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NBME 22 Answers

nbme22/Block 1/Question#9 (reveal difficulty score)
A 54-year-old man has an aneurysm in the ...
2.4 🔍 / 📺 / 🌳 / 📖
tags: calculation

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 +17  upvote downvote
submitted by keycompany(351)
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lowF tRea = ceitVyol x cle-tioaroSnsCs eAra

2 2c^m x 20 s/ccme x 60 csime/n x 1 0,001/L ^cm3 = 24. iLmn/

001,0 3cm^ = 1 L

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seagull  eW,ll I ssedim htsi .noe I od'nt nvee leef .dab +78
link981  ayy@cpemonk a slalm ,poty 100 3^cm = 1 L not m03c1.^00 00 10 =3L^m 1 L +1
hello  kc@eanmpyyo woh ddi oyu edit oyru rlniiaog oemcmtn ot fix uory yop?t +1
winelover777  yretPt rsue kmyay@enopc wsa crort.ec 1 L = 1000 ^m3c. wOsirheet het asewrn oduwl eb .24 +4
drdoom  1 teeimrtecn is a dtsin.eac A( l.n)ie +1
drdoom  fI ew llymptui a lein yb aertonh lne,i ew teg a erufcsa r.aae A( epcei fo e)p.par +1
drdoom  fI we ytllimpu eht epeci fo repap by rhtanoe ,ilne ew get levuom. (A e.cbu A x.o)b +1
drdoom  fI ew illf the xob iwht a lud,if we lliw vaeh 1 Lm of hsit .dfuli +1
drdoom  If we vhea a dosunath of etehs o,esxb ew veah 1 L fo ul.dif +1
drdoom  ooo1, Lm = 1 eLrit = 1oo,o iete³ncetrm +1

if one still doesn't understand to add on .. 1000 cm^3 = 1000 ml 1000ml = 1 Litre



 +6  upvote downvote
submitted by nwinkelmann(366)
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vIe' vnere bnee ogod at rinnetocvg ntius (: lol os ahd ot ask ym o.hrtber He odtl em th:ta

tdecnisa × ctdasien = tnsidcea2 = aaer

,nda

incetasd × cetsinad × entdcais = ctesinad2 × nedcitsa = isntdace3 = meuvlo

Gtoat lveo lpbuic ohcosl orf reenv eben tgtuah thta ... gehes voyil(sbou 'vIe neod the tinqsuaeo adn su,tff stju veenr eben dolt it ahtt ywtah/ta silpem bo.e)fre woKngin atth askem uringigf out the eqtinuao umch aeires:

olFw trea = tlecvoiy × SCA = 20 mscec/ × c2m2 = 0c4m3ce/s

oT ntervoc to nLmi/, utsj umlptlyi:

04cm3/ces × 06 mcenis/ × 01L,cm/0103 = 0240 0/01L,0 nmi = .24 /inLm

pHeo tshi eeplh!d

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impostersyndromel1000  ot lal ym lbcpui ooshlc spepe uot etreh ad(n ont het einc cublip cooslsh ni ihrc esaa,r eht lear libucp c.l.hs)o.so we amed it! +4
angelaq11  llyahkfunT I swa ahtgut woh ot vtreonc t,sniu but lte em ltel ouy thta I asw SO ltos on hits e.on tIs' ELSEUSS ot wkon woh ot od ti fi uyo (,I I aemn I) dont' knwo hte adnm rufmaol .Dx bvliOyosu tog htsi eon rgon,w tbu sti' dogo ot nokw htat fi it eerv mesco up ingaa (and I kwno ti )wtno' I aeaydrl oknw ti. +2

This is all you need for conversions:

1cm3 = 1 ml ... thus 40 cm3 = 40 ml

So to make it faster I would do it like this

40 ml/sec * 60 sec/1min * 1L/1000ml = 2.4 L/min

+3/- majoav1(2)


 +2  upvote downvote
submitted by seracen(15)
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gU,h ,yorrs titnegg duse to the itarmgf,ton dna ldtaayceilnc dtpsoe it ni het wgnor .apelc

ynw,asyA ot ,eaeiettrr I slawya ustj ookl ta het sut.in It ntwas /,nmiL 'Im ievgn 2c^m dna /ecmcs

oS I ptl,lyumi to teg ovuelm tuo of ti 3^(),mc ethn ctoevrn cdnesos to tu.snime

s,Thu si't byllicaas 226xx, in emso sheap ro morf fatre capigln the cmdseial prpapoaielt.yr oGod gtnih htye in'dtd dda htta aclputrira ile,nkrw ll'I tkae my lmdaerei ahmt lsklsi nda bug uto, hha.a..

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 +1  upvote downvote
submitted by googaga(2)
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egsTint esingtt 123. hTsi si a stet tops ot ese if tnghis un sacmr ble yb ipnytg a mn.eomct n.hsakT

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drdoom  i ctpesre isht tatpmet btu i 'nodt nhtik it orkws atht wya +2



 +0  upvote downvote
submitted by usmleboy(19)
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hisT osuteqin asw on my MTCA adn I lhauged when I was it.

gTishn uyo vage to :kown c3^m = Lm , nhet who ot vtorecn n.tsui

c2m^2 x 20 c/emsc = mc340^ / cse = 40 Lm / sce

rmFo ehre tsuj nevtcor 40 mL / sce to L / nmi

40 Lm / cse x 1 L / 0010 mL x 60 ecs / 1 tmnuei = 4.2 L / mni

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 -1  upvote downvote
submitted by kernicterusthefrog(139)
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utJs in seca that oylvel etltli utqeiona dodrpvie yb ky@cpenymao 'wsant utqie oenguh fro you, er'esh a lkni to a moer eelotpcm xetnnipoala by Khna aedyA.cm lHeped em, when I oledko at hte qioauent dna dsi,a haa?awa

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If, like me, you dislike memorizing formulas, but are okay doing the actual math, I always just look at the units. It wanted L/min, and I had to get it using cm^2 and cm/sec...

Well, I know cm^3 gives volume (L) after bashing out a few conversions, so multiply it is!

Then I know to turn seconds into minutes, so multiply by 60.

Now, at this point, I knew my decimals were off, but still, 4x6 = 24, so it's some version of that. Had they included 24 or .24 as answers, I'd have actually had to pay attention to my conversions.

Anyways, I hope that helps!

+4/- seracen(15)


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