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Retired 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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submitted by ferrero(48)
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A evyr amsiirl tsinuoeq I vahe esen in ankQsb ilwl ask ywh a tinetap hwti trhgi etrah lfauire sode ton vdelope aeedm dan het asewrn si isnceaedr itpymlhac ridnaga.e I tgo isth seointqu grwon gialylirno ceaseub I darswene oglan hsit inel of groaisnne tub I hknit in tsih aces it lal ahs ot do with WEERH the erxat rrspeeus si cionmg mfor. nI iths enqsotui the tp sha acdislito nioestpnryeh os uyo anc hntki btoua eth pesrrues sa ingcmo orfr"adw" os tncirontgsic rlrpaacypile stipshcnre can vreptne na nerscaei in erssperu in teh ylpraaicl ed.b wvoerHe rfo gtirh treah riafeul this terxa ufild is ncgoim fmor teh OESOIPTP nrcdiotei (arsadcbkw mrof hte gitrh eathr) dan crgtconntisi clpeypilrara hetsirspnc acn od tnngoih (on piooespt iesd of raipcayll )ebd - het noyl awy ot peevtnr adeem is ot areisecn tamicphyl daegn.iar

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seagull  heT qiustoen erclaly lead us to tkihn buoat Ooiscmt esprrseu yb litkang outab itreopn dan eir.un I owndre ohw myan peolep edus htat ilne fo ireonnsag (ekil l?ym)fse +20
mousie  eGtra ainenolpx,ta I hsceo ialpctmhy egindraa rfo het smae nneisorga mli(rais Q on nrdfiefet abk)n +9
sympathetikey  yM oaisngnre saw hucm moer msicstpili abmey( too mpe)lis but in my mind, sstylico PB is erendtmied yb daCcrai utptuO nda coastiidl PB si dmeeretnid yb r.lirsoeeat r,efoehTer waht mesoc oerefb teh llacryipa dan tlraesgeu rescitase?n Aeroesilr.t as'tTh ywh I siad thta rrlecpplayia- siestancre. +41
cr  het mnai ndffeeicer neewtbe eht 2 csesa is that ni tihs scea hte ttienap has hhgi PB +1
link981  oS in ngitndraeker eganulag teh tiseuqon si enstiealyls gsanik hwo ihhg seprsreu ni the rierlaat ymests is ONT strtimaetdn ot het vnueso tesysm whihc( is ewehr EAMDE eoelvsp).d uBt yuo wonk hyte ahev to dda lla isth oifn ot ytr oesfnuc a basic eciipnrpl and meka oyu sncdeo segus rsuly.foe Gt(o it norgw by teh y)aw aebuces fo htaw eof@rrer siad fo baknQ uoqines.st +9
hello  e@rrerfo htwa rea ouy ilagnkt buta?o thcpiylam iaanrdeg is eth ogrwn s..arw.en +1
hello  ko rveen idnm. i tog .it rdha to aundsertdn bc/ it was a igb lbkoc of .ttex +2
asteroides  I nhtik tyeh aym be inklgta tuoba hte megyocin tocyearmspon ha:mecnmis co.tp.jfonorh4tc34gbkylw/5ii/ewv4hbo/om5?Kfpos.eltew/i:/rt/.gbnsg1B/Nuni.rn=cnre"e Isad rarlteai or svunoe pseeusrr loas inscdeu mencoyig itcotrinscno of leeratirso nda rlrapayliecp stpihsnr,ec hhwic seairs aaoirrretl esenistrac bt(ryeeh gnmimiiizn hte aneseirc in clrpiylaa sseprure) dna ceuesdr teh arluicvcrmsoa csuafre eara iavellbaa ofr fludi neaoceFxh. gr lm,xeeap eeabucs sclraavu ohsmto leucsm in rtraiale nda aleirotarr llwas cstatocrn wehn pdsoxee to eedevlat rlrucatiansav eseupsrr,s shti ymgoecni esernosp iesrsneca rlpyeralpica ricntseeas nad eorsttpc allicrpiase ofmr a ctcoaninmot eris in rteih vaisacralrnut eer"srs.pu +7
stsfyt  masek eses.n tomeesims we ues BnasoCo(l)vdiaiCt + notieanidolv C)(IEA bocmo ot laeacnb het reps,rseu dan npeevtr eagealk dan .aedme +

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

+2/- peqmd(75)

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)


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submitted by staph_aureusxx(9)
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playrilprcea stniacesre = csdgbinier teh leos.terair se'h got maiinlm ontirep ni eht ernu;i and no mi.anblu eth kye asw pyniag ttnoianet ot hte odblo serp.rues Preeruss is tleguarde yb the retnsaeisc vslssee as rsobda ascll ti cwhhi si hte rrseaoltie kaa acylreraplip tnaesi.serc

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submitted by notadoctor(175)
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eIv' eben ecsngahri orf my ucsreo ofr isht tub n'cat eesm to dfin .ti verweo,H teh wya I thohugt tabuo it saw tath emdea shppena iva hte rialelai.pcs fI rtehe is ecdisanre ecrasetins iva teh arraelyplcip tshencispr as much bdloo ndultwo' be beal ot egt into eht .clprisieala Teh blodo luodw isatned egt dntushe via smesaonoats to teh nvise. shTi airclet rmof posmcl.govyhycoi niexlsap it a iltlet reet:bt VC isPyghoy:lo siseuT Eamed dna aneGrel criinsPlpe of alyasprcTrlina duiFl gxanecEh

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submitted by chagas14(1)
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Mbaye hte sounteiq si igedanl hiwt eht cponcte fo noymcgei erilatrroa iansiorvncoottsc hihcw si a ntheroa eaaetdn-mi msncea.imh eTh pre aialclryp icsphetnr catontcr ni opnresse to a iersa in .BP I otg the Q onwgr ecauesb I kdeipc mcaihytpl wo.lf hyeT vleo to og rof the ah"tw s"ele tenlmee of yan o.tcip I otancn ifnd nya seonra why eth ylmhctaip nootpi udlco be ngowr :/

mhiiat/swiv/oew5k=3/sscnr.s4..N/lBo/p?cK:wlbonhtpnrbtc4o5g.kch Ce hte egfuri 1.4 Teh iManrg fo tayefS ngsiAat amdEe Fiaotrmon – Eadme yfaSte oratFsc

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submitted by adong(144)
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nI odatdini to awht hsa dyealra eebn idas I tknih an rtaipnmot noitp in het setioqun saw oregtruyal dmtunasjtes iwchh intspo mroe drwoats oilrrareat lueno.giatr

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submitted by usmleaspirant2020(9)
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dtlae2ce/22fe0//39.7ha23d0doe7ncd65deffp:12tti7e2.duf9dtbo10ec9s0uo006nrc5by/097

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submitted by ninja3232(11)
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hWne" ieaalrtr erssurep ,alsfl omcgieny noet si uedcerd ni aelsor,irte iacdgeenrs itreh ecasesntir to flwo and iaitimnanng clylaipra sp.rsuree eTesh avsbioeorstn esgugst ahtt aprcialyl presseur amy eb grtlaueed rveo hte smae aerng fo rpesrseu snhacge rveo chiwh folw is luraeetodugat ni a ivgen ong.ra enedd,I rfom eht n:e"tlaoir

.t/np.s/c4v4/oBbl5in3Kth.b/wN:5si.k/nhgmwowo

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submitted by hello(429)
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hwy is lamasp tocncoi ssrrpuee ?wrogn

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rainlad  I knhit 'ist abucese ew uodwl ptexce to ese mose moer uumoetabiurii/ranaplinr if eth mpaasl noccoit rrsepesu adh adsnrecei ot scatonepem +1



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submitted by ferrero(48)
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A veyr ilmsrai qnueiost I eahv esen in Qbsnak iwll aks yhw a tptiean ihwt htrig haret elfraiu odes ton delvpeo aeemd nda eth arwesn si iedneasrc tlyipmcha ndaaerig. I got this qoiuntes rngow gilyranlio eueascb I edaesnwr ngaol thsi line fo iaergonns ubt I thkin ni tihs ecsa ti lla ahs ot do with EEHRW the extra rsepesru si ngcmoi rofm. nI hits setonuqi hte tp sha csdloiita eitenryoshpn os uoy can ithkn atbou the eserprsu as nogmci ra"wodf"r so ntcositnigcr pcriylalaerp issehrtpnc anc evernpt an ciesnaer ni repssuer in the pylaiaclr edb. evewHor orf ighrt etahr auielfr hits retax dflui is ocgimn omrf the POTPEIOS dnioitecr krswbca(ad fmro het ghitr r)haet adn icscriognntt pelrapcralyi iternhpscs acn od gnothni (no pooestpi side fo icayrplla )dbe - hte olyn way to erevpnt amdee si to eeicsanr pylaicmht gaediran.

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 -1  upvote downvote
submitted by usmleuser007(464)
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Aicort ctiolsDai rsees rPu

  • ihHg PTR = hgih PD
  • hiHg HR = ihgh PD
  • hHig SV = ihgh DP

ocrAit yltciSos s ePrersu

  • ghHi itilntrtCaocy = ghih PS
  • High VS = hghi SP
  • oLw ieloaCcnmp = ighh PS

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 -1  upvote downvote
submitted by spow(50)
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I olas thikn hatt het inotp inbeg mead reeh is utbao nema iarltear rssupere M,()PA wihch is hwta tuolageytruaro tmsysse acllayut cnehag deasb .on ueeasBc he ahs ncesdaeir PMA ud(e ot dceisnrae DB)P, teh larlepsicia wlil nirccstot ot iatnaimn tasnnoct lspfeu/rrowes rgohhut hte laiarlycp .deb

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 -3  upvote downvote
submitted by divya(75)
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i d'otn tnhik uoy eden ot nkith lla that muc.h oolk ta lal the spnotio dna inkht fo wath heppsna wnhe yhte eea.Ans ri,c ,B ,C D dan F all can caeus titrneatiisl Bu.tae dem ncsireaign eilaprralcpy tnrcseieas elfideniyt t.sd'eon

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drzed  esendracI lmahcitpy oflw uwodl not eaucs iiteniratslt a.dmee +1
123ojm  tub it osde'nt yas saeenr"ci "ni, it tsju ayss aegl"rtuoyr udssjaemntt .ni" +1



 -3  upvote downvote
submitted by usmleuser007(464)
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1. rctiAo sicaitoDl eurrsPes .1 ihHg RTP = hhig DP .2 hgiH RH = ihhg PD .3 hgHi SV = gihh DP .2 tcAior ysStocil eursserP 1. Hghi rytiiolCatcnt = ghhi P S .2 iHgh SV = ighh S P 3. wLo implaCcneo = gihh SP
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yex  oMouytrhcltoympth1vsa2picgn/iic/M0si./ococl/:r sihT psleh s,oomehw het itrfs atrp atubo ayplraicl erupse.sr +
usmlelol  tsh'at eht pex :pa:tr hTe argvaee ylraplica ttihrasocyd esupsrre is mneteedird by rraliate nda vunoes usesprsre AP( adn )PV, dan by eth iarot of t-pyalo-ecarsltpipor censtaerssi AVRR)/.( An ensecari in iteher aarrltei ro vnesou rpussree iwll iserance alrciapyl ersrp;seu erevwho, a envgi ceahgn ni PA si noly tuboa htffo-nie sa eievefcft in gcangnhi CP sa the asem ubsaetlo ecghan ni PV. eseaBcu nevsuo isnertscea is llyviaeetr w,lo nghecsa in PV ear edyilra terdmatntsi bcka to the lcrapa,iyl dan loneevc,sry eeausbc liraatre siscreanet si yiveertlal ghhi, encgash in AP rea pooryl sarnmtteidt tawrdmosne to the pr.icllaya +1



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