NBME 21 Retina (NBME Answers)

NBME 21 Answers

nbme21/Block 4/Question#33 (reveal difficulty score)
A female newborn delivered at 26 weeks' ...
Retina 🔍 / 📺 / 🌳 / 📖
tags:

+8 upvote downvote
submitted by ∗hyoscyamine(59)

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FA gp .271 ooT hucm ogtexnyinao nac cseua free araicld mdagae nlaegdi ot nyrtepohtai fo reumtpyrtai

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mmm21 kOay i higmt eb errteadd, tbu why i nact’ sddtnaernu atth ythe r kingsa atuob the htnig tath is gamddea ? 😂😂 +8

sahusema o!eyrlSsiu The uqntoise yssa et"h aglo of ttarteenm is teh rntiepocot of hhciw fo teh glnfowlio ?eutsstrurc" fI oot hmuc 2O amdgsae hte te,nira how is sith enmttrtea sseupdop to eb eetvpcriot to eth itnra?e +2

ratadecalle I tkhin oot hmuc ynxeog wdluo be with teh otletrivan giahnv a hhig FiO2 st,etign hwchi hety no'dt otnenmi eehr tub 'Im usnigegs sttah hte ghitn ryteh'e ncollnirgot to oviad oexgyn yttoiicx? +2

burak yteh t'didn iegv het epantti i2fo ,001% uitqosne sska eth reoans fro i.t btu ni a very tdipus ywa +31

naught mulpaeSepnlt 2O yam osal saecu rncyaobunhplrmoo sisplayad ro atnrtilrinuacevr morgahereh (igmalrne ,aimxrt dactelo in ebivrustnaclru ozne NTO codhrio xp)lsue +1

fkstpashls 2599%- i'stn ,hhgi tbu 'tsi noughe to egt geehrtnivy esle naetydgxe.o aBeusce 'tis nto 0%10 hghi fowl hte saetrin dotn' oevruraliz-svcea nda dale ot /ah,aemrromedeggah adn hist ikle atht. +1

soccerfan23 In hoert od.hwt.s.er. nieqtuos is csaayillb iasnkg why etyh gaev eth iaeptnt a fo2i of 5-929% naetids fo %10.0 Teh naerso is uebscea 01%0 xyengo dolwu eald to eprtyianoht fo pyrteauimrt. The lweor 9-5%29 xnyeog ellsev toptecr het ireant rfmo m.agdae hTe rdngoiw fo het tueinsoq sucsk oht .oim +3

randi FA 9201 021p rudne eFre laiarcd uirynj elaxpesm +

umpalumpa ofrm RUTEAN 0stsae52n%os2.%Ia#0grle2atu:20%totrpot/&nse12%2aSe:=hx7%2wnyo0%samswcahga0i%2o2itvnRxt0hte0aheeeiaP;4wde%t%,n2hicOrstxmh2/au%%i1Stha0dytt7e:r22=:ea%2a2v%.gDnpru0uctgha,/w~O0o2%lnseD%%emt0.0xnnist0/ei.2r0t ael Serv etenrc tisdesu hvea onhws a iltieosapnrh eetwnbe a h-xoggiynhe insaturota nda .RPO tI esmes ahtt a S2%taO&g3;9 aisnrcsee eth krsi ofr rseeve OPR nad ende ofr ratepyh +

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 ∗mcl(670)

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r"ohncic ghih xongey stinrosatua acn daevreyls etfcaf ngul nad eye tuemocso fo mrrptee isn"a t.fnnlik

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+0 upvote downvote
submitted by ∗divya(75)

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eraeg htiw '. btuerehrkay ygrnit to yas atth ryaiprm oagl fo teeanmttr wthi neslpmuaeltp 2o is to aemk esru eehtr is on nlireat dg.amea

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+0 upvote downvote
submitted by ∗ergogenic22(401)

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why is protocteni fo teh cdrioho supl,ex mrof vrtleiainucantrr truruep orasdncey to eaignmrl mxitra oareghrmeh ton a piseolsb sera?nw

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whoissaad yse seam utsoq,eni hotb nartpoeyhit dna lteiatraivrunrnc mrheogmea nca crcou due to hhgi xneygo s.elve.l +

cienfuegos I linytkasme hocse rcihodo lxpseu ,oto eabsd no wkii semse tihs si toms mocnmo ecsau fo VIH in rmte sfinant: IHV ni eht tmrrpee arinb ysllauu irsesa rmof hte galmneri xmatri wreseha HIV in the mter nstiafn aioniregts from het ochirod pl.esxu evro,wHe it is ycarlarlpiut cmnmoo in eprrtumae safitnn or otesh of reyv low birht w..hitg.e toMs rnvuirietlnartca eresohhgarm corcu in teh frsit 72 ouhsr eartf bhit.r eTh krsi si rneecisad iwth seu of reartopexrclao reamnemb neioxganoyt in treerpm a sf.ntinahoehra.bi#tlo_engesph/temr/drniiIvrweBgar//kte:rnakatcisu.iiiwp +

burak hiocdro uxsepl si erfefitdn naht remaginl raitmx +

meryen13 nriatel raroeehghm is ermo nommco taht IVH evne fi yuo ikhtn htat it ldouc madgea dhcoiro clpeas syearndoc ot lnmaireg xramti grr.eoame hh:nml0//bme.t/hti.gwnbu/6h81p.wi41p1cnvo3.swd +

-4 upvote downvote
submitted by ∗lilmonkey(63)

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oneyAn iargned ihst ountiesq

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lollll i got this right because of This is Us.

+/- alexv0815(10)

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