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Retired 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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ereHs' an eltnxeecl amgie omrf SAOSMB if eolppe ear hiagnv yuiltciffd nzisavilgui th:si tVWhmRc/Q:imh/ruatgo/s/pmm.

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lovebug  eryv pel!lhuf st!knha +



 +6  upvote downvote
submitted by jotajota94(14)
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DPA swflo form taaro ot mpnaurlyo artrye rsnecgeiad tere.elrheraoa odffT diccraa uottpu caesisrne

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seagull  ndetso lo-preda lsao edesaerc ciwhh wlodu pdor eht C..?O +
hungrybox  ul@elags I ihntk it wulod necaisre prdoael c/b eorm bodol si ngigo ntio hte almnyupor treiresa >- ulgsn -> mponalruy vnies -> ulnelyteav mroe olbdo in tfel nmra/tieilcvuert >- cni orldaep +63



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submitted by heavy_neighborhood(6)
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ADP wlfso morf the atAor g;t&== ornPayuml esatrei,r yb spgsnia eht RV so rheet is no ghncae in O2 ni teh RV.

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felxordigitorum  heT "s"tlea mrfo eth rtaao nruigd dtseloia uierserq eiscadrne rcdaica uputto ot ceaeptsmon. lxytemEre tareuprme sntnfai ehav lmetidi ilityab to sniecear tksore vmlueo nad utsh eus ndesiecar rhaet reat to snceeari aicrcad uout.tp h//sc/w5lKm0on.o:gni4bi/p./wnbv8sothwB..tN73k +2



 +2  upvote downvote
submitted by didelphus(70)
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A ADP eallsysneti tsraeec a fgwilh-oh haret friaeul nistotuai ni the yb.ba cSnie a croiaftn of teh LV totpuu is tderuren tithwuo grhiaenc eht ,dybo ni oerdr ot itnmnaia a lonrma CO ot teh odby the eftl rleevicnt mstu pupm a ireghh umlev.o ihTs uodlw olsa aceus irhghe tnha lorman anmrpyluo cilaraply .ofwl

I nhikt seom of hte eothr qsitnueo era ngtiegt ta eth iade htta we dto'n nkwo het ciiotnedr of wfol ofr seur. fI eht lwof wsa t-,agrtunos&-g;la the yctseims OP2 uwldo eb almnor nad VR PO2 ghhi. uBt fi sit' ,epooitps the tpesoipo ulwdo be rtu.e

eSicn DsPA ear imniaatden yb P2E,G htat duwlo ttbnirucoe ot a wol eplprreiah avuscral te.ecsanrsi

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didelphus  tona*rhe suer ontde tath this ouwdltn' itmapc VR yngoxe seacueb the dbolo si dadde ot the nlruaypom atr,rye cihwh ahs itxede teh RV. +3



 +0  upvote downvote
submitted by moneysacs(3)
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yWh si does a DAP ftear bhrit rtsule ni "giherh hnat monarl tfel auncvreltri caicdar "otuupt rove icserdnea "rhigt trulivenarc "P2?O sDoe eht mulp tyarer -&t;g- aorta shunt eebcom edrreesv aetfr irht,b os heihgr gxeony raota dolbo uwdlo fowl bcak tnio het htigr lc?ervteni I etg tath emor obdlo louwd eb dpmpue ot eth ftel velte,rnic unirltegs ni /LHVVHR, utb not'd ndnsaudret the 2O b.ti

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usmleuser007  )1 righhe nhat nalrom CO /cb doolb si tusenhd fmro aator to rmlopyaun .eeirrast iTsh oodbl is dddae to hte euvoml htta wsa mpdpue inot the rnyuomlap areeisrt by teh R.V woN hwne hte edayntgoex oodlb surrent ot teh AL & ,LV eht 2O cnotetn ldowu eb eatgrre d/t ehgrhi ooldb uo.vmel oAsl fro taht emsa aernos mreo olobd is teirnugnr to teh LV td(/ VL lveomu ulps rnctaiof fo VR .om)ulve Tish nersdciea het .t -g RC>-ihO tLfe shnstu aevh etal nycoaiss bc/ eth RV si uigpnhs isatagn hte seecsx respresu etraegnde yb eth LV. ishT sdlea ot eErngneeims noeySrmd as VR lsangeer dan shpues tsgaian hte urepsres romf the VL in teh D.PA hTus hfstniig eftL ot tihgr to gtrhi ot fteL nad tush eht tael csansoyi +2
temmy  heT ymtaano is ra-uratoyoapmln -ryareromtulapyn ftnlv-eesi rueaflimtt- ecoevNlirnectit htta het lobdo ddi ont mceo asoscr het rgith herat ta lla dna euacsbe fo hte TLFE TO THIRG ntush of hte ,APD ew add omre meovul ot eth LFTE ies.d necHe eht cersenaid tlef tarcruevlni uptuto +2



 +0  upvote downvote
submitted by masonkingcobra(408)
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kiLn

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necrotizingfasciitis  Gnigo off fo eht mtecsmno epelpo have dotpes ebvoa & iakdn grgibnin sghnit g:tePo erhDA t wlsfo orfm aorat to ouynlprma sa,eeitrr ihchw eerrsves fetar .ibrth iThs eamsn ytxeo-eeddgna bolod flow rofm the pnaomruly ersitaer to the atrao & lsse vloemu iengb etns to the LF dsie fo eth rehat. T is h sruelts in a eaeddrsce aetfldaro eubeacs rhete is sles dbool lwifogn omfr eht lnusg to -illefr eth LF inre,vctel & hte treha si lislt ignppmu wiht the meas eofcr as efore,b os eht asem evmlou of odolb si engavil, tub lses in ngienert het FL sdei of the r mF.or aeht e,erh ouy ues CO = VS x SHRV = aopelrd - lradaofte (hhcwi is desearcde ude ot hte TPisA )hD reustsl in VS ngibe garrel ahtn mnol,ar os nweh you lupg that oint OC = VS x RH ouy get a hergih ebnmru fro ccadira ut.otpu +
didelphus  heT tuscdu orrtisseau foswl form PA ->- aotra in treou ot psysba hte nsgu,l iwchh avhe ereyxetml hihg rnsecieast ot .lofw sThi srvrseee artfe ibrth edu ot a rpod ni GEP2 cwhh(i wsa plsedupi by het anltapec) adn esrniaec ni idde-eltsf tcimsesy naetiscer.s So a ADP llatciyyp wolfs taora ->- PA ig(mnuass ehert are on torhe fdet)es.c +



 +0  upvote downvote
submitted by jandj19(0)
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sThi is a revy oloc ceonpct lxeineapd in eht pdRai eRevwi hotplyago ookb, eagp .527

desdeLf-ti ot rdigte-sidh ehart hnsuts tuelrss ni veolum vlaedoor ni the htgri dsie fo het teah,r iwhhc erseicsna LV emoluv )p(drloea edu to more oolbd rierntugn omfr the ithgr htera ot the etfl hta.er nA csrieena in LV aorpedl si lqeua erom aaidcrc puotut nad orem okrw orf eht her.ta eartL in iefl tath wlli lead ot an eeitrcncc ytep of HVL tiwh cadrseee ciacdar uo,ptut oyanrulpm rynnieehsotp nda a ccrcteinon VRH ued to hgih rfloedata that the tighr hraet sha to mupp tnaisg.a

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 -1  upvote downvote
submitted by djinn(6)
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oLw oflrdtaae t&g; hhgi CO

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 -2  upvote downvote
submitted by hello(429)
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isTh is teh acaltu etrrcoc x:npotialean

PDA eaussc dobol ot flwo rmfo nednsicged aroat ot apentt cdtusu utosiserra onti ayrnopmlu tlcnarcioiu t"-gt"ohterlf)i-(

ehT as"le"t mrfo het oaart duirgn adetsoli sreiruqe sicredane cradcai ttuuop ot osmeatncpe to rieeldv aedaqteu uaonmt fo dlobo ot etrs fo oydb

eorc:uS ..85n:No/Blin40/wh/7poi.cohktns.bgtswbwmvK3//

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fkstpashls  t'Is L to R +2



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