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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 127. ooT muhc tneoyiagxon nca uasce fere crdliaa admega geinadl ot epytoihtnra of rupyaemrtit

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mmm21  aOky i gitmh be ,erateddr but yhw i ncโ€™ta snnautedrd htat htey r knsagi aotbu eth thgin ttah is gdmedaa ? ๐Ÿ˜‚๐Ÿ˜‚ +8
sahusema  iSrsyoleu! hTe nseoiqtu says he"t gaol fo etmartent is hte rtcnoipteo fo ihhwc fo the lgownfoli rut?r"stusce fI too mchu O2 eamsagd eth en,tira woh si shti tanmettre pdupsoes ot be ttpreeciov to the atnire? +2
ratadecalle  I nhkti oto much ynxgeo dwluo eb hitw hte tonvtaelir gvihna a hihg OiF2 gt,isten ihwch heyt do'tn meinont rehe ubt Im' nsguigse thtas the nghit r'hyete oclntlngiro to odavi oyngxe iotcytix? +2
burak  yhte ddni't iveg het pteanti iof2 ,100% utneosqi sksa eht onears rof ti. btu ni a yevr uditsp way +31
naught  tuSplmeeapnl 2O amy olsa sueca pmcrnbolohanoyur asyldisap or raueacinvrntirtl geaorhmhre gmrena(il axmtr,i coetlda ni butunarvcesrli ozen ONT dicroho pxs)eul +1
fkstpashls  9-95%2 tsni' ihh,g tub 'tsi guehon ot egt erhgvtyine sele .eoyedxatgn scaeueB 'sit not %010 gihh fowl eht srtneai t'don ruo-azivslarveec dan leda to mgeea/haamg,orredh adn thsi keli ttah. +1
soccerfan23  In etroh hs.e.row.t.d siquteon si ciayasbll nagisk wyh ehyt vega het tpietan a 2ifo of 299-5% edntisa fo .001% Teh osaren is sueeabc 00%1 xnyoeg uolwd aled ot tiethonyrap of i.atrytermpu ehT rowle %5-299 ogenyx veslel tocrpte hte ierant romf dmaa.ge The dwigorn fo the isnqotue ukscs toh omi. +3
randi  FA 0912 p021 neudr eeFr laradic njiryu emxslpae +
umpalumpa  rmfo NATREU 2aeaelov2eat0seeii:h;2eho2adg:uutnm2te7.2vS2#Dmhe0sxt2l0i2%0=eettwit/i0:ti%rp%.Os2xs2xngatgo%%.caah%tDaRetndareh022Ihs%x%,a5w%saihua&s0u0srn0%%co%2nn0:Po100rnco%4t%2ay/~r102Or/n%%,g.72e=0wwtae/hnSytsptttm evealSr netcer estdisu ehav nwhso a pentraisoihl webeetn a gi-gxhynheo onuaatirst nad P.OR tI eemss ttah a &tO2Sa93g%; iasercnes eth krsi for seeerv ROP nad need for tarpehy +

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)

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 +2  upvote downvote
submitted by โˆ—mcl(671)
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croc"nih hhig yoexgn ustaioantsr cna vysalrede acteff nulg adn eye oeomscut fo tmrepre t"nf as.niilnk

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 +0  upvote downvote
submitted by โˆ—divya(75)
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regae htwi y b'uehtkaer.r rygitn ot say atth pyimrra oagl fo eamnttter tiwh lptslmepaeun o2 is to ekma sure trhee is on raenitl .amgdae

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submitted by โˆ—ergogenic22(401)
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why si nroetpciot fo hte odhicro p,leuxs ormf eitrrtncilvaanur rpuretu aoncedrsy ot meaniglr miaxrt gerehhmoar nto a pslsobie wrasen?

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whoissaad  yes eams osue,qtin htbo ioatnrhypte and arlcuitrniaervtn eemoagmrh cna uorcc ued to hghi egxony e.le.vls +
cienfuegos  I smakeitlyn hsceo rhdocio lsxeup t,oo ebsad no wiik essme tshi is toms nmcoom eausc fo VIH in etmr :inafstn HVI in eht erpterm iarbn suyulla ersasi morf the iemlanrg ramtix haeserw IVH in eht mret safnnti taiignorse omfr hte hodroic uple.xs ,ewoHrve ti si aycipurlrlta momocn ni uearrtepm nsiatfn ro toesh fo ryve lwo hbrti .eh..wgti ostM nrrtcvaaiutrline hmoegsehrar ouccr ni eht tfrsi 72 ursho etrfa ht.ibr Teh iksr si ecesandri tiwh use of eeolctoaraxrrp ermmbaen oeaxtningoy in mrrpete tnfs.niaamd/voriwanki.eaetepI#rsricwihuggBrrioea//:rpitkesh/tnilbthae_.n +
burak  ocirohd pelxus is eftednrfi hant raimglne xrtaim +
meryen13  elartni mgeehroahr is emro ooncmm htat VHI eenv if uoy inkht that it odclu madega icdhoro seaplc anyedrsoc ot amlrgine amirxt he rroga.ehmn1tin8:1.b6/i/wnhhwuc.mtwv/b41p0sel.d/m.pog3 +


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 -4  upvote downvote
submitted by โˆ—lilmonkey(63)
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oneAny radengi sith ounqsite

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lollll i got this right because of This is Us.

+/- alexv0815(10)

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