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NBME 21 Answers

nbme21/Block 1/Question#13 (42.6 difficulty score)
A 25-year-old man develops shortness of ...
Decreased alveolar Po2🔍,📺
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 +9 
submitted by alexb(49),
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ixpcHoy onulpyram otnaccsironoitvs H,)VP( slao nknow sa teh ll-sLnerardejitEu hsna,cmeim si a colaioilgyhsp oneohmpnne in hhwic amsll mpyronlau triseaer rnscttoic ni eth eseercnp fo areaollv iaoyphx l(ow yogxen eell.sv)

ielWh eth nncaeetmani of lpnot/nsoitvriuniaefe aorti dugrni olgernai burociontts of lrifwoa is ifbca,elein PVH nca eb lnatmedrtei nrdigu alogbl aaleovrl ixyopha chwih corscu hitw ruxoseep ot ghih ttdaelui, reewh HVP ecssau a gnsiatiinfc iesercna ni tatlo olnruyapm scraaluv ssniectrae, dna mpyruaonl eaitlarr uree,srsp yotlelanpit edgainl to paylnrumo ienrehnpyost dan yoauprlmn m.daee

ipok/_ndstiwnpnyHpeotloiioisociwiraymah/..spto_/:a/trveckruigxnc

lovebug  2019 FA, Pg 665. PAH +  
drdoom  ^ broken link +  
skonys  (Lemme know if I'm wrong and dumb af) But I believe we evolved this is that the body doesn't want to perfuse areas that arn't ventilated well. here's a pic https://rk.md/wp-content/uploads/2018/01/hypoxic-pulmonary-vasoconstriction-diagram.jpg who do you have in a bar brawl? Dr. Ryan or Dr. Sattar? +  
skonys  Edits: ...we evolved this so that the... +  



 +1 
submitted by haliburton(217),
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FA 02:71 horCnci iopxhcy ulmnaropy nviotosiorcactns usletrs ni nuoalpyrm itsernnoyehp dna RH.V

yotsubato  Yeah but in a chronic case this guy would produce more RBC and not be hypoxic anymore. +26  



 +0 
submitted by abhishek021196(79),
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iHoxpcy yulapmonr icntcoatosnrsivo V,H()P oasl knonw sa hte dletEuerslLjairn- ,ihenammsc si a yhsploiogacil nohnepeomn in hwhci masll rouplnyma esariter ncisctort in teh rencpese fo eolvrlaa xaihoyp (wlo oxnyeg eevsl.)l By recirgntdie odobl fwlo from evaylrot-lipendot guln srnioeg ot wtlvli-eeedanlt nugl gen,iors VPH si hogutth to be eth riamypr henamsmic ilyrgndenu anusotiot/ilfrevinpne aim.n]cg12][[th The cropsse himgt llatnyiii msee tii,vroucunineett as low geoynx veelsl timhg eatyetlohrilc attsmulie cdersniea boold oflw to het uslng ot niseecar gsa axehe.cng weHoevr, het urppeos of HPV is ot edsirutitb lfldoowbo engorallyi to caerneis het aleovrl ficeinyefc of ags heegcxna wbnteee ria dan obold. hleiW hte meacanetnni fo oi/revfonltaspuetnini aitor drugni eirnogla btncorostui fo owrailf is fibacle,nei HVP anc be drneilaetmt rinudg bogall aalerlov yohxapi hcihw ocucrs ihwt xoerepus ot hihg ittd,uale eherw VPH susace a itncsiaginf nericesa in toalt yunoalrpm vaacurls an,iesectsr nda mroyupnla aeatrirl eru,prses pnoiteatyll gledina ot yaorlpnum rispehtyneno nda arponylmu eemad. aeSrvel satcrfo intihbi VPH lcnndguii deciseran rcaacid tup,out paaon,hicpy omyhpaetr,ih iililoasosc,/sksaad dsairecne omrualpyn uvclaras sie,necatrs hnealid tctsa,eehsni lcaiucm nlhenca s,bolrkec vtoepsii irxoyan-erepdt srpesreu P(PE,)E yefcihgr-hqune litinavonte )(F,VH slrprooiete,on irctin xeod,i dan sdia.vsoatrol