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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 yevr irsalim uiteqson I evah nsee ni nakbQs llwi kas yhw a titpean thiw thgir treha uafelir deso tno loveedp emade dna eth nawrse is seaeincrd aihcpmtly nae.iragd I ogt shit eostqiun rwngo rilnigalyo sbeecau I eaendrsw gnoal itsh nlei fo isrnogane but I hnkit ni thsi csea ti lla has to od htiw WEREH eth rexta epresrus is cmogin omfr. nI tsih tseuoqin hte pt hsa icasiodtl eyosthpeirnn os oyu nca ihknt atbou teh rpssereu sa mcinog wr"adof"r os toicgncisnrt rcapelrlpiya npcrtesihs cna evrnpet an aienrsec ni eupresrs in hte liyaplcar bed. rveHowe orf ghrti rthae eailrfu shit axret fliud is gcmnoi ofrm eth OIESOTPP nidoreitc sbackw(ard ormf the rtihg rhe)ta adn cnnrticosgti reypprcaaill peirtnhscs nca do ntnghio o(n ietpospo side fo acaryilpl )edb - het lyon ywa to tneprev emeda is ot ansercie tlhipyacm ingeraa.d

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seagull  hTe tnqoeusi lecaylr aled us to tikhn utbao Osmitoc erepssur yb gtanlki btoua trnpeio nda neuri. I enrwod owh many eeplpo edus atth ilne of sogrniena (ilek sy?fle)m +20
mousie  Gtrae xlean,otinap I csoeh tcyihmpal igeanard fro teh mase angonesir (slriaim Q no fndieertf bk)na +9
sympathetikey  yM gaonniser was much reom smipictsil my(bae oot pms)ile ubt ni ym n,mid oyicstsl BP is nditeeedmr by iraCadc tpuOut dan sodtiaicl BP is emdeientdr by tareesiorl. efeehorr,T what ocesm eeforb het ycllaiapr nad teuslearg ecensast?ri seAi.reltor shtT'a yhw I sdia ahtt plirlary-eacp sneat.ercsi +41
cr  hte main ecfdeirnef eewnbet hte 2 aessc si atht in this seac teh pntitae hsa hihg BP +1
link981  So ni agrrineknedt eggalanu hte oeitnqus si sltynelasie gkaisn how ihgh ereusrsp in eth lriaeatr eystsm is NTO dtestanmrti ot eth vunose smesty h(hiwc si erwhe MDEEA lvdoe)s.ep tuB oyu wkno ehty veah ot dad all sith inof ot try cufeosn a acsib pcenirpil dan amke uyo nodsce sguse uyerlsf.o Got( it gwonr by eth wya) cbseuea of awth erfor@er adis fo kbnaQ tnuso.esiq +9
hello  rerfo@re atwh rea oyu tialkgn o?uabt pycalthim engrdaai si hte gnrwo nsa.ew.r. +1
hello  ok nevre d.imn i got .it radh ot natddnrues /cb ti wsa a big lckob fo tte.x +2
asteroides  I nhkit yhte mya eb ikagnlt tubao eth mgoenicy nocptyseamro hsmic:aemn c.twgrentr:5wK/k.t?gBolt=h4f/pmieor//3hy1l.isjsgivonnb4icNpon5/foe//obw..bu4e esncrI"ad airtlare ro svoune sruperes sloa ndsecui oegcnimy icoroctntsin of arrtseileo dna lparyicarpel hstprn,scei wihhc asseri rartroliae atessicrne etery(bh igzmniniim the irsecnea ni rlpyaical e)rpuress dna rdsueec eht lscaacrourmiv fcsuear eaar eblaaivla rfo udifl e hxcaeF.rgno eplmxa,e useaebc araculsv otomhs cumles ni rlreatia adn iraratreol wasll ttrccason newh pexdeos to tdeaelve vtrcaursanlai rspesrseu, hist iegyconm rsepseon raecinsse eprilpacraly naeestcris nad osettprc isiclaeprla fmor a ccatmontnio rsie ni trehi usialvtrnarca s"rsperu.e +7
stsfyt  eamsk ness.e emmoistes we seu t(l)CCaosnBdioiva + oviaeiondltn (ECIA) mcboo ot elbcana teh pur,reess nad rntpeev lkgaeea nad .aedem +

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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pyaircelrpal enistcrase = rbdnigicse het irlaroe.est hs'e got iimmlna pnreiot ni eth reinu; dna no lbnima.u teh eky swa yanpgi aeinottnt to eht olobd rsseerp.u Pssrreeu is agetderlu yb eth natersesic sveesls as obasdr casll ti whhci is eth liesarteor aak papcelriylar n.riassecte

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submitted by notadoctor(175)
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ve'I been gcrhisena orf my rucoes rfo tish but ac'tn seem to fnid ti. wev,eHor het ayw I gthothu obtau ti wsa thta mdeae psnahpe aiv teh eil.crslpaia fI eehtr is cearedsni isacertens iva eht lpaprelyrcia stsneirchp sa chum dolbo tulw'dno be lbae ot tge itno the acspi.elrial ehT dlobo uoldw neatids egt nteudsh avi tseososanam ot the .neivs Tsih eclarti fmor y.myosopgilhcovc sxleainp it a elltti er:tbet VC oyligohPy:s ieTsus edmEa nad enelarG iPiplcrsne of Tinrlapacarysl duilF Eechagnx

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submitted by chagas14(1)
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Mbaye hte eqsuntoi si gleidna hiwt hte ccpneto of cionemgy taoearirrl soaioiorctnstvnc hciwh is a ehnatro n-eaetamdi mamce.shin ehT rpe lciryalpa cnhsepitr tntcaroc in soesnrep to a asrei in .BP I tgo teh Q nwgro ebacues I dcpike chaytipml lwfo. They olve to og ofr eht t"ahw l"see eltemne fo yna oiptc. I connat nifd yan eoasnr hyw the clyhipmat tnoiop cuold be wrgno /:

crtgtsr/oiwh/l.Ko.sep?n/lmno.si34sN/aB=w5n:.bophcc4w5ibt/vkce Ckh eht ufgier .14 ehT Mgirna fo taeSfy snatiAg Eaedm nomiFraot – Emade ytSeaf ctaFsor

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submitted by adong(144)
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nI iadtoidn ot awht ash adelary nebe adsi I nikht na potirnmta ipotn in eth ntqisueo asw trelorguya jemudattnss whhic oinpts rmeo wortasd oaariterlr agleori.unt

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submitted by usmleaspirant2020(9)
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boa7/y72r9h0edn002060dbdtene/ce/7/t3p9f2o71:dlt5d0tc92ce19fe0u52sido263f.e.cfadu

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submitted by ninja3232(11)
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n"Weh liaeatrr ruesspre fsla,l ncyieomg onte si edrcedu ni rstliaeeo,r radsnegeci trihe eitsaersnc to lwfo dan anaiigmtnin irallpayc r.userpse heTse sobainosvret tsusgeg ttha paalycrli useersrp aym eb agldeetur vore eth esma agner fo reeurssp hasgcne eovr hhwic fowl si trdloueugatea in a ginve a.ngro edeIn,d rmof teh ar"otln:ie

.h:i/wv5mcB.wNoo/o5/s//wsn3b4K4lkpitngn.ht.b

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submitted by hello(429)
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yhw is aampls iocotnc eruerssp wngro?

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rainlad  I ithkn 'its euesbca we lduow pceext ot ees soem mero iuuaairit/bmnuorearpnli fi the pmlasa otoccni esusrepr ahd sedarienc ot smctepnaoe +1


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submitted by ferrero(48)
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A eryv miliras esiounqt I heva snee in skQban lwli ask wyh a pntieat ihtw ghtir eahrt uelrfia deso not oedpvel demea dan eth swearn si nsiadeecr ytmhlipca idn.garae I ogt tshi uinesoqt gowrn llagiorniy bsceuea I earendsw olgna htis ilen of gosnriaen tbu I knhti ni isth ecsa it all hsa ot od whit RHWEE eht atxer rsspuere is iomcng mr.fo In tshi etsuqino teh pt sha dalisicot etoniyshernp os uoy acn itknh tuboa eht rpreuses as icmong rowad"r"f os tnrgsictcnoi lprpailycrea ercnistpsh anc nvrpete na inrecsea in rsupeers ni het ylparacil b.ed vHrweeo fro tihrg erhat arfluie isth xtear fuild is ogcnmi rmof teh OPTIEOSP cnitiored awsrk(adbc ofrm the trghi teh)ra nda crcigtnntois playlerpiarc pstcshiren acn do gniothn (on tpispooe sdei fo aailplcry )bed - eht noly yaw to pvertne maede si ot enisarce hcilptamy arina.gde

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submitted by usmleuser007(464)
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otcAri Dosiiltac erresP su

  • higH TRP = ihhg DP
  • hgiH RH = gihh PD
  • Hihg SV = ighh DP

irocAt ySsitloc rPrseseu

  • Hghi tiicrCotaltny = ghhi PS
  • Hhig VS = hhgi SP
  • wLo npoleCcima = hhig SP

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submitted by spow(50)
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I saol itknh that the otnpi nbegi dmea rhee si uaobt amne aiarletr esrepurs ,(P)MA hchiw si thwa auetyootrgrual ssesmty uylatcla gencha sebda o.n Bcseuae eh ash sadeernci AMP deu( to isnrdecea ,)DPB het cepailrlias illw tointscrc to iatnnami oatnstcn fuse/rersolwp ugtohrh het lalraiypc e.bd

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submitted by divya(75)
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i ndto' nkthi oyu ened ot khint lal taht m.cuh oklo ta all eht otoinps dna tnkih of atwh spnepah wehn htye en rsc.,eaAi ,B ,C D dna F lla acn eaucs ietttiialrsn uBd .atmee igciasnner rylacariplep rtsnisaeec fydltiieen ns.to'de

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drzed  resaIncde cpyimahtl flwo dwulo tno aecus rlniisttaite m.eade +1
123ojm  utb ti net'sod say eisnea"cr ,in" ti jstu sysa ortlaure"gy tsesnadumtj i".n +1


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submitted by usmleuser007(464)
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.1 Atiroc lscotDiia urPseers .1 giHh RTP = ghhi DP 2. Hihg RH = hghi DP 3. hgiH SV = gihh PD 2. triAco stoySlci sreuersP .1 gHhi anliottiCtcry = hhig PS 2. hgHi SV = hihg PS 3. wLo pCieolncma = hgih PS
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yex  uiococa0Mi1h/i:vt.hli/Mlosrptyn2tccop/gyorcs/m ihTs plseh mewoos,h hte strfi rapt uobat illrcypaa re.pessur +
usmlelol  stt'ah eth exp ar:p:t heT raevage ayliplcar hdacoitrtsy psrseure is entemiderd yb rareilta nda unvseo prssseuer PA( nda P,V) nda by eth otiar of llrpo-tpeisaptraoyc- cientrsessa /()RA.VR nA nicasree ni hriete rraitlae or suveon sspruree will iceanser ypcalialr esu;sperr ,vroweeh a vnieg ehgnca in PA si nloy utoab f-entfhoi as tvfeiecfe in gchinnag CP as hte sema aboestlu hngcae in .PV Bcaeues vnesou caetenssir si eelravytil ,low gsaechn in PV era earldyi trnttemidsa kacb to teh ,lracialyp dna e,coerynvsl beseuac rraieatl trneascesi si itleeyrlva ,gihh haecsng ni AP rae lopyor estdmratnit dsenrawmot ot eth .ricapalyl +1


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