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Retired 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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owFl aRet = leoctVyi x s-ctCrsoioalnSe eraA

2 ^m2c x 02 cc/sme x 06 sem/inc x 1 L000/,1 ^cm3 = .24 /niLm

01,00 cm3^ = 1 L

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seagull  el,Wl I ssiemd hsit oe.n I ot'dn veen fele .abd +78
link981  oapmyec@kny a lasml oytp, 100 3mc^ = 1 L ont .01m30^c0 0100 3^=mL 1 L +1
hello  knm@ypeaoyc how idd ouy ited yrou onlrgaii memtnco ot fxi yuro ?yopt +1
winelover777  terytP resu ea@ycypnomk swa rotc.cer 1 L = 0100 m^.c3 hiertwOse hte wesarn owdlu eb .24 +4
drdoom  1 nremeeictt is a ic.etdsna A( i).len +1
drdoom  fI we upilltmy a enil by rteahon l,ine ew get a cferasu ae.ar A( pceie fo e.)rppa +1
drdoom  If ew ytpumlil hte ceepi of aerpp yb ehoartn ,nlie ew egt uem.vlo A( e.buc A ).xbo +1
drdoom  If ew ilfl the oxb hwti a uldf,i ew will eavh 1 Lm of isht fiuld. +1
drdoom  fI we aevh a hdnatuos of ehset ,bsoxe ew heav 1 L of i.ldfu +1
drdoom  1,ooo mL = 1 rietL = o1oo, ecterinem³t +1

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

+5/- ribosome01(-3)

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 +6  upvote downvote
submitted by ∗nwinkelmann(366)
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ev'I vnree eneb odgo ta rnngtcveio itusn (: lol os dah to ska my robet.hr He dotl em :ahtt

tdascine × eindcats = aiecsndt2 = area

and,

sdaicent × adtnisce × nteisacd = tdanesic2 × sacditen = iesndtca3 = evolum

taoGt lveo ipucbl lhocos rof nreev eneb httagu hatt ... ehesg isbuyoovl( vIe' endo hte iqaunotes nda uts,ff sutj eernv bene told it that hta/tawy slepim reeob).f ngKiwno ahtt semak nfriggiu tuo the ioeauntq hmuc iaes:er

owlF erta = vticeoyl × SCA = 02 s/cmce × cm22 = cm043c/se

oT vnoecrt to inmL/, tusj lpiuym:tl

0mc43ces/ × 06 /mnecis × Lmc/0001,13 = 2040 ,L00/01 mni = 42. /imnL

oeHp stih phld!ee

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impostersyndromel1000  ot lal my ilcpbu chsool pesep uot reeth (and not teh cien cbilpu osschol in rihc a,raes the lrea pbluic losso.hc).. ew emda !it +4
angelaq11  lykfnuhaTl I swa atgthu woh ot veortnc nui,ts btu tle me etll uyo htat I asw OS solt no thsi eo.n t'sI SUELSSE to knwo ohw to od it fi you I(, I amne I) to'nd owkn eht dnma lorufma Dx. Olbvouisy tgo sith oen orng,w utb sti' odgo ot okwn taht fi ti reev omsce pu angia (dna I nowk it t'nwo) I dryaale wnok it. +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)

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 +2  upvote downvote
submitted by seracen(15)
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,Uhg rsro,y tgtgien sedu ot eht ntgrf,imato adn deccylnaalit etdsop ti ni eht wognr alpce.

yay,Aswn ot ,eierttear I saalwy ustj oklo ta hte ti.snu tI astnw Lim,/n 'mI nigve c2^m dna mcs/ce

So I puylimt,l to tge evluom uto of ti ,3c)(^m ethn tercvon ednsocs to u.sientm

,sTuh ist' blacialys 262xx, in semo aepsh or form atefr iancpgl eht silcemad ppalyrei.rapto Godo gtnhi ythe ndi'dt dda ttah uraltrpiac rikln,we ll'I aekt my eirmdael amht slliks nad bgu to,u .a.ha.h

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 +1  upvote downvote
submitted by googaga(2)
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stnTegi esitntg 21.3 sihT si a stet tpos to see if ngtshi nu mrsca ebl by tyinpg a mnocem.t as.nhkT

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drdoom  i rtcpese sthi amttpet but i tndo' think it wsrko that ayw +2


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 +0  upvote downvote
submitted by ∗usmleboy(19)
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hsiT sinutqoe saw no ym ATMC dan I gaduleh hnew I wsa .it

hTsgni you egva ot onw:k ^m3c = Lm , hetn who to nteorvc n.uist

22^mc x 02 m/scce = m0^4c3 / sce = 40 Lm / ecs

rFom erhe sjtu eocvtnr 40 Lm / ecs to L / mni

04 Lm / sec x 1 L / 1000 Lm x 06 cse / 1 mituen = .24 L / min

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 -1  upvote downvote
submitted by ∗kernicterusthefrog(139)
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stuJ in ecsa htta yllove tieltl outeqani revpdoid by pyoymakec@n a'stnw uitqe gnoeuh for oy,u rhsee' a lnki ot a oerm lcepeomt lonteinaapx yb nKha eaymdA.c dHleep ,em nhew I eookld ta teh tuenoiqa dna sid,a aaaaw?h

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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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