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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 pg 2.71 ooT umhc eitonxaogny cna cuesa feer craldia damgae gdienla to yteharopitn fo ryapeutirtm

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mmm21  Okya i thmig eb arered,td tub wyh i โ€™tanc tdnaduensr hatt htey r kgasni aoubt teh gtinh atht is aaddegm ? ๐Ÿ˜‚๐Ÿ˜‚ +8
sahusema  eSyiulors! The eunoiqts syas he"t aogl of ematttner is hte rtpoincteo fo hhciw of teh floiwlnog utuescsr"?rt fI oot chmu O2 mesaadg hte ai,etrn how is shit rntaetemt sueppdos ot be ectrotpeiv to the tarnei? +2
ratadecalle  I iktnh too uhmc oyxgne odwlu be ithw het ovintelrta ngaivh a ghih FiO2 it,nsegt ihchw ethy o'ndt inmtone eehr but mI' uinsgseg httsa hte nhigt hte'yre iltonrgcoln ot oiadv eogxny c?ixyoitt +2
burak  tyeh tdi'dn igev eht pnttiae iof2 0%10, nteioqus ksas eht rnsaeo rof ti. btu in a revy isptdu ayw +31
naught  plStealmeunp O2 yma laso ecsau mhroayblnopncoru isaapdysl ro nvrtertuiirlacna rmghoaehre mae(inrgl imt,axr ecotlda in brutcrveuasnil nzoe OTN rdhioco ulxesp) +1
fkstpashls  -992%5 tisn' gih,h tbu 'tis noeuhg to get vtgiyheren lsee tdag.yoeenx ueBecas tis' otn 00%1 ighh oflw het saetrni d'tno eurocezvv-laasri nad alde ot oeeggrrme,hda/amah nad sthi kile t.tah +1
soccerfan23  nI ohetr who..esdr.t. ueqitsno is cbialslya niasgk hyw eyth eagv het ttanepi a fi2o fo 95%9-2 atsinde fo 0%10. The renaos si usaeceb %100 yxgeon dluwo elda ot eynaiotrpth of tym.aitrurep hTe lrewo 5-929% xongye veells orttpce eth tainer mfro eaga.dm hTe rionwgd of teh sinqeout skcus toh oi.m +3
randi  AF 2190 p120 unedr Free aliacrd nryjui spxaleem +
umpalumpa  rmfo UATREN mt2a%hehl~r/esga4oaaapntetnxln%re0mSe,uig2te%5wis.t/20m:p;wsrs%Oyaox:a2:12ero%e=uPne%2ite72Oahe0Rnyah70s%te%tat:o0hs2s.0%i2a0n2%da&t2ithwra%=0n%hcoiotsut.02cD,g%dtnv/.I0exhxcsDwr2%0t/v0uatit2n1%Se002%2#2g veaeSrl nrteec setuisd ehav onshw a oherstilinap btneewe a x-yhohiegng tauiartson dna PR.O It semse thta a a23OS9;%&tg sisncerea hte skri rof verees PRO dna nede rof tharepy +

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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icornhc" hghi oxgyne itrnatsosau anc easvdyrle ceffta ugln dan yee ooetumsc of mertrep . fn"itansknli

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submitted by โˆ—divya(75)
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regea thiw a. e'hrubyektr riyntg ot asy htat ayrripm lgoa of enametttr wthi letpnmpleuas o2 si ot mkea urse rhtee is on arlietn dgmaea.

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submitted by โˆ—ergogenic22(401)
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ywh is pceoinrott of het iorcdho ulesx,p romf iettlvnarrrciaun eruputr ynaoserdc to eglnirma raixmt hrragemohe nto a pobslsie wnser?a

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whoissaad  eys asem i,stnuoqe ohtb tnrhpiyeota nad arauetlitrvnirnc gaeomemhr anc ocurc due ot hhgi oexgny .levsel. +
cienfuegos  I aisnmeklty hesoc irocdoh eplusx oot, ebasd on ikwi sesme siht si mtos ncommo ucsea fo HVI in term i:fastnn HVI in eht peerrtm nirab ysaulul arssie rmfo hte grlniaem axmirt aersweh IVH ni the rmte tsnnafi nisaeoitgr fmro teh ohcirod .seluxp rveowH,e ti is lpurcryaltai mooncm ni uetpaerrm sanitnf ro tohes of rvey low rihbt ewhg.ti.. oMts tnniatvrlrrueaci hgrhmeraoes ucrco in the irfts 72 rhosu ftear bithr. ehT ikrs is seeadcirn ihtw sue of areoprerxaolct anemremb texgoonniya in mtperer n tsaif.nwtIsliat/tiipaek/um:/rhpnnesirriaivhBwrebge_gkiedo.oarta/rhe#c.n +
burak  oodirch exslpu si rfenteifd htna rgeaniml txiamr +
meryen13  letainr rehrhmeago is orem ommcon ttha VHI nvee fi uyo tinhk htta it lcduo maadge horoicd aepcsl cnsayored to gmrelian atxmri ogmra h.eerh8..b1h0n1b.ntm/v.wldc:3upw/pehsw4n6//tiiogm1 +


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 -4  upvote downvote
submitted by โˆ—lilmonkey(63)
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ynoeAn adrneig isth qntsioeu

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lollll i got this right because of This is Us.

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