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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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He'ers an tleelxecn emgai mrfo BOAMSS if eepolp ear ghinav ctyuifdlfi iavgiiulnzs hsti: mm//QgRWha/to.sirm:Vhuptcm/

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lovebug  vrey lhplf!eu k!hsnta +



 +6  upvote downvote
submitted by jotajota94(14)
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DPA losfw rofm rotaa ot uyaopnrlm erryat redsiaegnc haatflfr.erdroTeoe e cadriac toptuu einssarce

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seagull  dnoset oerpa-ld aols ercsedae whchi wuodl dpro het O.C.? +
hungrybox  slglea@u I hitnk ti olwud enerscai aprolde bc/ meor oodlb si oggni nito teh naoyuprml searrtei >- snulg >- nmpuaroyl nesvi -> leaunevlyt moer loodb in ltef tcuimvrenaltie/r >- nci ropaedl +63



 +6  upvote downvote
submitted by heavy_neighborhood(6)
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PAD wsfol from het Ataro =&t;g= uonlyraPm ertsriae, by inpsgas het VR os heert is on ngaech ni 2O in the V.R

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felxordigitorum  heT ls""tea fmor the atora riugnd dasoeilt rqsureie sndieacer iacrdca tupout to t.scopemaen eErleyxmt eurteapmr ifatnns avhe dtmilie ilayitb to ceraisne eokstr oluevm dna thsu esu reaincesd ehart trea ot escniaer draccai p.uotut pw.m./K45wc//0Nkhh:ngssnbB/ibl.78o/nwot3.voti +2



 +2  upvote downvote
submitted by didelphus(70)
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A ADP ynessleatli aeesrtc a w-hhglofi hetra aefuril tnstuiaio in het baby. niecS a aonifctr fo eht LV tuotup is trenrude wutoiht nrigahce eht ,bdyo in rodre to tamnanii a marlno CO to the ybod teh etfl ircnvlete msut uppm a igehrh olemuv. ihsT uldwo aosl acuse hhgier ntah alronm rnlupoaym lpliaarcy lofw.

I kitnh semo fo eth ehtor usiqnote ear nitetgg at het iade ahtt we nt'od knwo het rindtioec of lwfo rof ersu. If hte lwfo swa tslruao&;ntagg--, the ycssteim P2O wdolu eb nlmaor dan VR P2O ihh.g tBu fi 'its sope,ptio het esiptoop dwulo eb tue.r

nSice sAPD are aaientdimn by P2,GE hatt ouldw tenbtrciou ot a olw laphpieerr alcuravs esrcstn.iea

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didelphus  nehr*aot ures ondet htta itsh twdon'ul acimtp RV xoegny eaeuscb eht lobdo si dddae to eth napyulrmo at,yrer wchih ahs iedtex eth V.R +3



 +0  upvote downvote
submitted by moneysacs(3)
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Why si dseo a DAP etraf htirb teslru in "irghhe hant alormn felt ltevrnaruic aadcicr ptt"ouu voer daneirsce ghi"tr inecvalrtur P2O?" oesD teh lmup rrayte -&;-gt aaort ushnt ecmebo eerervsd trafe h,birt so hgrehi exgnoy oarat lobod ouwld wflo cbka iton the gihtr neecrvti?l I egt atth moer odlob olduw be empudp to teh tlfe nv,ctleeri serigtlun in HVLR,/VH but d'nto tdsdnuanre the 2O itb.

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usmleuser007  )1 reihgh hnat rmaoln OC cb/ doblo si ushdetn rofm rtaoa to ymlpraonu rasei.ter Tshi lbodo si eddda ot teh vlouem htat aws muppde inot eth loupamyrn srtraiee yb eth RV. woN enwh hte edtenoxyag lbood unrerst ot teh AL & ,VL eth O2 ctnneto udwlo eb aetrrge /dt grehih oldbo movle.u osAl fro taht ames esonar remo oodbl si rnguientr to teh LV t(d/ VL oluevm plsu riatcfon of VR l.e)vmuo isTh dersancie eth .> -CRh- igtO tefL shsnut ahve ealt coianyss bc/ the VR is piunshg astigna the cesexs sepruser dntegreae by eht .VL hiTs dlsae ot ienEmgnseer omrednyS sa RV eaelgnrs and hsspue anitasg the serusrep orfm het VL ni the A.PD Tshu sntgfiih tLfe ot tirhg ot htrig to eLtf nda thsu het atel osacynsi +2
temmy  hTe yanotam is amauno-rrloaypt rypermynlauo-art elesniv-tf trma-eiutlf ncttrecliNoi eve that eth oolbd idd nto meco ocsasr het hgrit reath ta lla dan ueecbas fo hte LETF OT GTRHI nuhst fo het AP,D we dad rome umovel to teh FETL d.ies enecH het enecsidar etlf rilnueactrv uopttu +2



 +0  upvote downvote
submitted by masonkingcobra(408)
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nkiL

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necrotizingfasciitis  oGgni ffo of the oncmemts oelpep haev tedpso eavbo & inkda giingnbr tishng hD o getr A :etP oswlf rmof oraat ot unrmpolya stirre,ea ihwhc rvsreees frtea tib.rh Thsi smena egaoen-ddxeyt odobl lwof rmof eht maopnrluy rietsera to the aaotr & sles ovmelu iegnb ntes ot the LF dsie of hte reaht. i sT h srlteus ni a rdaesecde atalreodf cebaues eethr is slse obdlo fnilgwo rmfo the usgnl to rl-life teh LF leive,ctrn & hte htear is lilts unmppig hiwt eht sema orcfe as reefo,b os the mesa melvou of loodb si gvlan,ie utb essl in nneiretg eht FL side fo teh .atr o hFme r ree,h you ues CO = SV x S RH V = daeoplr - oaaelrdft (chihw is rsdaeceed edu to the ) D iPshTA stelrsu ni VS nbeig rgelar ahnt nrmao,l so enhw uyo uglp atht otni CO = SV x RH you etg a hgiher rmbune rfo rccadia tpotu.u +
didelphus  eTh tuscud triesrsuoa loswf rmfo PA --> troaa ni euotr to bypass eht ,lgnus ihhcw have yexelmert ihgh aeecirtsns to owlf. hTsi eevrrses rftea bthri due ot a dopr in 2GEP h(icwh aws ldpisepu yb het aplacnte) and cesenira in feelds-tid ysmstcei seas.iertcn oS a PAD ylicyaptl lowsf troaa ->- PA smunas(ig ehetr aer no ohert ce)ts.fde +



 +0  upvote downvote
submitted by jandj19(0)
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shTi is a yvre looc onccetp pnadelxie ni hte ipRad veiRwe yhtogaopl oko,b agpe .572

dtfLed-sie ot dt-irshidge taerh nstuhs utrsles in evulmo olvodare in hte hgitr edsi fo hte rahte, ciwhh esnscirea VL eovulm )(paoeldr ude to oemr lodob ierngutrn fmor teh hrtig tehar ot hte tlef ta.hre nA seaicnre ni LV dplroea si leaqu mreo dcriaac ututpo dan emro kwor fro hte tarhe. aeLtr ni ifel hatt lilw dela ot na niccetrec ptey of VLH thwi ceereasd crdaica o,tuptu alnuoyrmp yehetnposnir nda a torenicccn VRH deu to hghi aelardfto atht eth rhigt eahtr hsa ot ppum tn.siaag

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 -1  upvote downvote
submitted by djinn(6)
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Low atoerdalf ;&tg gihh OC

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 -2  upvote downvote
submitted by hello(429)
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hiTs si eth lutaac cortecr p:alinoaxent

ADP causes ooldb ot lofw ofrm iedndecngs aaort ot tnpate usduct stsuoraier noit urolnmypa liantoriucc og"ht"tlieft-r-)(

ehT "esl"ta mfro hte arota druign oeisaltd ruerqies sridaence adiacrc utoutp ot noeetacsmp ot divrlee aadqeteu tamuno fo dlboo to tsre of dybo

uroeSc: bh//n0pw/tBm:.tbsco4h/.wi/vk8Nlosw.5nn.3iKog7

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fkstpashls  'sIt L to R +2



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