloremia or hyponatremia due to intake of only free water for 24 hours. But she has SEIZURES so hyponatremia is most likely

drzed  I think the initial hyperchloremia would be quickly diluted out by the large consumption of water, so those two competing processes would likely neutralize the chlorine level, or even make the child hypochloremic. +  


submitted by hayayah(1000),
unscramble the site ⋅ become a member ($35/month)

trcShte ro nodiailt of het xricve adn inavga aer togrns mtlisiu rof cnyoxtoi ,necriteos ddmateie yb lnuear thaapswy lldace het rsgueFno flx.eer

liceAtr: /uptrti.hx/csen-emtepe/.fdiweoroneintss/i:eerclfscwccwn/rescgcuoo

readit  This is also why ob-gyn's will massage the uterus (which is part of the birth canal) after delivery. It's to get the body to release oxytocin and cause the uterus to contract (to prevent postpartum hemorrhage) +4  
jennybones  Please why is estrogen not the answer, I thought estrogen would upregulate oxytocin receptors and increase oxytocin secretion? +  
drzed  During pregnancy, oxytocin RECEPTORS are upregulated (by estrogen) as parturition approaches, but the ferugson reflex creates a positive feedback loop where the dilation of the cervix further releases more oxytocin. The inciting event that starts this feedback loop is the dilation of the cervix leading to a direct release of oxytocin, not the presence of more oxytocin receptors. +3  
bbr  To add, the positive feedback loop here is pretty elegant. Basically, it seems like the cervix doesnt want anything in it. When its stretched --> oxytocin --> contract uterus --> push baby --> more stretch at cervix---> more oxytocin (and forward). The positive feedback loop aspect is that oxytocin-based contractions cause more dilation of the cervix (as the baby moves into it!). +  


submitted by hayayah(1000),
unscramble the site ⋅ become a member ($35/month)

eNotc,i the semt asys oercsrop"rs ni het ksni"

D3 (hfclocelrecl)ioa from urpeexos of isnk utamrst( bla)aes ot nsu, itoiengsn of si,hf ki,lm t.apsnl

D2 cg(acrflieloer)o mofr nisegtnio fo lnpt,sa gfun,i etya.ss

ohBt rtonevdec to 5O2H- D3 eartso(g rmo)f in lrive adn to the etciva fomr 2),-5H2(O1 D3 otic(lraic)l in .dnekiy

sympathetikey  C is the 3rd letter in the alphabet. Hence, D3 = Cholecalciferol +4  
karljeon  Thanks for the explanation. The question stem made it sound like "what future step will be decreased?" Actual question: "Decreased production of which... is most LIKELY TO OCCUR in this patient?" Maybe NBME needs a grammar Nazi working for them. +6  
bharatpillai  question says "decreased production of which of the following precursors in skin is most likely to occur in this patient? the answer has to be 7-dehydrocholecalciferol! +3  
bharatpillai  7 dehydrocholesterol +2  
brbwhat  Yeah i did the same, but then realised acc to uw flowchart 7dehydrochole.. is converted to cholecalciferol in presence of uv rays. So the decreased precursor would be cholecalciferol since we already have 7 dehydrocholecalciferol not being converted by uvrays Tho the uw chart sites both ergo and chole as dietary sources. +2  
drzed  Wouldn't 7-dehydrocholesterol build up in the skin? Since UV rays convert 7-dehydrocholesterol into cholecalciferol, if you are lacking the conversion, the reactant (7-dehydrocholesterol) should accumulate. +  
brbwhat  They’re asking decreased production of which of the following precursor would occur? 7 dehydrocholestrol builds up, but decreased production of cholecalciferol takes place, which is a precursor in the pathway for vitamin d formation +1  


submitted by mbourne(64),

I think that if they had something like "statin therapy" as an answer choice, we would have an argument for that as it would decrease mortality by helping prevent ANOTHER heart attack. However, I think that anti-depressant therapy will do a LOT to prevent suicide, while omega-3 fatty acids (healthy as they are) wouldn't do AS MUCH to prevent a heart attack.

The question is basically asking, "You can only prescribe one of these to keep this dude alive as long as possible. Which one will have the best chance at accomplishing that?"

Therefore, the answer should be anti-depressant therapy.

bharatpillai  why antidepressant therapy though? there are not enough features given to suggest MDD. He's 56 years old, not an elderly single male so not at the highest "classical" population at risk of suicide? the question is so ambiguous... Given MI, wouldn't chronic alcoholic intake predispose him to dilated cardiomyopathy? +  
neovanilla  I don't believe it's that he has MDD by the clinical definition. It's more that his QoL has probably changed drastically since the MI and MIs are strongly associated with decreased outlook on life, especially considering how common it is to get a second MI soon after the first. I don't know the stats on suicide post-MI, but helping the patient's depression to make him more pro-active to help himself prevent another MI would be better than "a diet high in omega 3 FAs" (at least, this was my justification, as mbourne was saying) +  
drzed  First sentence of the stem: he has a 6-week history (e.g. >2 weeks) of depression (1), difficulty sleeping (2), fatigue (3), decreased appetite (4), and poor memory/concentration (5) For a diagnosis of MDD, you need a 2 week history of 5 of the SIGECAPS symptoms which he meets (he is only missing suicidal ideation and interest in activities). Thus he meets the diagnostic criteria for a major depressive episode, which means that treatment is indicated with an SSRI. +1  


submitted by strugglebus(153),
unscramble the site ⋅ become a member ($35/month)

otsM fo the stp alesuv wree n.lmora nikngrDi tawn's toauueg,ors LDL saw i,mld IMB sha .inef He ddi hvae THN thoghu. The eisgbtg ikrs atsforc are eth fcta that he adh fusefder na MI nad taretsd unrsigfef evesre sepnrdisoe t(eiwhg a/sl.xint)ysoe ,usTh eh is oerm at riks orf iuidsce.

sohaib111  Won't having an MI be a very big risk factor for another one ? And also if they wanted this answer (the anti-depressant), why would they just add that his LDL is inreasing in the last sentence... +12  
dbg  bc they're SOBs and DOBs +9  
doodimoodi  Yeah, recommended LDL in people with previous heart problem is < 100 jeez +  
asingh  It is because of the timeframe of mortality is 2 yrs, everything else will affect later +5  
benny  mdd increase MI +  
benny  Type 2 diabetes and major depressive disorder (MDD) are independent contributors to cardiovascular disease and to an increased risk of myocardial infarction (MI). +  
drzed  None of the cardiovascular options would improve mortality (statins, ACEi, BB, spironolactone are the ones that have proven mortality benefit). So if they had put one of those, I think I would have chosen that, but given that the rest don't change mortality at all, I went with the antidepressants. +2  
ihatetesting  My thinking was that since he had an MI, a beta blocker would improve mortality, and propranolol is also used as an anxiolytic. +2  


submitted by monoloco(125),
unscramble the site ⋅ become a member ($35/month)

Epdeaasnuctl ssranmoig rnu nmtpaar in npsettia who haev no lpsee,n rhwteeh hayiplclsy or .lnanyilofuct alRle(c hte awer-ayrdi fo aleeqasu lsieck lecl ntapeist piexneerce hsaknt ot ietrh lcnafnuito emuysetoacnpl).ot

sympathetikey  Agreed -- went with E. Coli like a dingus, just because I didn't associate DIC with S. Pneumo. Thought it was too easy. +  
chillqd  Isn't E. Coli also an encapsulated organism? What makes Strep pneumo more likely in this question just because its the more common cause? +16  
studentdo  Pseudomonas aeruginosa is encapsulated as well. I think the right answer has to do with DIC but why? +1  
mgoyo89  The only reason i found was S. pneumo is more common, I went with Pseudomonas because of the "overwhelming sepsis" :( +  
kard  Everyone is correct about the Encapsulated microbes, but this is one of those of "MOST LIKELY", and by far the most likely is S.Pneumo>>H.infl>N.Mening. (omitting that patients with history of splenectomy must be vaccinated. +1  
djinn  Gram negative are more common in DIC my friends +1  
drzed  Correct me if I am wrong, but I am pretty sure that E. coli is NOT a common cause of pneumonia because it must be aspirated to enter the lung. Thus, only patients with aspiration risk (e.g. stroke, neurogenic conditions) would be at a chance of getting E. coli pneumonia. +  


submitted by yotsubato(841),
unscramble the site ⋅ become a member ($35/month)

iThs oqnituse si st.lublih eTh omnaw lwuod stmo lykeil be caevcditan to Serpt unmo,ep ecyselapil fi hse hda a oecsnymtl.ep

E iclo si sola an ecdtnleusaap curmiaebt htat scseau puiea,onnm os tath si reom kylile M.OI

sugaplum  I agree with you, only possible logic for their answer: the qualifier asplenic makes the "ShIN" pathogens more likely, even though Ecoli can cause gram negative sepsis and DIC. FA 2019 pg 127 Also it says s pneumo causes sepsis specifically in asplenic patients Pg 136 +1  
lmfaoayeitslit  To be honest, the only reason I got this right (because I really was thinking E.Coli as well), is that I ended up remembering the MOPS part of the Sketchy, and I couldn't remember if he said that it was the number 1 cause of all of them or not, and ended up clicking it. It's pretty shitty they don't offer explanations for these. +  
merpaperple  I thought this too but it seems like Strep pneumo is just more specifically associated with infection in asplenic/sickle cell patients than E. Coli is. Just one of those classic associations. There's a sickle in the Sketchy Strep pneumo sketch, vs. no sickle in the E.Coli sketch. +  
drzed  E. coli causes pneumonia by aspiration, for which this patient had no risk factors. For USMLE, if they don't say the patient is vaccinated, you can assume they are NOT. Just because she has a history of splenectomy following trauma does NOT mean she had to been vaccinated--don't fill in the history for the patient, only use the information they give you. +  
vivijujubebe  also DIC more often seen with G- bacteria right???? That's why I chose E.coli instead of S.pneumonia +  


submitted by sugaplum(245),
unscramble the site ⋅ become a member ($35/month)

eeshT lwsyaa eitpprd em :pu
+ io=aiyspldP pnsesdor to terwa ndir,atepivo wlo ersum aN
+ C=aletnr ndpeossr to ospessir,nav gihh remus aN
eo ep+crhNnig = onsrpdes ot gon,hnit lamron msure aN

lynn  I think serum Na+ only depends on the patient's access to water. FA19 pg 344 says serum osm is high in both and doesn't mention Na specifically. Spent a while double checking for DI, but low serum Na for polydipsia is definitely correct. +  
drzed  In general, SIADH or polydipsia will cause HYPOnatremia, and DI (central or nephrogenic) will cause HYPERnatremia, but in the latter--as you stated--water access change the serum Na. +  


submitted by monoloco(125),
unscramble the site ⋅ become a member ($35/month)

hiTs si a aispophayl fo het plepteuleoarionr erabe.mmn Teh tugs hnertaie iotn teh hrxt,ao uuaysll on teh tlef ,edis and telurs in lpayispaoh of hte sglun a(usceeb 'heetyr ylrbiroh sdcops.)mere

johnthurtjr  Usually on the left because the liver prevents herniation through the right hemidiaphragm +7  
asdfghjkl  aka congenital diaphragmatic hernia +2  
pg32  What's weird to me is that if you usually see air in the intestines on x-ray when they are in the abdomen, why is there no air in the thorax in CDH? The intestines should still have air in them, right? Also, what is filling the abdomen that causes it to appear grayed-out in CDH? +  
drzed  @pg32 You can actually see a gastric bubble if you squint hard enough. Look at where the NG tube is placed; there is a radiolucency to the patient's right of the NG tube which is most likely the stomach. It probably then is radioopaque distally due to the pyloric sphincter, and air having a tendency to rise. +2  
bbr  Any idea what "absence of bowel gas in the abdomen" is referring to? +  
rkdang  my interpretation was absence of bowel gas in abdomen --> the bowel is not in the abdomen --> incomplete formation of pleuroperitoneal membrane bowel gas is a normal finding that you often see on x rays of the abdomen in a normal patient +1  
seba0039  @rkdang is it also abnormal that you cannot see any air in the lungs? This threw me off when I was trying to read the radiograph. +