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NBME 23 Answers

nbme23/Block 4/Question#45 (reveal difficulty score)
A 32-year-old man has a diastolic blood ...
Precapillary resistance 🔍 / 📺 / 🌳 / 📖
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 +46  upvote downvote
submitted by ferrero(48)
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A revy rsilami nusieotq I evah esne in nkQbsa lwli kas hyw a ittaenp wiht girth hetar ulaerif edos nto eoldepv daeem nda hte asnerw si ncideares iytamhpcl gidnar.ae I tgo siht esoiqtun nrwgo nlryioilag bucease I wsrnedae golna iths ilne of agrnneois but I hitnk ni sthi esac ti lal sha ot do wtih EEWHR hte xetar prusrsee is mnocgi .morf nI htsi unsqeoti het tp ahs iadolstci yenetisonphr so oyu anc nkthi autbo eth rpesuesr as mgcnoi ord"waf"r so ocrntnsciitg pirpcaellyar critsehpns acn tepevnr na reenscai in essrurpe ni the yarlacilp .ebd eHewrvo rof hgtri rahte freliau shti aextr luifd si ingcom form teh EPPITOOS cidntroei (akadcbrsw rfom eth trgih rtea)h and cntirtogsicn pcpryelaalri ictnrespsh nca od itohgnn no( pisotoep sdie of llcyaiarp eb)d - teh yonl wya ot epventr eadme si to ircesnae haylpicmt readan.ig

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seagull  The snueoiqt lrlecya leda su to itknh about csitOmo rsseurep yb tilangk aobtu irotenp nad iune.r I renwod woh naym pelpoe sude ahtt niel of nogeainsr l(eki m)sfly?e +20
mousie  raGte txoleinnp,aa I ecsho limhytapc inaagrde rfo eht mase sgroaienn smil(ira Q no feiefrtnd akb)n +9
sympathetikey  My roasgnein wsa cmuh ermo mcpissitli bmyea( oot es)impl utb in my m,ind isyclost BP si tderdienme yb idaaCcr uttpOu and ilascdoti BP si temeedinrd by s.eraetriol ofrereTh,e what esocm oefebr het liralycpa dan raugleste raescetisn? roeeitrsl.A ts'haT hwy I isda taht rpyeai-alpcrl aisceesrt.n +41
cr  eht mani fefdnircee ewntebe eth 2 scase is atht ni tihs ceas eht netatip ash hihg PB +1
link981  So ni reinrgnekadt ngulaega teh tseiuqno is yeesnalslit iaksgn ohw ghhi uperessr in eth aerrltia tymess si NTO metasrntitd ot hte vensuo msyset iwchh( is eerwh DEEMA lpsee)vod. tBu you okwn yteh heav ot add lal isht onif ot rty efousnc a ibsca rplcinpei nda kame uoy eoncsd eguss .fyrsoleu (Got ti nogwr by teh a)wy ebseuac of awth roefrer@ dais of bankQ ne.ouitqss +9
hello  eefro@rr wtah era ouy iknaltg abtu?o tcimypalh deaiagnr is het ongrw .n.rwa.es +1
hello  ko eenvr im.nd i gto i.t drha ot erudndasnt b/c it wsa a igb lobck fo e.ttx +2
asteroides  I nktih etyh amy eb ltkiang tuboa eht ygmionce napeocrmsoyt hmminca:es sl5ctwp3curligeftose?hi.jpmo/rN:fneg51bkvogw4br..iBob=t/h4tnK.//.4ni/nwo//yodarn" Icees laarteri ro nuoevs serpsreu alos snudiec niyeogcm inotnoitcrsc fo elrsoairet nad lcrriappyael irp,csentsh cwhhi eariss eralrroita scietensar (ehrtybe mmninzgiii the eienrasc in palacrily )rpuseers nad surceed hte ocarumsraicvl fceuars eaar aivealbal orf idluf .erc gehoxnFa mxlea,pe ucsbeae ulvaacrs thmsoo semluc ni tlreriaa nad lroataerri lsalw tcaotscnr ehnw pdoeexs ot adleveet arlcnaisrtuva rpr,sseseu hits meoinycg rpeeossn snreciase arapipyellrc tasircesen and oecrttps eaarcipilsl rfmo a iotctoncmna eisr ni herit aractuaisnvrl r.us"rseep +7
stsfyt  kmsae snee.s sotesmiem ew eus isnBi)lCCaaoodt(v + endnltoivaio EI)(AC ocomb ot lbcaaen eth srrpee,su nda tvreenp keaaelg dan d.eame +

I think they are referring to maintenance of GFR and blood pressure relationships. Ergo the mentioning of the renal function. The precapillary resistance is "glomerular" precapillary resistance, so if that increases then GFR remains the same => prevents leakage of proteins and albumin => less edema.

https://www.youtube.com/watch?v=IRZsniaCfVQ

+1/- peqmd(74)

this is the concept of blood flow autuoregulation at the tissue level in response to increasesd arterial pressure via arteiolar remodeling via smooth muscle hyperplasia ....

+/- msw(4)


 +5  upvote downvote
submitted by staph_aureusxx(9)
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allapcyrpier enisratsec = iesnicbrgd teh oaerile.str she' tog ilniamm poreitn in the nerui; and on m.aulnib hte eyk saw ganyip ntaitenot to teh dlboo su.peersr ePuerssr is eutgldare by eht ssrneiaect essselv as drbaos alscl it hihwc si hte irrloeates aak ypciaalrlrpe n.irestcase

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submitted by notadoctor(175)
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vIe' nebe nshirgeac for ym rueocs ofr sith ubt tn'ca emse ot ndif i.t ow,eHvre teh yaw I ttugohh otaub it was atth eaedm pheapns avi eht s.iiaplcrlae fI three is dsrnaeeic ciaeensrts via the eiayparlplcr nhcsierpts sa mcuh oblod onlwtud' eb albe to tge iont eht aaecrisil.lp ehT boldo uwldo atesdni gte hdtuens aiv nosaosemast to eht svei.n shTi atircle rofm msvocylpycgi.oho iaesplxn it a letlit ebtter: CV lohygoiP:sy Tueiss eEmad adn enGrlae Peilrsnpci fo risaprnyaTacll duliF ganehxcE

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 +1  upvote downvote
submitted by chagas14(1)
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eMbya eht oeqitnsu is igldnea twih het pneccot fo mgneicoy elraartoir siivcatnorontcso which is a toarehn -aieatmedn ahcsmnme.i eTh epr iallapcry trinshepc orttcanc in peosrnes ot a seari in B.P I ogt hte Q wrgno esbeauc I dicpek amtchylpi wofl. yThe loev to go for hte wat"h eles" lmteeen fo any ipcto. I oatncn ndif any nsareo ywh teh matlhpicy pooitn cdlou eb rgwno /:

tg/ioi5ks4sn.3hc.onwosc/wbt/.sbp/4=5vrowll?enctmrBN/hpKa:.i Cckhe eht rigufe 1.4 The girnaM of Sefaty gtAansi mEdae omanorFti – emdEa eatySf actsroF

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submitted by adong(144)
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nI daondtii ot whta sha raydael enbe sdia I nhkti an ttoirnpam ionpt in teh otiesnqu asw uartygoelr tmuesnstjda wchih tponis rome rdawtos riteaoralr .euoargnitl

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 +0  upvote downvote
submitted by usmleaspirant2020(9)
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oc3beptecida9.et5/:d2fc0/t/2sfnf7h5uf3dd/0bcod9ly220ddta997ee72.u2r1e0oe170660n0

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submitted by ninja3232(11)
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nW"he taelrira supserer a,flsl mgcyeion oten is crdeedu ni eas,lrotrie esgrianced rithe esaretsnci ot flwo nad nnagiitmnia iacalrlpy erssper.u Tseeh bntaoersvsio gsutesg hatt caailyplr esserrpu mya eb guaeerltd rvoe teh seam earng of eurrspse hegncsa orev hwhci lfow is dutleaeugtaro ni a egnvi no.rga eeIndd, romf eth relino:"ta

w/hw4gBocm3.hb.s/vnk/nwi5n./i.Kps:/5tltN4obo

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 +0  upvote downvote
submitted by hello(429)
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wyh is malpsa cotncio reseuspr ngwro?

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rainlad  I inthk i'ts ebasceu ew dowlu xpcete ot see esmo eomr oniaileuatnrib/urirmuap if het almspa oioctnc rspeuser ahd ernadcesi to soepceatmn +1



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submitted by ferrero(48)
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A yrve srmiali tuseinqo I heav seen in nkasQb liwl sak wyh a apnitet ihtw rhigt ather rfeilau oesd ton pdoeevl eemad nda hte swnaer si scnareedi lphyctmai iearadn.g I gto tsih oqustien wrong lyilnaiorg eabecsu I eendwrsa ognal hits lnie fo roniesnag btu I nkhti ni itsh scae ti all hsa to od ihwt RHWEE het xarte srereups si gmconi .romf nI iths nosiqteu eth tp ash coasditli tyrehoepsnin os you nac khtni uoabt hte purreess sa gnmico wd"oaf"rr os grtciontncis ippcralrayel chssprteni nca treevpn na aecrnesi in rerpsues ni hte ircallypa db.e ervoweH orf ghrit rteah urelifa tish aetrx iuldf is mogicn rmfo the ITPOSOPE ticoerind d(awkacsbr from het ghirt erhta) nad tgsitricnnco arprylacpile cithnrseps cna do itnhgon n(o eospoipt idse of yalicrapl d)be - eht lnoy yaw ot tverenp aedme is to eesicnar mplatyhic ega.rinad

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 -1  upvote downvote
submitted by usmleuser007(464)
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Atcori silotDcia srsr ueeP

  • iHgh RPT = ihhg PD
  • hHgi RH = hihg DP
  • ighH SV = ighh DP

Acirot ilctsoSy s rruePes

  • gHhi aCiylrtctiotn = high PS
  • gHhi SV = gihh PS
  • woL mnaCelpcio = ighh SP

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 -1  upvote downvote
submitted by spow(50)
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I saol khint ttha het potni begni maed hree is tubao aenm irlarate rspruese AP)(M, whihc is wath ougeyotruaaltr sstseym atuyalcl agcneh edsab on. uBaesce eh ash ceieansrd PAM du(e ot eadrsiecn ,BPD) eth slaeicirapl llwi citostncr to imaanint nntstcoa pre/feusrowls hugtrho eth liylaarpc de.b

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 -3  upvote downvote
submitted by divya(75)
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i dno't khnti oyu dnee ot inkth all that cm.hu oolk ta all het pintsoo nda kihnt fo waht hepsapn hnew thye es.r e,inaAc B, C, D dna F lal cna uesac aisnlitettri tau.e dBme renansiigc lepairprylca tacinesser tilfeiyedn d.nt'eos

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drzed  erascIedn cyhpamtli wflo wodul ont ceaus tniitaseilrt emaed. +1
123ojm  btu ti nde'ots say cirens"ae ni," it ujts ssya ourelargyt" asujsntmedt ni." +1



 -3  upvote downvote
submitted by usmleuser007(464)
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.1 riocAt ociDatlis sreesPur 1. hgHi RPT = ihgh D P 2. gHhi RH = high PD .3 gHih SV = hihg PD .2 irAoct tysSolci errussPe .1 hHgi nlyitarottCic = ghhi P S 2. High SV = ghhi P S 3. Low naiopClcme = ghih PS
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yex  :iciro/ccvr.o1ycltMougptpia/ysnMioot/h0s2hc/lm ihTs hepls ,owmoesh het irtsf artp bauto paalcrlyi suerpesr. +
usmlelol  'hastt eth xep t:arp: The evaagre lripclaya yrtcahsdiot erperssu si mednetrdie by talrirea adn eunvso seruesprs PA( adn V),P adn yb teh oatri of rlpocia-yasp-tlrtpoe tsinaseresc .VR(A/)R An rsaeicen ni erihet rtrileaa ro euvnso sepesurr llwi eercanis riclyapal ueerrsps; vowe,rhe a gvnie cgnaeh in AP si olny tauob fhfni-eot as tevecefif in ncgaighn PC sa eht asem loesubta ghaenc ni P.V euBcsae vuneso iencrseast is ylleitearv ,olw secgnha ni VP are iraledy ttsrdmitean ckab ot teh c,llyrapai dan eenyslvrco, ecebsua eilrarta enircsesta si alyrviltee ,hhig eachgns in PA rae loyopr dtteantmrsi drtmeaswon ot eht rplaila.yc +1



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