share email twitter ⋅ join discord whatsapp(2ck)
Free 120  NBME 24  NBME 23  NBME 22  NBME 21  NBME 20  NBME 19  NBME 18  NBME 17  NBME 16  NBME 15  NBME 13 
introducing : the “predict me” score predictor NEW!
Welcome to mousie’s page.
Contributor score: 218


Comments ...

 +4  (nbme18#3)
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

hte tlplauise mass agve it away ofr em tbu oinkglo ackb htis tpinate sah all teh srik cfoarst fro AA - eaml seomkr wtih TNH + dpee chtse ianp adn iuplalest smsa = AA lla day ngol

mcdumbass  Adding on, hoarseness + difficulty swallowing means something is pushing on the recurrent laryngeal. Murmur in the second right intercostal space = AR, AS, or Pulm regurg --> AR associated with thoracic aortic aneurysm, or at minimum, you can infer it's a cardiac etiology +4
chadgas  The dyspnea, dysphagia, stridor, and cough are pretty indicative of a mediastinal mass. So expansion of the aorta can cause compression of the esophagus, trachea, recurrent laryngeal nerve, etc. depending on the severity of it. +

 +4  (nbme18#31)
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

dRae .a..ha..o.tpm capther 1 p 5 no "lelc ted"ha Lfuvaeiqecit csesorin rocusc ni bairn rnafitc ( ptlritooyce msenzey rmfo gilamrocil clels uqyfiil the iabr)n ;m&ap cesbssA ytorcipto(el yensmez ormf hntrleisuop yiflqui siteus n[i isht cesa ponyamlru )ay]percnham apm&; parittacnise mse(a ithgn)

mumenrider4ever  Also talked about under liquefactive necrosis on pg. 209 FA 2020 +3
lokotriene  UW: 302 & 9989 are both great for representing/explaining this. +
tekkenman101  pancreatitis is fat saponification not liquefactive according to FA. +

 +1  (nbme23#42)
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

Why nto tahorluiel ccmor?aian Or hwo idd uoy urel ti to?u I was igitnhkn niaodtair uowdl iraecesn skri orf teruuf ...CA


 +3  (nbme23#48)
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

Why no ?swianteg I neam I get Eastcys si brblyapo eht gdur fo ohecic eobrfe an lla thgni cndae artpy (oll) ubt o'tdn nedutsarnd yhw teerh wudlo be docl timrietxese nda no etginswa whne si AF it syas tphehiyramer nda ah?d?ob??r

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. +11
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. +11
yotsubato  Because the NBME is full of fuckers. The guy is probably dehydrated so he cant sweat anymore? +19
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 :) +4
usmleuser007  Why not LSD? +
d_holles  @usmleuser007 LSD doesn't cause HTN and ↑ HR. +1
sbryant6  @fulminant_life FALSE. KETAMINE CAUSES CARDIOVASCULAR STIMULATION. +9
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/) +
brise  LSD does cause HTN and tachycardia according to uworld! @d_holles +

mousie  Caudal = Bottom of the SC = failure to close = spina bifida and Rostral = top of SC = failure to close = Anencephaly +10
powerhouseofthecell  I'm confused. In first Aid doesn't have meningomyelocele as failure of caudal or rostral pore to close. Is the answer Cadual because in this patient specifically, his condition takes place on L2-5 which is more caudally? +2
usmile1  its a neural tube defect aka failure of neural tube closure +

 +0  (nbme23#15)
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

hwy deos eatenmttr fo rtyiohhpoyd hitw( heoyoielrntxv Im' min)asusg serciane rksi rfo hpyomya?t I hcseo ti psimyl cb tis a momcon dsreeav fcefte fo ntiatss tbu I dt'on elrlya adutndrsen who tniategr horyophisydmti at eth maes item duowl vaeh hityngna to od hiwt ti ??? phel !epeals

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

 +11  (nbme23#33)
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

My aieutgsrndnnd fi A&BCgC;t siht si maboraln = vetoundicc hgainre slso = otsesolcrios VS rlranosSeueny nighrae sols wlli evah onlrma CgABt&;C = ossl fo ahir lecsl

dentist  VS: progressive unilateral hearing loss, doesn't affect Rinne Test, associated with NF2 and actor Mark Ruffalo Otoslcerosis is (usually....) progressive bilateral hearing loss, BC > AC. source +
tallerthanmymom  If BC > AC in BOTH ears, why does he have hearing loss in only one ear? My logic was that he probably had otosclerosis in both ears and then something extra going on in his right ear that would make it worse than the left. I still don't understand why otosclerosis is the best answer here. +2
dul071  Finally!!!! Someone who ACTUALLY explains what the fuck bone conduction even is and teaches the whole topic. Here's the link for anyone else who struggled to find someone who takes time to explain this concept https://www.youtube.com/watch?v=cZYJL9Jg-3k +4
sonofarathorn  ^ Halle-freakin-lujah +

 +9  (nbme23#23)
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

Yruo ttupiyria rpotolcat cllse rehryohppyt nidrug nncgrayep to doecrup anernigcis onsutam fo tlcpranio - trap of teh ypplhigaohoosyt fo snSh'ahee ..nmodreys. csedanrie ooldb lsso dinrgu reydveli anc csuea hceiismc scsenrio of prayiitut

tinydoc  I thought the elevated Estrogen and progesterone depress the function of Prolactin until delivery. I guess you needed to know that it decreases its function by downregulating receptors or something as opposed actually decreasing the prolactin production. I picked gonadotrophs. This was a fair question but I reasoned it out and arrived at the wrong conclusion. +7
maxillarythirdmolar  Specifically, the estrogen is stimulating lactotrophs as progesterone is preventing the prolactin from actually working on the breasts. So it's the estrogen that is stimulating the lactotrophs to grow, and you would see the effects of this growth if it weren't for the progesterone preventing the action of prolactin (their secretory product) on the breasts. +9
dul071  why not somatotrophs. she's understress. wouldn't that increase the production of GH +

 +0  (nbme23#37)
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

ehlp wthi thsi noe .p.ase.le. is hits ubseeac he sha TeyhGpr AND hsooeltrlCe NAD csomlnh.icoyr. oynl LL ccfieidyne pon xulialwed lla of eseht fn?iidsgn I cesho LDL R cdcifyeien sceubae I sesug I htghou ti wuldo saecu lla fo hetm to aensecri tub is ihst pyet fo fycniceeid noly scadioaset thwi gihh ?LLD

sympathetikey  First off, do yourself a favor and check this out - https://www.youtube.com/watch?v=NJYNf-Jcclo The LDL receptor is found on peripheral tissues. It recognizes B100 on LDL, IDL, and VLDL (secreted from the liver). Therefore, an issue with that would cause an increase in those, but mainly LDL. Since in this question we see that Triglycerides and Chylomicrons are elevated, that points towards a different problem. That problem is in the Lipoprotein Lipase receptor. This is the receptor that allows tissues to degrade TGs in Chylomicrons. So, if it's not working, you get increased TGs and Chylomicrons. Additionally, you get eruptive xanthomas, which are the yellow white papules the question refers to. +9
davidw  There is much easier way go to page 94 in first aid. This kid has Type 1 Hyper-Chylomicronemia which is I) Increased Chylomicrons, Increase TG and Increased Cholesterol. It can be either Lipoprotein Lipase or Apolipoprotein CII Deficiency +12
bulgaine  The video sympathetikey referred to only mentions pancreatitis in type IV but according to page 94 of FA 2019 it is also present in type I Hyper-chylomicronemia which is what the question stem is referring to with the abdominal pain, vomiting and increased amylase activity +
dentist  thats not the only difference in that video.... +
paulkarr  Pixorize has a set of videos on all the lipid disorders that made it a breeze to answer. Pixorize is basically sketchy but for biochem and other basic science subjects. +2
futurelatinadr  Pancreatitis was a huge clue for me to think of hyperchylomicronemia +

 +5  (nbme23#5)
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

leaohrC = eFalc no/esreinaaor ilLg = nealgoLal numpeo = ON resonp ot opensr noly yb aannilioth fo atabcier tdmanoecanit ewtLrym/ae = kitc ioci nog/netcilaebMc = ghnsrai irorryapset dan taroth esecroints vls(aia or ts.)pi Glyr,leaen it takes seocl of(r m,axeple uinggoch ro gins)isk ro ltngeyh tcontac to rasped shtee aebrtiac RMD( S/)FCC = tkci bite

smc213  Also, when Meningococcal meningitis is treated ... close contacts are also treated prophylactically whereas the others typically are not. There's also a subunit vaccine for n. meningitis due to high infectivity rate especially in crowded establishments. +6
dentist  So, Cholera is also p2p but Mening is more likely? +1
usmlecharserssss  in cholera people to water => water to people +
qball  Remember the fire sprinklers from Sketchy for M. Meningitis. as respiratory droplets are the easiest to transmit from person to person. +
drschmoctor  but the poop water comes from people so.... +1
llamastep1  Respiratory dropplets is easier than fecal-oral tho +1
lowyield  Can also reason that n. meningitidis is common in college students because they live in close quarters which suggests high rate of transmission even amongst immunocompetent individuals +1
peridot  I can see why fecal-oral can seem like person-to-person transmission. What helped me reason it was that in countries with lots of cases of cholera, the primary reason is lack of water sanitation. Even when you google cholera, you get pictures of people collecting dirty water and how the WHO is aiming to reduce cases of the disease by improving water sources. Therefore it's more of a systemic/environmental problem rather than the fact that one person accidentally touched another person's poopy parts and then transmitted it to their own mouth, making this less of a person-to-person thing, especially when compared to another answer choice such as Meningococcal meningitis. +
bbr  To add, think of the water in cholera as a reservoir. The bug is going to hang out there between infecting another person. In meningitis it seems we are going from 1 persons saliva to another. Without much of a reservoir inbetween. (might be using the word reservoir incorrectly). +

 +3  (nbme23#34)
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

ohgaresptpnoOah sionoigpn = eiAottnd = inrtpoAe Ayaw(ri M crtreoep loebk)cr = iointlda of snibecholor


 +19  (nbme23#8)
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

odraMianf asbhtui + clsoaMu raemunso + Nkce sasm = NEM 2B (MM)P ,ePoh yalleudMr ytrdhoi CA icoan(nltCi engri,cts)e lsauomc ernsuoam

thotcandy  I knew it was MEN2B but forgot medullary ca of Thyroid is parafollicular/c cells which means Calcitonin, not T3/T4 Other answers: AntiThyroglobulin: Hashimoto's (or other thyroiditis) Dexamethasone suppression test: positive/suppressed in pituitary adenoma (acth secreting), negative/unresponsive in Adrenal hyperplasia/adenoma (suppressed by high dose) or ectopic acth (unresponsive to high dose) Serum TSH test: for papillary or follicular ca, thyroid adenomas are usually cold but could also cause HyperT TSHR antibodies: graves disease, hyperT +2

 +4  (nbme23#26)
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

I osech NAP rfo stih one, swa the rlane .a nmeyrussa nad went igrth fro ti tub PNA ulodw hvea meor msicesyt fdiinngs r(v,efe igtweh lo,ss head )ehca nda ulayslu cseffet dmiedl age MEN vs oemnW in .MDF

cbreland  Fibromuscular dysplasia = middle aged female with HTN... Maybe it'll stick this time 🤯 +

 +0  (nbme23#3)
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

nCa esmoneo elspea nexipal this to me? I ontd' nseuntdrda hyw tnigrtsa teh orhte gurd owudl tno ontuc as elnucosix rcr?aetii

seagull  This has to do with Intention-to-treat analysis. Essentially, when participants are non-adherent but the data shouldn't be lost. They just undergo another statistical model to account for their changes. Here is a nice video https://www.youtube.com/watch?v=Kps3VzbykFQ&t=7s +22
dr.xx  Where does the question mention "intention-to-treat"? +
notadoctor  They seem to be pretty obsessed with "intention-to-treat" it's been asked in one way or another in all the new NBMEs that I've done. (Haven't done 24 as yet) +8
wutuwantbruv  They don't, intention-to-treat is just the best way to go about it @dr.xx +
yex  I agree with @notadoctor !! +
ergogenic22  i think if it were per protocol, both groups would be excluded, the ones that were inconsistent, the ones that dropped out, and the ones that switched. But answer choices only allow ITT or exclusion of one group. +

 +2  (nbme23#33)
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

Not ures I am tdndnsegaurin htis sutenqoi - hte aniptet gto na SINAD orf AR nad stih aedeerscd rhe lgtanadosrnsip so ehs oedldevep GD..RE. oDc ddade lsrMtiospoo to oatcerntcu het casdedeer igatroannsdlPs I teh utg adn na ersdave recainto of looriMtpsos si iadarerh .. rrCcto?e

chris07  Yes. Diarrhea is a side effect of misoprostol. +3

 +0  (nbme23#10)
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

saimnsasloA aphiclmogotuPyh idcrare by sdoIex sciaupalsr ktic ilarsmi ot ieababs s(ndssiaoabe)iB roLiberm(leay d)z weerh kcsiteRita ectiktsaiR si ridcaer yb erpioscaesatt hcus sa salef, i,ecl ti,mes and t.ksci sa rpe eht CCD


 +6  (nbme23#27)
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

A gnmhamiaeo is a tyep of igbnen o(rcno)-cesunna mtrou in .tnisfan sTih ormblaan rteclus fo lalsm bdolo eslsvse saarppe on or erdnu eth nsi,k tlpyayilc wntihi eon ot heter eweks eratf tib.hr - c.wtgolnharwirdeowphs.lsimeonga aiHm is a cllpaBir/yVa kmahbtrir

sympathetikey  Probably a Strawberry Hemangioma since she's a baby +9
meningitis  Can anyone explain what is option A? +1
redvelvet  bc, it's a benign "capillary" hemangioma, we can see "thin-walled blood vessels with narrow lumens filled with blood and separated by connective tissue". It sounds similar to "arterioles in a fibrous stroma" but it's capillary. +1
peridot  @meningitis I believe option A ("arterioles in a fibrous stroma") is describing an angiofibroma. The name angiofibroma already tells you that there is some component of fibrotic tissue involved, whereas in this case of strawberry hemangioma, the name tells you that it's more like pure blood vessels (capillaries in this case). +2

 +2  (nbme23#11)
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

nA oei,etpp olas nwnko sa nectanigi ernt,edmnait is eth trap of an naniegt ttah is cdzenegrio yb het mimeun ,ssmtey iilespcfylca by ,sdienotiab B e,slcl or T l.elsc orF ,aelepmx the etppoie si eht icscepfi eepci fo eth gaetinn to ichhw an aoytbndi .sbnid - Wkii - ecBusea the omuatn of eedaLbl X dboun is cdagnhuen yb het itidnoad fo -Y hyte aer neidnnpdtee of eahc etohr ie.. ahrse no iepetpso


 +2  (nbme24#33)
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

A nTee ithw ectonjnii fo hotb nvjtoacinuc = wdee lod uc sola eb nsgauib hoter gudsr sI 12 saery lod and ufor mnhtso just oto odl nda oot nlog of a mtie fro it to be ei?otmpgi I wrenroda it down ot heset owt adn gdeusse ..tb.u I 'sawtn seru I dluoc tinmeliea i.t

medskool123  I picked impetigo because of the gold stippling... I guess I took that as honey crusted lesions. F*ck NBME. +8
yotsubato  Huffing gold spray paint. A la the chrome huffers in Mad Max +7
subclaviansteele  LOL I think that might be what they were going for here. Gold spray paint. +3
et-tu-bromocriptine  Anyone know what may be causing his weight loss and unwillingness to eat? I thought too much into it and put "mercury poisoning", since I thought the heavy metal's abdominal symptoms may have caused him to not want to eat. ¯_(ツ)_/¯ +3
covid2019  I'm not sure about the pathophysiology there... But I do know that inhalants are popular in places where there's extreme poverty. I spent some time abroad, and one of the patients was using inhalants to take the edge off the hunger, so that she could spend her money on food for her kids instead. She also worked on the streets so I guess it also made it easier to, you know... +2

 -1  (nbme24#6)
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

olkoign abck at hsti Q I tiocen thta eht teniatp lsoa sah tsrpoehnynie .co..lud hatt eavh ebne a luce ot cedunil the SAM cb sti os clseo to teh nlear erraiset ealn(R a t?esisno)s

nwinkelmann  I didn't know how to approach this either, but now this is my thought process: Patient has pain after eating. If it's not due to an ulcer (which is the only thing I could come up with because I didn't know what else it was talking about), why would eating cause pain? Well... eating causes increased GIT activity which means increased blood flow. As you pointed out, the patient has HTN and CAD, indicating likely extensive atherosclerosis. This is important because why would eating leading to increased blood flow cause pain, when usually it doesn't? Well... atherosclerosis in the heart leads to stable angina. This presentation sounds like a "stable angina" of the abdomen. +

 +11  (nbme24#36)
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

rt"sode"na are snipohhosetsp,Ba mcnymloo esdu to traet/enveptr oit.sesorospo Mots oncmmo rvsedea etsefcf rae stpoiaEishg tat(snpie sohldu etka htwi rwaet adn eb rtpuigh rof ta tseal is,3utn)em0 iOcrsestneoso fo eth aw,j dan ctiapayl lremfao tsress serrctufa. ekt-na rhtig orfm FA 0182 pg 417

almondbreeze  FA 2019 pg 248 pill-induced esophagitis : bisphosphonates, ferrous sulfate, NSAIDs, potassium chloroide, tetracyclines +3

 +1  (nbme24#13)
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

si hsti suetbcua ntrdoiceadis aatoidessc eimaoMfpraor-neetrlibv ?NG

jus2234  The question describes how he had a strep infection 15 days ago, and now this is poststreptococcal glomeruloneprhitis, which can also be described as proliferative glomerulonephritis +10
seagull  The question would be too fair if it just said PSGN. Instead we need to smell our own farts first. +68
yotsubato  And they used terminology NOT found in FA +5
water  who said they were limited to FA? +2
nbmehelp  FA uses the common nomenclature and the fact most of our other resources use the same nomenclature for this, I think we can agree that is is the accepted terms. If they're gonna decide not to use the nomenclature that most medical students are taught then they should provide their own study materials at that point for us to use. The test shouldn't be this convoluted for no reason. +8
alimd  Ok. They can use terminology whatever they want. But BUN-CR>20 is CLEARLY prerenal right? +
an_improved_me  I think you're talking passed each other. The fact of the matter is that NBME doesn't really care how we prepare. It cares to stratify students using whatever stupid metrics it deems necessary. It's not limited to first-aid, and that doesn't mean that it shouldn't be. +

 +1  (nbme24#6)
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

Is 45 siuetnm too nglo ot be aylanatcichp and wuodl the aescebn fo hrsa (uariacr,it u)prsirtu OR cacypta?lhina

hayayah  Yes! Allergic/anaphylactic blood transfusion reaction is within minutes to 2-3 hours. (pg 114 of the 2019 FA has a list of them ordered by time) +8
hayayah  (also allergy / anaphylactic presents with more skin findings (urticaria, pruritus) +7
seagull  The time through me off too. I though ABO mismatch since it occured around an hour. I thought TRALI would take a little longer. +7
charcot_bouchard  Guys anaphylactic reaction to whole blood doesnt occur much except for selective IgA defi. so look out for prev history of mucosal infection. And it can have all feature of type 1 HS inclding bronchospasm. +5
soph  I saw hypotension and though anaphylaxis........ -.- +
usmile1  Chest Xray showed "bilateral diffuse airspace disease". This is much more indicative of TRALI than anaphylaxis which would have wheezing and possibly respiratory arrest but no actual damage to the lungs. Additionally there was no urticaria or pruritus one would expect to see with anaphylaxis. +5

 +1  (nbme24#31)
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

if yuro CO lfasl ... wdulno't atht seuac rntssocaitioonvc in eht unlg rvsct?ealuau oaxpyhi iedncdu crocon?vosnstiita

ug123  My take on this----His respirations are high-22/min--that will cause c02 washout---so actually lung has high oxygen---pulmonary vasodilation. Dont know if its right. +5
usmleuser007  My understanding is that the pulmonary circulation changes very little in terms of an acute MI. It is b/c pulmonary circulation has a lot more room to fill with blood much like the spleen in terms of blood accumulation. With higher volume of blood in pulmonary circulation, more blood vessels are able to be recruited specially the apex. With more recruited blood vessels = reduced pressure d/t circulation in parallel +




Subcomments ...

unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

heTnpiyhlerxdi adn rptennzeiBo era ascmisnrcinitau atht cna eattr het nsteirg tmorre adn yiiidgrt fo a.spnnromiisk

mousie  haloperidol induced Parkinson's... ? adding a anticholinergic can counter these adverse effects of the antipsychotic .. ? +3  
fulminant_life  @mousie yeah it balances the dopamine-cholinergic imbalance caused by the antipsychotics +  
kai  +So antipsychotics induce Extrapyramidal side effects which is drug induced Parkinson = low Dopamine High Ach, and you would treat this with anticholinergic (Benztropine).This is neurologic. +Antipsychotics also produce non-neurologic, systemic anti-cholinergic effects like dry mouth, sedation, hypotension etc +  


submitted by step420(34),
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

vrintiaRo nistbihi !CY54P0 oS you can use it to sootb teh ionttccnoaren fo the rhteo trsoeeaP oirinhtibs yb npvrgitnee etrhi lmsbitaome by P5!Y04C

mousie  who knew +6  
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 +4  
criovoly  "CRACK AMIGOS" Cimetidine Ritonavir Amiodarone Ciprofloxacion Ketoconazole Acute alcoholism Macrolides Isoniasid Grapefruit juice Omeprazole Sulfonamides +6  
drzed  Macrolides EXCEPT azithromycin -- they like to trick you with that one. +2  
steatorrhea  chronic alcohol induces 450, acute alcohol inhibits 450 +2  


submitted by sakbarh(5),
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

Seh sah amny aiaraoscurvcld irsk arscfto and eykill deeufrfs a kstero fo teh iblsara yeratr uaisncg lkcode in ysdoenr.m cdoriAncg ot FA thsi can uscae a eosnli at eth ns,op meadr,lul ro erlow iirbndma -- erhveow lyaacmioaltn eth lrsbaia reryta nusr rtigh no pto fo the snpo os xipmroiyt sotm ieykll easmk ti teh ihrtg .wnesar

mousie  The Boards and Beyond video of SC strokes was really helpful at explaining this if you are a video kind of person! +1  
yotsubato  What pushed me away from pons was "dysarthric speech" which implied she still could speak to some degree.... which made me pick medulla. +3  
mimi21  I think FA may be misleading. Primarily it will effect the Pons because that is where the majority of the Basilar Artery is located. and I guess it could effect the other locations? but everywhere I have looked Locked-in syndrome is an issue with the Pons. But someone please continue to clarify, cause I was a bit tripped up at first with this question +  
cbrodo  Although FA says it can be pons, medulla, or lower midbrain, "locked-in" syndrome generally arises from BL pons lesions. Another way you can rule out medulla and midbrain in this question is the ocular movement findings. Since the patient has impaired horizontal gaze BL, you can conclude that the Abducens nuclei are involved on both sides. The abducens nuclei are located in the pons. +42  
gh889  USMLE secrets also states that it is most commonly in the pons Bates states that locked-in syndrome preserves consciousness but these patients have limited speaking ability +  


unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

eTh ostm mttproina thins ot het usoqinte are as llwof,os hitw 2# ngeib teh omts :scipecfi

)1 tneptia spotrer napi hwit ehroaved tnmooi dan retpsor terurrenc dovaeerh ootnmi udrngi kor.w aOhveerd tinoom nac meadag hte rpsnspusitaua ulesmc eud to itmmgnpeein by the nami.roco

)2 Pnai si twosr tihw ianternl rantoiot fo hte edorhusl - hits is neisstntoc hitw the nngfiisd of eht -etpmncay ets,t hhwci sainidtec a purisasnptasu ujirn.y

mousie  I was thinking along the lines of overhead motion - damage to the subacromial bursa which is between the acromion and the supraspinatus ... also its the most commonly injured rotator cuff m. so could have guessed this one right +1  
sympathetikey  Thanks for the explanation. I was scratching my head as to why this is correct, since supraspinatus only does 15 degrees of abduction, but you make a lot of sense. +1  
charcot_bouchard  IDK WTF i picked Trapezius +37  
ls3076  why would injury to supraspinatus cause weakness with internal rotation though? +7  
targetusmle  yeah coz of that i picked subscapularis +3  
maddy1994  ya the whole question pointed to supraspinatus ...but last line internal rotation made me pick subscapularis +3  
darthskywalker306  I went for Trapezius. That shoulder flexion thing was a big distraction. Silly me. +1  
lowyield  saw someone post this on one of the other questions about shoulder... and it works pretty good for this https://www.amboss.com/us/knowledge/Soft_tissue_lesions_of_the_shoulder there's some videos in it, this specific one for the question is the neer test +  
psay1  FA2019 pg. 438 +1  


mousie  Caudal = Bottom of the SC = failure to close = spina bifida and Rostral = top of SC = failure to close = Anencephaly +10  
powerhouseofthecell  I'm confused. In first Aid doesn't have meningomyelocele as failure of caudal or rostral pore to close. Is the answer Cadual because in this patient specifically, his condition takes place on L2-5 which is more caudally? +2  
usmile1  its a neural tube defect aka failure of neural tube closure +  


submitted by beeip(124),
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

hTe tebs I nca rsna,detudn ery'het isbngdierc ornetdeilma prsaylepiah, a reltus of csxees e,esrnogt a odtseir hnemoor hatt ntltsorascea ot the sneuluc nda bdisn tis nirtrpsacnoti roc.tfa

mousie  My exact thinking also! +7  
sympathetikey  Ditto. +  
meningitis  My thought as well but the answer says: "Binding of ligand to Nuclear transcription factor" and I thought to myself: "Estrogen Receptors aren't transcription factors.. they are receptors with Transcription Factor function that bind to the ER Element and recruit more Transcription Factors". Can anyone explain what I am missing? Am overthinking things? +  
criovoly  You are overthinking it, Steroid hormones receptor is found intracellular in the cytoplasm then they are translocated to the nucleus where they regulate gene transcription. HOPE THIS HELPS +4  
eve1000  Could this be due to the PTEN gene being linked to endometrial hyperplasia? +  
feochromocytoma  The question stem says it's glandular hyperplasia "without" atypia It's just due to increased levels of estrogen causing the hyperplasia +4  
faus305  This is a bunch of scientific mumbo jumbo +1  


unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

thaW are ew pspeodus to eb oiklnog at? I see uceednlatituml anitg cls.le I slao see iltiretanf ’nta(c lelt fi hsit is rmaenolocun or tn).o

methylased  Young child following URI with TCP is pretty classic ITP. Sometimes they throw in extra stuff on purpose, but I didn’t see much on the bone marrow aspirate either. +7  
mousie  I was also thinking ITP but the bone marrow image kind of threw me off too, not sure what I'm supposed to see but still think ITP is best choice ... +  
meningitis  It also almost threw me off, but then I remembered he had low platelet count and I guessed those multinucleated cells were Megakaryocytes (I looked for Megakaryocyte Bone Marrow Biopsy in google and they are the same). +1  
what  Bone marrow shows increased megakaryocytes -> ITP +  


unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

eTh etatipn hsa TAN yacseonrd ot nlera im.iasceh uDe to rabluut snsecro,i hte itaptne illw hvae na ltadevee e.aNF ehT sai'tptne urein wlil laso be tde,uli utb tish will eb erectledf yb hte low uneir olysmltaio, ont hte eNFa

mousie  Hypotension can also cause pre renal azotemia with a FENa <1%.... How do you know this is ischemic ATN and not hypotension induced Prerenal Azotemia? +11  
sympathetikey  I had the same thought as you @mousie, but I think "azotemia" and low urine output push it more towards ATN (looking back; I got it wrong too). Plus, the initially MVC / muscle damage probably caused some tubule injury by itself. +2  
ajo  This might help clarify why the pt. has ATN rather than pre renal azotemia. The question did mention, though subtly, that the bleeding was controlled. That most likely indicates that his hypovolemia has been corrected. Developing azotemia 24 hrs after correction of hypovolemia is more suggestive of ATN (since he doesn't have hypovolemia anymore). I hope that helps and feel free to correct me, if I am wrong. +41  
ajo  In addition to my earlier comment, I just noticed the question also explicitly mentioned that he was fully volume restored. Which is consistent with my earlier assumption! +14  
gh889  Although initially, hypotension causes prerenal azotemia, the volume correction pushes you away from prerenal azotemia. but they want you to remember that in hypovolemia, the kidneys are also becoming ischemic, and so development of azotemia 24 hours later is more indicative of intrarenal azotemia due to ATN +  
sugaplum  for anyone who wants to see it: FA 2019 pg591 +1  
divya  i'm confused about one thing. if the tubules aren't working like they should, the bun:cr ratio falls right? doesn't that essentially mean azotemia reduces too? +  
osler_weber_rendu  Lets all take a moment to admire how shit this question is "Bp 90/60.""Repeated episodes of hypotension in the OR" and still the answer is ATN +4  
donttrustmyanswers  @osler_wever_rendu ATN can be caused by ischemia. +2  


unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

atetnPi ash a frcaerut to het freornii r.tibo ishT cna gdm V2 or nrtpae het IR lcse.mu Only RI tematrpnen louwd imirpa nisiv.o

nlkrueger  if this isn't a globe rupture than idk what is tbh +15  
mousie  the air in the center of the globe made me think rupture too ..... +3  
sajaqua1  There may be some global rupture, but impairment of one of the ocular muscles causing diplopia would still be the best explanation for this patient's double vision. +13  
catch-22  Globe rupture leads to entrapment of the IR muscle which causes diplopia. The question is asking what is causing his visual complaints, which is diplopia, not loss of vision. +2  


unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

lonevesEp eibtfen hte urivs ni htat eth siurv illw ookl kiel the sho,t fatiligticna o.insfu ,vHrweoe an elenovpde sriuv is nllyerega ssel tsleba ntah a eknda risoadacelh rvuis (endka suesrvi era alregelyn lai.)rhdescoa

docred123  So do these patients have h.Flu? What was the giveaway? Thanks +1  
mousie  I chose Enveloped simply bc it said dies when heated, not sure if there where any other clues to narrow this down or make me feel more confident in my choice but I went with it anyway +16  
eclipse  I don't think they expected us to narrow down the answer to a specific virus. Enveloped viruses tend to be less stable (?) than the non-enveloped ones and don't survive as well under harsher environments (outside human's body, heat, etc.) +2  
peridot  To add on, I also have no idea what virus this could be but the question stem does say "A previously unidentified virus is recovered from urine specimens" making me think that it's not something we're supposed to have know about, unless I'm totally understanding it wrong. +1  


submitted by seagull(1567),
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

'im tills ndcoeivnc this si irliterab lbweo don.rymes gneCha my mind.

mousie  haha I picked this too bc she's 44.... isn't celiac something that would present much younger?? but I don't think IBS would cause an iron deficiency anemia is the hint they were trying to give us. +2  
sympathetikey  If it was IBS, they would have mentioned something about them having abdominal pain, different stool frequency, and then relief after defecation, me thinks. +3  
aknemu  I was between celiac sprue and IBS but what pushed me towards celiac's was a few things: 1. The Iron deficency anemia (I think that would be unlikely in IBS) 2. Steatorrhea (which would also be unlikley in IBS) 3. Osteopenia- I was think vitamin D deficency 4. Lack of a psychiatric history +5  
catch-22  IBS is a diagnosis of exclusion. If you haven't excluded Celiac (and this can't be excluded based on epidemiology alone), you can't diagnose IBS. +12  
arcanumm  I think you may have confused it with IBD, IBS would not present like this. +3  


submitted by docred123(6),
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

Can eoemsno leaspe tferhur pelinxa siht qn?eiuots tWha otcibaltitiass lsynaias suhlod I eb khnitnig ?atobu

vshummy  I got this wrong but best I could come up with was this was about Bradford Hill Criteria for establishing causality. And of the 9 included, F has the most that are actually included in the information given to us. I chose D but I think since we don't know about other study results, we can't include it as directly answering the question about *this* study. https://en.m.wikipedia.org/wiki/Bradford_Hill_criteria Someone double check me here: A: biologic plausibility is a weak point in the criteria, according to the wiki. Also probably not true in regards to this study. B: Sensitivity is not part of the criteria C: " " D: We don't know about consistency E: " B " +26  
mousie  Found this ... still confused about why A and D are wrong though... https://stats.stackexchange.com/questions/534/under-what-conditions-does-correlation-imply-causation +1  
2zanzibar  The three criteria for causality are: 1) empirical association (i.e. strength of association; a change in independent variable correlates or is associated with a change in dependent variable), 2) time order (i.e. temporal relationship; the independent variable must come before change in the dependent variable, or plainly stated, cause must come before effect). and 3) nonspuriousness (i.e. dose-response gradient; the relationship between 2 variables is due to a direct relationship between the two, not because of the actions of changes in a third variable... this can be evinced by a dose-dependent response). +9  


submitted by ferrero(40),
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

A rvey isariml uiesoqnt I ehav nees ni sbQkna illw kas ywh a atptein twhi grhit rthea aelrfui does ton pevdeol eedma nad eht reasnw si nracedsei thpiamcly rdenaaig. I gto shti noqeitsu ogwrn iynaogilrl acebues I seawdnre lgnao siht neil of irnsagone but I kihnt ni tish caes ti all ash ot od hwit EWRHE eht xtare epsrerus is ciomng rfm.o nI hsit qneusiot hte tp sah tadiicslo syetohinrenp os uoy anc nhikt autbo eth srerpesu sa mcgino wrrdaof"" os norstitcgnci rcaalryplepi tncerhssip nca tevnper an erciesan in sesrerpu in het cylialarp edb. eHowvre ofr htgri rathe ulaerif isht axert fduil is oingmc mrof eht SPPITEOO idctnoier swrc(kabad fomr het trghi art)eh adn nnisgiccrtto ipayplrecral tprcisnehs can od nngioth no( ptopeiso sied of laacirylp dbe) - the olny awy to nveetpr demae is ot rnaeseci hltamycip adgnra.ei

seagull  The question clearly lead us to think about Osmotic pressure by talking about protein and urine. I wonder how many people used that line of reasoning (like myself)? +15  
mousie  Great explanation, I chose lymphatic drainage for the same reasoning (similar Q on different bank) +6  
sympathetikey  My reasoning was much more simplistic (maybe too simple) but in my mind, systolic BP is determined by Cardiac Output and diastolic BP is determined by arterioles. Therefore, what comes before the capillary and regulates resistance? Arterioles. That's why I said that pre-capillary resistance. +31  
cr  the main difference between the 2 cases is that in this case the patient has high BP +1  
link981  So in kindergarten language the question is essentially asking how high pressure in the arterial system is NOT transmitted to the venous system (which is where EDEMA develops). But you know they have to add all this info to try confuse a basic principle and make you second guess yourself. (Got it wrong by the way) because of what @ferrero said of Qbank questions. +6  
hello  @ferrero what are you talking about? lymphatic drainage is the wrong answer... +1  
hello  ok never mind. i got it. hard to understand b/c it was a big block of text. +2  
asteroides  I think they may be talking about the myogenic compensatory mechanism: https://www.ncbi.nlm.nih.gov/books/NBK53445/figure/fig4.1/?report=objectonly "Increased arterial or venous pressure also induces myogenic constriction of arterioles and precapillary sphincters, which raises arteriolar resistance (thereby minimizing the increase in capillary pressure) and reduces the microvascular surface area available for fluid exchange. For example, because vascular smooth muscle in arterial and arteriolar walls contracts when exposed to elevated intravascular pressures, this myogenic response increases precapillary resistance and protects capillaries from a concomitant rise in their intravascular pressure." +3  


submitted by seagull(1567),
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

Tihs si a pyet II lnRea baluruT idso.scAi My caeldiM Shocol Nrvee tghtau htsi to e.m iDd you aslo og to ovyrept mde ?olhsoc Im' seipdsurr teyh enev aegv su oitetl aeppr.

mousie  haha mine didn't either. But they usually leave out most high yield info so, to be expected I guess. +8  
yotsubato  I didnt have physiology in my medical school. None, zip, zero, none. Nor did I have biochem. They said "you learned all this shit in undergrad, youll memorize it again for step 1 and forget it promptly" and then just moved on. +9  
jcmed  In the Caribbean thats 1 thing we were given... lots and lots of toilet paper +2  


submitted by hayayah(1077),
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

fbrilemFioz is a ,fbaeirt esdu ofr rwieglon GT velels.

mousie  I also chose Gemfibrozil too because its the best TG lowering drug listed but I can see where there might be some red flags for this drug in the way they asked the question... 40 year old obese woman with some upper abdominal pain ..... HELLO GALL STONES which is a common adverse outcome of Fibrates. +10  
uslme123  Well I didn't wanna give a fat, forty, female, that smokes a fibrate. So a statin, for me, was the best next option. +9  
whoissaad  Used same reasoning to choose statins. Fibrates are the main drug of choice for hypertriglyceridemia but given her symptoms, statins made more sense. Why do they do this to us... +  
roaaaj  what a tricky question! there are multiple factors should be taken in consideration.. she has triglyceridemia which put her in risk of pancreatitis, and most importantly atherosclerotic disease, and all of that would outweigh the risk of giving her gallstone. +  
paulkarr  Yeah I had statins selected initially because "statins are always the answer" but when I saw them stating first line "recently diagnosed with hyper TG" I figured this follow-up was purely to address that. So Fibrate is the best move. +2  


submitted by docred123(6),
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

yHe acn omneeos plesae xleniap s!hti I am otn sure hwo ot od eht ahtm, I kpee tntgige tdeppir .pu

mousie  Equation is Maintenance dose = (concentration at steady state) * (Clearance) if you convert all the units to what it wanted them in (mg/kg/day) you'll get 25.92 like weird-in said above I didn't think to round 0.09 to 0.1 of course so I guessed 2.5 assuming I must have done a conversion wrong and was off by a tenth .... BOO bad Q +4  
hyperfukus  OMG ME TOO!!!!! +  


unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

yeH anc oeemosn apnliex het aenlr nisin?gfd isPoyh is lnietidfey tno ym otsgnr utsi.

sI ti subceea eh sha ufiNla+/d neoitertn atht his ccfpisie tivyarg dan Na+ aer os ?wol sI heert a snearo rof hstoe efcpcsii eniNtinaerB/Uc reov hte h?store

brolycow  He has heart failure which leads to a decrease in renal blood flow and prerenal azotemia. In prerenal azotemia BUN/Cr ratio is >= 20; Activation of the RAAS system due to the prerenal azotemia means that the spec grav is high at 1.025 and he is holding onto sodium so urinary sodium will be low (<20, FENa <1%). +7  
mousie  Agree with above, HF and not taking meds would increase or activate RAAS = increase ATII and Aldosterone which leads to body retaining Na and H2O so the urine concentration of Na will be low and the urine will be very concentrated i.e. high SG. I didn't think about the BUN:Cr > 20 but this would have also narrowed it down! +2  


submitted by hayayah(1077),
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

ooolambC is na yee aaobrimyltn atth urocsc efober rhtib. Teer'yh gnsmisi specie of ueitss ni sutseurrtc ttha frmo het ee.y

  • oomCbosal eifactngf het rsii, hwhci luetrs ni a ""klheeyo apercpanea fo teh uippl, gneayrlel do nto laed to sionvi os.sl

  • lmCoaboso iigvlonnv the inater ulters ni isionv sslo ni sfcpceii pastr of the aisluv e.lidf

  • raegL ilentar oasbmcloo or ohtse icgtneaff eth cptio rnvee acn aceus low voni,is hhicw aemns visino loss that aocnnt eb yelmolctpe oetcrcedr wtih glsasse or oanttcc ssen.el

mousie  thanks for this explanation! +  
macrohphage95  can any one explain to me why not lens ? +  
krewfoo99  @macrophage95 Lens are an interal part of the refractive power of the eye. Without the lens the image would not be formed on the retina, thus leading to visual loss +4  
qfever  Do anyone know why not choroid? +1  
adong  @qfever, no choroid would also be more detrimental to vision since it supplies blood to the retina +2  
irgunner  That random zanki card with colobomas associated with a failure of the choroid fissure to close messed me up +11  
mnemonicsfordayz  Seems like the key to this question is in what is omitted from the question stem: there is no mention of vision loss. If we assume there is no vision loss, then we can eliminate things associated with visual acuity (weird to think of in 2 week old but whatever): C, D, E, F. Also, by @hayayah 's reasoning, we eliminate E & F. If you reconsider the "asymmetric left pupil" then the only likely answer between A & B is B, Iris because the iris' central opening forms the pupil. I mistakenly put A because I was thinking of the choroid fissure and I read the question incorrectly - but it's a poorly worded question IMO. +  
mamed  Key here is that it doesn't affect vision- the only thing would be the iris. All others are used in vision. Don't have to know what a coloboma actually is. +3  
azibird  The extra section of that Zanki card specifically says that a coloboma "can be seen in the iris, retina, choroid, or optic disc." Don't you dare talk trash about Zanki! +2  


submitted by docred123(6),
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

iH gusy acn mseoeno seelap olbataere on ehste nfsinid.g I dsetdnnura ehs ahs nglu rancec htsat' mniegidp her cr.ethaa utB hwo si hist teernpstrevaei of na suocbvrttei odriedrs? tAen'r lugn rceascn civetritsre if gyhiantn? sahT kn

nlkrueger  I agree that it's confusing but I looked at it as a physical *obstruction* since it's impinging on the airway.... but yeah idk this is weird +  
ferrero  Doesn't the trachea have cartilage rings so it wouldn't collapse which makes it seem less like a typical obstructive disorder? I'm really not sure why FVC would change because I don't see how total lung capacity or residual volume would change because those are static conditions where there is no airflow at all. I understand FEV1, peak expiratory flow, peak inspiratory flow etc. +2  
mousie  Agree this is a really tough Q but I also think I really over thought it... I eliminated all with a normal Ratio bc something obstructing would obviously produce an obstructive pattern although I don't know why FVC would be decreased. I wasn't sure about both peak expiratory and inspiration flow being decreased can someone help me with this or tell me I'm totally overthinking again.. are they both decreased simply bc theres an obstruction ..? +4  
mimi21  Yea I got confused on this question. But I guess they wanted us to look at it as a obstructive disease . If this were the case all of those function tests would dec. ( See FA ) +  
gh889  Because the obstruction is above the alveolar regions there is a decrease in air flow, not lung volumes, which would make this an obstructive pathology. +3  
charcot_bouchard  FVC here dec same way it dec in Obstructive lung disease. Read the concept of Equal pressure point of BnB. There he says in bronchitis we have onstructive pattern because inflammed airways gen more resistance. so EPP comes early. I guess here due to tracheal narrowing pressure inc downstream. which collapses smaller airway. result in air trapping. +1  


submitted by trazabone(15),
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

dynieK skmae 2-15, ydyhxor vatinmi .D hc5)yri2tr(ald clooixy- ivt D lid(l)acioc is dame ni the ,elivr nad irhaipoadhrstyyomp uwldo tno aeedcesr its lselve sa ti cats to raieecsn lpaah-1 arloydhysex ni eht yndkie to arecnsie aorcltiicl rooectcnntsnai t;-g-& hpeChaatpso/ taonprsoireb rofm eht nboe dna malsl i.iensettn

queezyfish  I'm confused about the phosphate level in questions like these. Decreased calcitriol would decrease phosphate absorption while PTH decrease lowers phosphate excretion. I'm assuming that the PTH decrease has the greater effect with serum phosphate levels? +2  
mousie  PTH = "Phosphate trashing hormone" if PTH is high Phosphate must be low - they are always opposite (unless d/t renal failure then Phosphate will be high - kidneys will be unable to get rid of phosphate) So low Ca d/t low PTH does not effect 25 H. Vit D ... only 1,25 H Vit D (active Calcitriol)? +4  
haliburton  Clarification because I was confused: PTH stimulates kidney to produce 1,25-(OH)2 D3 (calcitriol) via 1α-hydroxylase in proximal convoluted tubule. Therefore, without parathyroid glands, low PTH, 25,D is not converted and therefore not down (normal or up). phosphate "trashed" by PTH as eloquently stated above. +1  
zbird  Here the primary defect is high up from the parathyroid gland, there is decresed or no PTH which normally trashes phosphate but not in this case so serum PHOSPHATE INCREASES and the serum calcium is low because PTH should have prevented the urine calcium so there is calciuria and no resorption from bone-LOW CALCIUM, Vitamin-D is independent of PTH so stays NORMAL +  


submitted by neonem(571),
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

ihTs is eauct omyeichlt fssraoutnni ,actronei a pety II iityhvinsyperets eehrw ompedefrr- gMI dntbaesioi nibd to ltaiebmniocp BOA gsinaetn on dnroo Cs,RB chwih csaeus naivasructlar smoshyli.e Rh lpyibaciii,ontmt ekli _elolreoncd sad,i mceos oemr nito yalp ihwt R-iblimhttpicaoy fo rynpgenac nda ti is ued ot GIg o,atsiidben ihwhc mroe foten aesuc caratrulvsexa lysimsheo cesin npclesi aepoarmgcsh ehva sehto g-maF-cRma roprectes ot bind eaevhwrt gGI hsa hugc.ta ltxsruvEacara ne'otsd ueasc taht hepsntynooi, vfe,er lnfka naip secaodtais hiwt inmerbooihualg nscie eth aghmsapcore hlod on to eth gdaeredd CRBs adn vtnocer ti ot iv,bdeirlni ihhcw anc esyfal be erexdtce yb eth v.lire

mousie  Could you help me with understanding why this isn't a Type I HSR? I understand that ABO incompatibility is Type II HSR but I don't know how to tell the difference between a patient who is IgA deficient and having a Type I Reaction to an infusion vs ABO incompatibility .... +8  
sympathetikey  @mousie - https://imgur.com/QH5rCEX Basically, think of Type 1 HS like a normal allergic reaction (itchy, wheezing, etc.). Whereas, with ABO incompatibility you get the question's presentation. +7  
medpsychosis  When it comes to Acute hemolytic transfusion reactions, they are Type II hypersensitivity and divided into Intravascular (ABO) and Extravascular (host Ab against foreign antigen on donor RBC). The differentiating factor between them is simple. Intravascular (ABO) will present with hemoglobinuria alongside all the other common symptoms (fever,hypotension, tachypnea etc.) Extravascular hemolysis will stand out with Jaundice as one of the presenting symptoms. Hope this helps! +6  
cassdawg  Also just to add: Rh incompatibility causes a delayed hemolytic transfusion reaction, this reaction was immediate so it is indicative more of the ABO blood group incompatibility (FA2020 p114 has all the blood transfusion reactions) +1  


submitted by brethren_md(90),
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

eiqeursR ikwnogn owh ot lclataeuc na ainno pga - kool it up. In shti scae, ti si a rnoalm nniao agp acmtlebio ociss.iad ownK teh mcmsoineun SMLEIPUD nad ASSRAHD. aRnel blaurTu coissida si teh lnyo anesrw ocihce taht si an meplxea fo a nloarm oanni bltaeicom issaid.co

mousie  Anion Gap: Na - (Cl + HCO3) = normally around 10-12 +3  
seagull  good to know. I keep looking up the urine values but all it said was "varies", then I threw my computer and yelled "does that vary Mother F****ers. I do feel better now. +67  
_yeetmasterflex  glad I wasn't the only one who got very pissed off at the urine values +4  
fulminant_life  Usually the first thing I look at is whether or not the Cl- is high. Generally if the Cl- is high its going to be a normal gap +7  
henoch schonlein  i think they gave you the urine values bc you can calculate the URINE anion gap which is (Na + K - Cl). In this case the Urine Anion Gap is positive (5). Boards and Beyond mentions that a positive UAG is due to Renal Tubular Acidosis Type 1 (inability of alpha intercalated cells to secrete hydrogen ions). just another approach to answer this q +19  
270onstep1  Actually diarrhea is the "D" in "HARDASS"(reason why I was stuck between Chron's and RTA). Ended up getting it right with RTA.. +1  
talha_s  So the reason this is not Crohn's disease is actually what BnB explains in Renal Tubular acidosis video. Anytime there is a Metabolic Acidosis with intact kidney secretion of H+, the URINARY Anion gap (Na+K-Cl) is NEGATIVE. This is because the excess NH4 that is secreted into urine is combined with Cl-. Therefore, in Crohn's disease and Type 2 Renal Tubular Acidosis, the urinary anion gap is NEGATIVE. In this question, the urinary anion gap is POSITIVE so this would be an example of Type 1 RTA because the kidney can not excrete H+. I got it right by chance, definitely did not understand it in this much detail when I was answering it lol +8  


submitted by neonem(571),
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

iSenc isth ntiptae is a oke,n-mnrso ti si essl to be slmal clel mrcnioaca, uuoasmsq elcl cmaano,irc ro aregl lcle oiaamrncc fo eth n.gul ideseBs samll lcle roacmnaci bengi rfmo cornuodennieer rgiion, hte eon amjor lgun cncaer seebdircd yb snets of i,atewdleeitlendfr-f rg"ur"lea lcles si a arciocndi oturm. oAlnlii,yddta oeesrtst rea hliatoiolgsc uarestfe of odniarcci rmouts fu(n :caft etrestos asol in oneadtsrlompbmueas/myeonas i(n S)C,N ,sitlarteamsonbo nolaugsar ecll truosm nraiov(a acn)rce)

mousie  When ever I hear Rosettes I always think NE tumors .... and I agree non smoking kind of RO small cell, squamous cell, or lg cell +5  
charcot_bouchard  I thought it was Hamartoma & pick chondrocyte! Can lung even have hamartoma? Pardon me it was the laast ques of whole nbme +8  
drmomo  @charcot_bouchard i thought the same. uworld gave a question on coin lesion in the lungs as classically hamartoma +7  
anbumd  From pathoma benign coin lesions such as bronchial hamartomas composed of lung tissue and cartilage are especially found in younger patients. So i guess because of the age and histology this would be less likely. +2  
jj375  Also once it said membrane bound granules inside the cells, I ruled out hamartoma. It seems to be describing the secretory granules inside a carcinoid tumor. Here is a photo! https://www.researchgate.net/figure/b-Higher-magnification-showing-characteristic-membrane-bound-secretory-granules-which_fig2_22540051 +  


submitted by neonem(571),
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

I tnikh eht esorna you dnee to centji pdtrioonagson ni tihs asec is eucbeas oyu dnee SHF nda LH to uprcdoe sem.rp SHF timsetuals hte sieltro ,lcsle hhcwi enli eht freimiossuen etsubul and lhpe hte mgrtapsaonieo ruopdec a.pctesesmotyr srtneeoeostT si a dcuorpt fo Ldyeig lescl hnew hye'tre amtltseuid by LH, so netjcigni steteoestnro dolwu asbpsy that pste tub ti 'lotwund lrleya lhpe hiwt remgisnpsso.eaet oHew,rev ijitegcnn GRHn olsa t'sdone 'dtones ayrell ehpl eeuscba uoy dnee htat tplesulia RGnH at gnith to emka LH nad FHS rwhease lot-gannigc HRGn laansog cyluatla scdereea LH dan SFH .odtoipurcn

m-ice  Adding on to the answer above. I was stuck between the gonadotropin injections and clomiphene. But, clomiphene acts to increase activity of GnRH which then exerts its effects on the pituitary. The man in this question had his pituitary removed because of an adenoma. So, he needs the FSH and LH directly. +22  
mousie  agree! Removal of the pituitary would case a deficit in Gonadotropins (LH, FSH) and therefore nothing to simulate the testes to make sperm... replacing the T with a patch would not stimulate the testes to make sperm and if his axis was intact (although its not) this would further down regulate the production of sperm. I eliminated Clomiphene because if he dosent have T to induce negative influence on the hypothalamus he will have increased GnRH and further increasing it with Clomiphene would not correct the deficit in Gonadotropins. +4  
neonem  Oh duh... that makes much more sense. Thanks! P.s. I thought clomiphene was more of a fertility drug for women, since it blocks negative feedback of estrogen on the hypothalamus/pituitary. But in men the system is under feedback due to testosterone, not estrogen. +6  


unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

aCn ybyanod nalpixe iths on?e I ptu edpeeatr ttses ubsceae I smedsua an -o3rla8-yed mawon is na unsaulu achdeoirmgp fro ilpyshi.s

m-ice  83 might seem an uncommon age, but we don't know for sure her sexual history. She only recently (8 months ago) started showing some signs of mild cognitive impairment. She has all these results implying that she has syphilis, so the most likely answer is that she has syphilis, so we should speak to her privately about her sexual history. The tests don't necessarily means she got syphilis very recently, it's possible she's had syphilis for a while and never got treated. +5  
mousie  I understand that she could possibly have syphilis but I also put repeat tests because I know there are a few things that can cause false positive VRDLs but if she also has a + RPR does this make a FP less likely? And also if she has mild cognitive impairment you still discuss with her not her daughter correct ...? +4  
m-ice  This definitely could be a false positive, but before we want to consider it to be a false positive, we should talk to the patient about it privately. Assuming that it's a false positive before asking the patient about it could delay treatment of her syphilis. There's a chance she didn't want to disclose her sexual history in front of her daughter or maybe she was embarrassed or didn't think it was important to mention. And you're absolutely right, she only has mild cognitive impairment, so we most definitely should talk to the patient alone without her daughter first. +4  
seagull  She has dementia. She doesn't have the capacity to determine her own care (23/20 MME). I feel the daughter should have the word on the care since Grandma likely doesn't have the capacity to understand her actions. +5  
sajaqua1  From what I remember, dementia is typically a combination of impaired memory *and* impaired thought processes. There is nothing to indicate that the patient has impaired thought processes, and the memory impairment is only mild. The patient can still reasonably said to be competent, and so her private information should be discussed with her alone. +12  
yotsubato  Elder care homes or elderly communities actually have a high rate of STDs. Turns out, when you put a bunch of divorced/widowed adults together in a community they have sex. +11  
yotsubato  Additionally, you should respect the privacy of a competent adult with "Mild memory" impairment. I know I could have mild memory impairment considering the crap I forget studying for step 1 +13  
drdoom  @seagull dementia ≠ absence of competence -- the two are separate concepts and have to be evaluated independently. see https://meshb.nlm.nih.gov/record/ui?ui=D003704 and https://meshb.nlm.nih.gov/record/ui?ui=D016743 +3  
wowo  also important to note, d) repeated tests is also incorrect as the microhemagglutination assay is a confirmatory treponemal test (along the same lines as FTA-ABS) https://www.uofmhealth.org/health-library/hw5839 +5  
sunshinesweetheart  also.... I think we can assume that "repeated tests" means repeat VRDL, not "additional tests to rule out false positives" +2  
imtiredofstudying  the entire point of this question is that when you see an STD in an unexpected demographic (children, elderly), THINK SEXUAL ABUSE +  


submitted by sattanki(71),
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

seoD oenayn ehav ayn iade on stih e?uqontis toughTh it asw A.LS

ankistruggles  I thought it was ALS too (and I think it still could be?) but my thought process was that a lower motor neuron lesion would be the more specific answer. +2  
sattanki  Yeah makes sense, just threw me off cause ALS is both lower and upper motor neuron problems. Corticospinal tract would have been a better answer if they described more upper motor neuron symptoms, but as you said, they only describe lower motor neuron symptoms. Thanks! +6  
mousie  Agree I thought ALS too but eliminated Peripheral nerves and LMN because I guess I thought they were the same thing ....??? Am I way off here or could someone maybe explain how they are different? Thanks! +1  
baconpies  peripheral nerves would include motor & sensory, whereas LMN would be just motor +15  
seagull  Also, a LMN damage wouldn't include both hand and LE unless it was somehow diffuse as in Guil-barre syndrome. It would likely be specific to part of a body. right??? +1  
charcot_bouchard  No. if it was a peri nerve it would be limited to a particular muscle or muscles. but since its lower motor neuron it is affecting more diffusely. Like u need to take down only few Lumbo sacral neuron to get lower extremity weakness. but if it was sciatic or CFN (peri nerve) it would be specific & symptom include Sensory. +1  
vulcania  I think it's ALS too. The correct answer choice here seems more based on specific wording: the answer choice "Corticospinal tract in the spinal cord" wouldn't explain the tongue symptoms, since tongue motor innervation doesn't involve the corticospinal tract or the spinal cord (it's corticobulbar tract). This is a situation of "BEST answer choice," not "only correct answer choice." +  


mousie  http://www.sparknotes.com/biology/cellreproduction/cellcycle/section3/page/2/ +3  
fahmed14  Cyclins help regulate cell cycle phases. They help with checkpoints before progression to the next phase of a cell cycle. Therefore the checkpoint before mitosis would be in G2 and probably where mitotic specific cyclins are synthesized +11  
artist90  https://en.wikipedia.org/wiki/Cyclin . 4 types of Cyclins and when they rise and fall. +2