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NBME 21 Answers

nbme21/Block 2/Question#5 (reveal difficulty score)
A 2-week-old male newborn has a patent ductus ...
Higher than normal left ventricular cardiac output 🔍 / 📺 / 🌳 / 📖
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 +9  upvote downvote
submitted by ∗d_holles(218)
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Hsre'e na cexeltlen giema morf MSOASB fi peploe are giavnh tfldyiuicf ziialuvgsni tshi: omtsmr/pgRhmt./cua:Vhm/Q/Wi

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lovebug  revy pelhful! !hnkast +



 +6  upvote downvote
submitted by jotajota94(14)
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PDA lswfo frmo rtaoa to ynuramolp eyrrat csreaindeg frlee.rrodef ehaotaT radcaci tuuotp sinsrecea

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seagull  sdnteo dpo-erla aslo ceeedsar hwhic duwol rdop the ?..CO +
hungrybox  gllsue@a I hnkit ti ludow ecsaneir rplaoed /cb eomr dbolo is igogn itno eth nrmayluop steaierr -> gslun -> lnyuparmo ivsen >- lunetyleva omer dolbo in left clmerit/erutanvi -> inc ordaepl +63



 +6  upvote downvote
submitted by heavy_neighborhood(6)
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DPA lsfwo mrfo eth arAot =&=;gt luyPmnoar ire,sarte by spgnsai eht RV os hetre si on aehgnc ni O2 ni hte R.V

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felxordigitorum  hTe ts"eal" mfor het traao uindgr oiatelds sqrieeur sacidener aacricd totpuu ot smoea.ntpce xlertEmey pmtrrueae nnaitfs ehav iidemlt iytbali ot neearcsi kertos vmeolu dna uths sue neecsirad earht tear to aercsnei adircac .tuutop /m.Kvwn/3/wpln.niosBk54oN.c0th:/7h/8ibs.bogwt +2



 +2  upvote downvote
submitted by ∗didelphus(70)
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A DPA eiatssyelnl eeascrt a lgfow-hhi heatr eifralu insouitat in the a.ybb enciS a orntafci of teh LV utoupt is rteuernd owithut rghienac eth yodb, ni doerr ot inimtnaa a olmnar OC ot hte bdyo teh tefl icrlentev must pmup a hhiger melvu.o ihsT dluow laos ausec hrghie anht mloanr lyuonarmp pacyliral l.ofw

I nkiht oesm fo the otehr ntosqeiu rae ngtgite at eht idae taht we ondt' onwk het cnedoiitr of wlof fro uers. If het lfwo saw gst-&ant,;-aoglur teh mscistye OP2 wodlu eb narolm adn VR 2PO ghhi. utB if tis' top,sioep het teppioos oduwl be ue.rt

iceSn sAPD era daamntenii by G2PE, that owdul tuotnrcebi ot a lwo ileprrpeha usvlrcaa inesersac.t

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didelphus  era*tohn eurs nedot atth hits 'ulodwtn camitp RV xyeogn secbaeu het blodo si dedda to het ayumnoplr tey,rra hichw ahs txeedi teh R.V +3



 +0  upvote downvote
submitted by moneysacs(3)
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yWh is soed a PDA rfate htirb usertl ni gr"hihe athn olarnm etlf rvunectirla aracdci tutpuo" vore ardeecsin rhg"it etvrrulinac "2OP? Does hte ulmp eytrar tg-;&- aorat ushnt mbeceo edveserr refta tbi,hr os egrhhi xoygen aaotr oodbl wdluo olfw ckab ntoi eht rihgt recevn?itl I gte ttah oerm oobdl loudw eb euppdm to eht lfet cltnev,ier egulinstr ni H/VL,HRV ubt ndto' dtnusneard eth O2 it.b

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usmleuser007  )1 ehrghi hnta nrlmoa CO /cb dbolo si htusned mfro oraat to ylpnromau eetrrisa. ihTs dloob is dadde to het oulvme that aws umeppd toni eth onpuylmra esarteri yb eht .VR Now wenh teh dyxeenatog dolob nrurset to eht LA & ,VL hte O2 ontecnt wudol eb grereta t/d erhhgi obodl .muvloe oslA fro ttha smae eorsan mero lbood is trenngiur to hte VL d/t( VL ulvoem sulp ornacfti of VR ovl.uem) sihT esinadcer eht tR>.- O Chi - g teLf ssnhtu avhe leta aicynoss cb/ teh VR si uinhgsp atsaign het xseecs rrpeeuss reteanged yb hte V.L hiTs eldsa to snreEnemegi oSmneyrd as RV slaereng nda uepshs itsagan hte reuesrsp mofr hte VL in hte .APD uThs stifhgni Left ot right ot grtih to fetL and huts teh ltea acssoyin +2
temmy  heT tmanyao is muoaaryro-ltpan rymaaopnlrure-ty estlinf-ve filue-matrt liitnocrceeevtN that the dloob did not come orascs het tghir eahtr at all nda eeucsba fo hte TEFL OT RHITG nutsh fo eth AD,P we add rmoe umleov ot teh LFTE .iesd nceeH the sdnaecier eftl avnlurtecir ottpuu +2



 +0  upvote downvote
submitted by ∗masonkingcobra(408)
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iknL

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necrotizingfasciitis  Gngoi fof of eth cemosnmt eoeplp ahev tedosp baoev & ankid ngingibr signht PA eto gD:hter sowlf fmro raoat ot aplmrnouy rie,retsa hcwhi evrseers eafrt htbri. iTsh easmn -detyeaxndgeo loobd fwol fmor het pouymalrn tirseear ot eth otraa & lses uelovm negbi nste to het FL eids fo eht ahe.rt s hTi slstuer ni a aeeerscdd dalforeat aesuceb htere si less obldo iglofwn omfr het ugsnl to er-fill hte LF rncet,veli & teh areht si siltl mnuipgp hitw hte seam orfec as ,oreebf os hte smae euomlv fo olobd is iavnlg,e utb sels in riegetnn hte LF eisd of teh r . mhrte a oF ,here ouy seu CO = SV x S HRV = deaplor - feaodtlra ihwc(h is rsedcedae due to eth A siP hT)D stlusre ni VS eibng alregr hatn ,rlmnao os wneh uyo pulg that iont OC = SV x HR ouy gte a herihg eburnm fro acaricd t.optuu +
didelphus  ehT cduuts etuisrosra swolf mrof PA --> rtaoa in ruote to yssabp eht ugn,ls hwihc veha eyxlemter gihh tcnseaisre to .owfl isTh eresvres efatr htirb ude to a podr ni GPE2 h(ihcw asw sedlppui by eht taa)lnepc dan aisreenc ni ditefsed-l ymeticss cet.sniresa So a APD yiplatlcy fwlso aorta >-- PA nsimsu(ga reteh rea on ohetr edcfe.)st +



 +0  upvote downvote
submitted by jandj19(0)
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hTis is a yver loco ntcpoec naepdeilx in hte Raipd wieevR ylpgoahot ,obko eagp .572

e-sidtLfde to idserdt-hig hreat sshnut surtels ni lvmueo oleadrvo ni the irthg ised of hte ar,hte hiwhc ecirasnse VL ovueml rp)a(oeld deu ot omre bodol nrurenigt omfr het grhti rtaeh to eth eltf het.ra An erenicas in LV oepaldr is qaule erom ccridaa pttuou and moer wokr for hte th.era etLra in lefi that wlli elda to na cciecertn yept fo LHV wthi easdeecr rccaaid uttu,po ynrpalomu yeenrsontphi adn a crtniceonc RVH edu to ihgh daoftlear htta teh irthg traeh sha to upmp sngtaa.i

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 -1  upvote downvote
submitted by djinn(6)
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wLo fadeolart g&;t ghhi OC

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 -2  upvote downvote
submitted by ∗hello(429)
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Tsih si eht laucta tcrreoc laexaniont:p

APD euassc lbdoo ot wfol mfro niecdgensd aoart to ettnap suctdu tiraesrosu toin maouprlyn uorctnciali --t"lthg(tf)o"eri

heT "leats" ofrm eth arato rnidug tdsoelai reeqrsui nicsrdeea adcacri ptoutu to tenmspoace to elrdvei qaduetea toamun of obldo ot etsr of dbyo

reu:oSc kvw5pi/to.wnh3.wtblKiobmhN8/7.nsg/c.s4/:o0/nB

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fkstpashls  s'It L to R +2



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