NBME 21 Retina (NBME Answers)

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Retired NBME 21 Answers

nbme21/Block 4/Question#33 (reveal difficulty score)
A female newborn delivered at 26 weeks' ...
Retina 🔍 / 📺 / 🌳 / 📖
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+8 upvote downvote
submitted by ∗hyoscyamine(59)

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FA gp 17.2 Too cuhm axenngotyio nac ucaes reef iracdla eaamgd daielgn to rhtpaoitnye fo yutiapetrmr

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mmm21 aOky i mihtg be drerae,dt ubt yhw i nca’t enddstunar that htye r isgnka tuoab eth tginh thta is damegda ? 😂😂 +8

sahusema yisSulo!re hTe squtneoi ssya h"te lago fo nmttearte si eth ptcintoore fo whihc of het ofigwlonl rcstr"suu?et fI oto cmhu 2O agdames the ra,etin owh is hsti etemtntar peouspds ot eb rtctievpoe ot het et?inra +2

ratadecalle I tnikh oot much gneoxy owlud eb whit teh ottelvanri nvhiag a hghi O2Fi negst,ti whhic eyht tdo'n noeintm rehe tbu mI' euigssng atths teh ghtin y'rteeh rnoolcgntil ot oiadv nyoxge ?ctiixtyo +2

burak yeht nid'dt egvi het itapnte 2oif %,100 qoetinus assk eth raeons fro ti. tbu ni a evyr disptu ayw +31

naught apmSnpelulte O2 amy lsao sauce rlmupoyoconrhban sidylsapa ro itcivrrnntuaarle grmhoharee ga(milnre m,xrait ldcteoa ni evtliurbansurc oenz NOT chdroio eu)sxlp +1

fkstpashls 2-9%59 'tnsi hi,hg btu its' noughe to gte geehytnvir lsee .dantxyoeeg aBesecu st'i ton 01%0 ighh olwf eth stanire od'tn saraeovecirvzlu- dan lade ot ,argaermd/hgaomhee nad sthi ikle t.tah +1

soccerfan23 In hrteo d.trs.owe..h quoinets si ylbscaial gankis ywh htey avge the pinatte a o2if fo 9%925- asetind of 10.%0 The rnaeso si ceeuabs 0%01 gnoxye udlow eald to erpoynhttai fo rttupymer.ai The woerl 9-25%9 goxyen lleesv eoctptr the itnrea fomr aemag.d ehT diognwr of het teqonsui scuks oth .iom +3

randi AF 2901 02p1 uendr eeFr caidalr njiyru sapexlme +

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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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submitted by ∗mcl(671)

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ci"rchon ighh nyoxeg aoasusnrtti anc asledvrey ftcefa lugn nda yee mtseoouc fo eptemrr n n"tfsia.klni

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+0 upvote downvote
submitted by ∗divya(75)

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erega hitw k.e rbeyurtah' nitrgy ot say atht pyirmar gola of mrtneatte thwi leepumnalpts o2 is ot emak srue terhe is no reintal mdg.eaa

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submitted by ∗ergogenic22(401)

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hwy si eiontrtpco fo eht chroodi es,ulpx mrfo inrrartvcanltuie terurpu yecdsnoar ot nligrmae aimtxr egorhmreah not a sespobli n?wreas

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whoissaad sye sema utq,sieon bhto eoirpanthty and anutterlrnavrcii mraohmgee cna ourcc eud ot ihgh gxyeon e.l.lves +

cienfuegos I slikyaetmn oshec ohircdo sleupx ot,o ebsad no ikwi sseme isth si osmt omnomc eucas fo VIH in ermt ftnn:ias HVI in the rreemtp nbiar yllauus esiasr rmof the lginmare trmixa hrwaese HIV in eth rmte itnasnf trsaoieign fmro eht rhicdoo pxse.ul Hw,revoe it is iytraraucllp omocnm ni utrepmrea stnniaf or sheto of evry lwo htirb .wh.itg.e Mtso irniuttarlvnerca mserorhegha cruco in the fsitr 72 ohusr refat bih.tr ehT isrk si esirnedac hitw esu fo teoalrperxcaro bnraemem ntaioexyogn ni etmrpre st.afinn ae_mesovapr#tpg.eunri/eih/h/oaaeraBr:iinnlkegdrIwki./tsitwrhctbi +

burak roihcdo pelxsu is niteffdre tnha ganlemir ramxit +

meryen13 rntlaie aehrgerhmo si rmoe mncoom tath HIV enve if you thnik htat ti ldouc amgade drchooi slcpea aeodyrscn to meialrgn xamrit rher.megah o/piigcwum61.0sod1:tn/vlp.4/h1n/3wbwnh8.etmb. +

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-4 upvote downvote
submitted by ∗lilmonkey(63)

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eynonA gdneria hsti eiqnotus

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SPOILER ALERTTTTTTTT

lollll i got this right because of This is Us.

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