NBME 21 Retina (NBME Answers)

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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AF pg .721 Too muhc xngoineotya nac uasce eefr drcaali adeamg eglndai to tynrtaiopeh fo mierurayttp

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mmm21 aOyk i tmhgi be rtedra,ed but why i tnc’a ndstrdaeun ttah teyh r ksigan tboau eth tgihn atht is dmeagad ? 😂😂 +8

sahusema roeslS!uyi ehT qniseuto sasy ht"e agol of meettratn is het eonctptori of hihwc of eth gifowloln t"eu?turrscs fI oto uchm O2 saedmag the raint,e ohw si ihts teemtatnr pdsuoesp to be retivpceto to eht e?iartn +2

ratadecalle I nhtki oto hcmu oenygx wdolu eb hwti eht tvonraltie givnah a ihhg FiO2 egntist, cwihh ehty otnd' onmtnei eher but Im' ngsgsieu htsta hte nthgi e'hrety cgoirlnlont ot aivod eoxnyg iyxto?tic +2

burak yhte nidtd' geiv teh tatniep 2oif 0,01% uisteqno skas the aensor rof ti. utb ni a vyre ptuisd way +31

naught altlueepmSnp 2O amy sloa aescu onmcalyroobhnrup adyipalss or uvinaalrcrnetirt homherrega n(elimrga rxti,ma dltecoa in ecirtrnlusvbau nezo NOT dicrhoo lex)spu +1

fkstpashls 959-2% snit' ,hihg tub ts'i neghuo to get vynehegirt esel .etydngxaoe ceuBase sti' ton %010 ghhi owlf eth tinaesr dt'on urrcvseziavela-o dna aedl ot aeeghagmh,meoarrd/ dna tshi like .hatt +1

soccerfan23 In htreo ..t.ds.erhow uonteisq is ibllsayca knaigs hyw yhte aegv hte pteiant a o2fi fo -9952% iadents of 10%0. ehT arenos si esueacb %010 gynexo duwol elad to ittyperhnao of ireatp.ymutr Teh olwer -92%95 xnoyge eslvle etrtcop the nateir orfm dmeaga. eTh rginodw of the tiueqons ukscs hto .iom +3

randi AF 1209 10p2 nerud reFe dlcraai rjnyui esealpxm +

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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)

+2 upvote downvote
submitted by ∗mcl(671)

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rn"cciho hgih enyxog usaroanstit anc saredyelv cfeatf lgnu nad eye ueosotcm of mpeterr fis.atnn"inkl

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+0 upvote downvote
submitted by ∗divya(75)

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graee tiwh ehr r.te'ybkua nigrty ot yas ttah yiprmar alog fo etttrmane whit tlapmenslpeu 2o is to aekm eusr eehtr si no nrtaile maed.ag

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+0 upvote downvote
submitted by ∗ergogenic22(401)

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hyw is nepritcoto of hte orhdoci eusxl,p fmro rncrunletvatirai rureutp yaerosdnc ot glraiemn xmtira oeharhergm ton a sislpoeb ?ewnsra

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whoissaad yse smea osetiu,qn othb ayientphtor and rvuctlietanrairn mroeamegh acn crocu eud to ghih oeyngx vee.ls.l +

cienfuegos I tliaymnkse oches orcohid xeuslp ,oto badse on wkii seems isth is osmt onomcm cesua fo HVI ni trem sainntf: IHV in the mertepr inbra lualysu arssie morf hte relinmag amxirt esaherw IHV in teh ermt siantnf sgiartoein ofrm eht odcihro e.xuslp Heevrow, ti is alartucilpry ommnoc in erprutmae aiftnsn ro teohs fo yvre lwo hirbt .ghiw..te stMo acetvnnalrirtiru emsrheahgor uorcc in teh sftri 72 ruhso tfrea rhib.t Teh ksri si ascriende whit sue of orratreceoxapl anbreemm xnngtoeaioy ni peetrrm niasnft. kieelri:ean.tha/rwt/aoeei/npv.rskoihatmisuc_ngbtih/rIdwgaieB#rpr +

burak codriho xplsue si ireffedtn anht rlgieman mtraxi +

meryen13 iealnrt heamrhreog si rmeo omcmno taht HVI eevn if uoy htnki that it duolc mdaage cioohdr epalsc esdyanorc to milanger amitxr oreaegrh mh.o3h1evsut8di4m0/.wb.n1n6b.//mlpig/nt1w.pwc:h +

-4 upvote downvote
submitted by ∗lilmonkey(63)

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Aynone idgenra sthi stunqioe

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lollll i got this right because of This is Us.

+/- alexv0815(10)

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