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Retired NBME 21 Answers

nbme21/Block 4/Question#33 (reveal difficulty score)
A female newborn delivered at 26 weeks' ...
Retina ๐Ÿ” / ๐Ÿ“บ / ๐ŸŒณ / ๐Ÿ“–
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 +8  upvote downvote
submitted by โˆ—hyoscyamine(59)
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AF gp 1.27 Too chum ynooxegatin nca eucsa eref caadlri aamgde indglae to etprnhyitoa of rtyeuitmrpa

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mmm21  aOky i tgmhi be aerde,tdr btu ywh i atcโ€™n nrdnaseutd htat tyhe r kgsian autob teh tingh hatt is mddaega ? ๐Ÿ˜‚๐Ÿ˜‚ +8
sahusema  eoSirl!yus The osienuqt ssya eth" lgoa fo tnetetamr si het erooctnipt of hcwhi fo hte lgfonilwo utust"?secrr fI oto mchu O2 gdsemaa eth na,tier ohw is this etramttne ppdsusoe to be preictotev ot the i?tarne +2
ratadecalle  I ktinh too hcmu nxyoeg udolw be hwit teh rniottelav gihavn a hhgi O2iF ,tintseg chhiw htey 'dont ietnnmo ereh tbu 'mI nuseiggs tshta eht inght yer'het ilrgntoocln ot idoav yogxne itcyoxti? +2
burak  yhte ti'ddn gevi hte anttpie f2oi 01,0% uesitonq kass het soaenr fro .it tbu in a ryve spidut ayw +31
naught  metpenulpaSl 2O yma slao caeus obhonnrcoaylprmu psaayidsl ro atrcntairelrvuni orermhaegh imagenlr( ,ixmrat alcetdo in rnuvuesacrblti oezn TNO ohirocd lepsx)u +1
fkstpashls  9%-295 nst'i ,ghhi but st'i noeuhg ot tge yniergtvhe lese atynod.gexe caeBuse si't tno %100 ghih lofw eht ertisan nod't varszrv-cieloeua nad dlea ot oeha,a/rrdgeaehgmm dan shit eilk ath.t +1
soccerfan23  In hteor .w.htrdo.se. qouinest is aylsacbli asingk hyw yhet aveg eht etptnia a f2oi fo 9-59%2 naeitsd of 001.% hTe oaenrs si seaceub 10%0 nxgoye loudw eadl to ypotriethan of etup.armirty Teh oelwr 9-2%95 gxneoy svleel trocetp the aitern fomr dega.am The dogwinr fo hte nsiuetqo ukssc oth im.o +3
randi  FA 9201 01p2 dreun Free cialrad ijyrun melxapes +
umpalumpa  rofm EUNTRA Oet2i/hIioi%od%vhev/Sew22s2l1ry~aure/%tct2w%r10h=7mtt0nx%on20ea0a00ec%n,igsDe%t0Sg2ao4%rcup0th#a2ssPte2ti:ega.en%rlaaxw.shme2tssexhw2ta05xne0nn/Ruhtt=0i:%a0toi:D;dnt7&yO2aoshan22%%0pa.%0e%asr2%.2:t,t2mgu% rS aeevl ecnret sesitdu hvea oswhn a pishnaeirlto nebwtee a hgxeoighn-y oniatstrau dna PO.R tI sseem atht a ;S%39O&2tag iasnerecs teh riks orf verese POR nda deen ofr peahrty +

Wikipedia pathophysiology section of "retinopathy of prematurity" explains this pretty well. Retinal vessel maturity is incomplete in premature infants--the process of continuing this maturation in these babies is directed towards growth of vessels in O2 deprived areas, but if O2 is being supplemented, this process is hindered. Therefore when O2 supplementation is removed, excessive vessel proliferation going into the vitreous humor (not where it is supposed to be) leads to retinopathy of prematurity (defined as "disorganized growth of retinal blood vessels leading to scarring and retinal detachment")

+7/- beanie368(27)


 +2  upvote downvote
submitted by โˆ—mcl(671)
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ircohcn" hhgi onxegy satruations can dsyaleevr fefcat lgnu dan eye ecuomtso of pmetrer i.f nns"atinkl

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 +0  upvote downvote
submitted by โˆ—divya(75)
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regea tiwh hte'erubry .ka yirngt ot asy htta paryirm lago fo etnaetrtm wiht spmelteuapnl 2o si to maek ruse erthe si on aletnir e.dmaga

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submitted by โˆ—ergogenic22(401)
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why si peintorcot of eht rdhioco esl,xup omrf rurailitacnrentv rtrpeuu snrcdoeay to ingealmr tarxmi ehogharrme nto a eoplsbsi anrwes?

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whoissaad  sey msae sutq,eoin boht nhyatetoipr dan riuiceaatrvnnrtl ereaomhgm nca cruoc edu ot ighh ygnxoe .lel.ves +
cienfuegos  I kelyasnmit soehc irdcooh usxelp oto, dsbea on kiiw sseem itsh is ostm oonmmc eucsa of VHI ni rmet nn:fiast VIH ni het trpreme bainr lyuauls rsiase ormf teh lgrenima txairm eherwsa IHV in eth tmre sifntan sietigaonr ofrm het rodhioc .uepslx oew,vrHe ti is airruaytpllc coonmm in tarrupmee nfiastn or shtoe fo revy wlo bhtir wti.e.h.g sMot tclueririnaavrnt rhgemrohaes ocruc ni eht fstri 72 uosrh afetr hit.rb eTh risk is sndeciear wthi seu of oarpxreaclteor rmnbeaem tnineoaxyog ni rptmere afnis tn.wuitpaolh:retgsIceeps/ba./denihg_t.ektahwkiaia/nemrvri/noBiirrr# +
burak  idrocoh luspex is fitendfre than emgliarn ixramt +
meryen13  nareilt gmaohrhere is orem oomnmc tath IHV evne if you hktni htta ti cduol agdame dhiocro pscale oycaernds to nrmilaeg xatrmi rgmreaeho .htt.3.iwnl:8m4me.0h/pvis1whw1nb/p./ubodn1/gc6 +



 -4  upvote downvote
submitted by โˆ—lilmonkey(63)
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eoynnA ragnied htis sonteuqi

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