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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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FA gp 2.71 Too muhc aygexntooni anc easuc efer lcdaiar gedmaa egiadnl ot pyriaehnott of tripmretayu

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mmm21  ayOk i ihtgm eb tere,drad ubt wyh i โ€™natc udtdnserna ttha tyhe r asgnki tobau teh ngiht atht si gamaedd ? ๐Ÿ˜‚๐Ÿ˜‚ +8
sahusema  iy!ourlSse hTe steuonqi sasy e"ht loag of ettatmren si eht poeinttorc fo whhic fo eht wlioflgno e"ursstcr?tu fI too mchu O2 egdsmaa eth irena,t woh si tish enrtttaem psodueps ot eb irpoctteve to eht ie?ntra +2
ratadecalle  I tikhn oto mchu gxoney ouldw eb whit teh enrlitoavt igvnah a ghih 2iOF ints,teg ichhw yeth nto'd ienomtn eehr tbu mI' signgsue ahtts the gntih te'hyer gnoltnirclo ot aovdi ogynxe cx?iyoitt +2
burak  ehyt n'dtdi giev eth aiteptn if2o %1,00 ustnieoq asks eth onesra rfo ti. btu ni a veyr sptuid ywa +31
naught  eeplnuSmltap O2 yam osal esauc upabnorhoyolcrmn saisdlyap or retlnucariintvra egahmreroh mielrna(g rtaxmi, lcedato in cvrtusaneiblru onze NTO irhoodc )xeplsu +1
fkstpashls  992-%5 ins't h,ihg tbu ts'i genhuo to etg vitehregyn sele ynoatde.egx saecuBe st'i otn 010% ihhg wlof the etasirn d'not lsveoirvauarcze- nad adle to mdahro/mrgehe,agae and isth ikel t.hat +1
soccerfan23  In etrho wdrthoe....s qonseiut si aylcabsli akngsi hyw htey geva the ptneita a 2iof fo -59%29 tidesna fo 0%.01 The oesnar is aecubes 00%1 oenyxg woldu edla to anhietrpyto of eitymtrap.ru hTe lwreo -2%995 xyeong eslvel otcprte eth tairne rmfo maadge. hTe diwnogr fo eth snutoeiq skusc tho o.im +3
randi  AF 9102 201p nrued Fere idaarcl unjriy eelmxpsa +
umpalumpa  ormf EUNART 2:aa2Oxtyt%na/r&wt%ta0.PR%:i2t%%0i:h%%2m2/eag%iOoS22%dts%n2d2tere:1seuS,secrui5tot2yr%eal0itcai00eh%mptsae2Dwna~g%oeht22eIolx.0/tw;x402ghn2sn%mhn.e0a0xo1,nvt%nra=e2#ettDau7sos7a00i%0shhs/vr.wgec0a0pht=un2 lavereS enrtce tiuesds haev sohwn a aiitrlosephn benwete a gghnox-hiye isuatratno dan ROP. tI seesm thta a 9Sg2t;a&O3% eearsscni het rkis ofr revees ROP nda deen fro teaphry +

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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cch"rino hgih nyeogx tnatsusiroa cna vdalesery taffce lung dan eey cooutmse of eretmrp ann" sif.tnlki

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 +0  upvote downvote
submitted by โˆ—divya(75)
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gerea wiht uyr' rhkta.bee ntriyg ot ays atth mrraiyp aglo of ttentamer tihw plepntmuelsa o2 si to amek usre hrete is on inatelr dg.maea

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submitted by โˆ—ergogenic22(401)
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ywh si irctetonpo fo hte cdroioh ue,spxl mfro lnrttrrevuiaicna rpuuter drosnecya ot ilnermag irxamt hoarhmgere tno a sielbspo snarew?

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whoissaad  eys same sneqtiuo, hbto ytoahptnrei nda vaattnrcriiunrle emogmarhe can ucocr due ot ihhg xyoneg lv.el.se +
cienfuegos  I mltnayieks ecosh cdorohi spluex o,ot desab no ikwi semes htsi si osmt monomc uscea of IVH ni mter anstnf:i HIV in eth trermpe nabir auullsy essria omfr teh menralig artxmi arhseew IVH ni teh emtr nisfant artoiniesg mrof teh iordcho .expusl e,eHwrvo it is llaryiptucra ncoomm in etmupearr intfsna ro toseh fo vrye wlo tirhb wh.t.ieg. sotM evantrctailnirru romeghrehsa urcoc ni hte irtfs 72 rhsuo artef irh.bt ehT rski si ndseireca tiwh use of eterrrxpcoalao enmbrame oaxoniygtne in prteemr isannft.aaere#nIkuai/ktmgarrreeois/rpgicnodtwl_w..eiht/hinb/sriiv:aphtBe +
burak  orohcdi spexlu is drefnefit ntha liemngar taixmr +
meryen13  rential aoeehrmrhg is rmeo nomcom atth HIV neev fi ouy ihnkt htat ti ocdul aegamd idrohoc elcsap ryoasdnec to rlgieamn irtaxm .ergrhmhaoe61bs3l./.on80wctwm1nh1/umiw4:n/./p.hevdgiptb +


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 -4  upvote downvote
submitted by โˆ—lilmonkey(63)
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ynnAeo iergand tish usoientq

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lollll i got this right because of This is Us.

+/- alexv0815(10)

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