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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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oFwl Rtea = cVyioelt x iolsCanesctS-or eaAr

2 c^m2 x 02 /sccem x 60 isn/ecm x 1 ,1/00L0 3cm^ = 24. n/Lmi

100,0 c^m3 = 1 L

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seagull  elWl, I simsed hsti .one I dnt'o enve lefe d.ab +78
link981  aonce@ykypm a lslam ot,py 001 mc^3 = 1 L ton 03m0c.0^1 1000 ^3mL= 1 L +1
hello  cn@aokypemy owh idd ouy ited uyor lorniiga tmnecmo to ixf uroy tpy?o +1
winelover777  rteytP sure kym@yenoapc swa ctorcre. 1 L = 0010 c.3^m twrhieseO eht snwear dwulo eb .24 +4
drdoom  1 tceitnerem si a dct.sanie (A ne.il) +1
drdoom  If we mlyiuplt a ilne yb teaonhr ,lnei ew egt a fscraeu .aaer (A peiec of rpe)pa. +1
drdoom  If we timllyup eth epeic fo earpp by horaent niel, we teg em.ulov A( ce.bu A )x.ob +1
drdoom  fI we llfi eht bxo with a d,liuf we wlil veha 1 mL of htis liduf. +1
drdoom  fI we heav a nuhtoads of eesth o,bxse ew heav 1 L fo ui.ldf +1
drdoom  1ooo, mL = 1 irLte = o1,oo r³ittenemce +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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Iev' eevnr eenb godo ta cignorevnt sitnu :( llo os ahd to aks my obrt.hre He tdol me :thta

casetidn × taidscen = cdtsanei2 = aaer

nd,a

cnedsita × csetaidn × sednitca = intsaced2 × citnsade = anstedic3 = vmoleu

tatGo olve bcilup soohcl ofr rneve ebne tuthag hatt ... gehes osb(iloyvu eIv' deon eth teoaisqun and ,uftsf sjut reenv bene tldo it hatt t/hwaayt lesimp orbf)e.e wKngoni htta makse iuggnirf out het tinqeaou hcmu :iereas

olwF aetr = oliectyv × ACS = 02 c/mesc × 2cm2 = 0cm43e/cs

oT vctnoer ot ,i/nmL sjtu mpyul:til

cm403/sce × 06 enim/cs × L/0c,m10103 = 2040 00L1,0/ mni = .42 niL/m

peHo isht !delphe

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impostersyndromel1000  to lal ym lpbcui ocsloh pepes out eterh nda( nto the ince ucbipl oolschs in rihc sara,e het rlea ilpbuc os.)hls..co ew aemd !ti +4
angelaq11  ykaluhflTn I asw ghautt how ot onrvcet n,stui but tle em ltle oyu tath I aws OS tols on tsih e.on Its' SUSLESE ot wkon how ot do it fi oyu (,I I eman I) otdn' konw hte madn raomulf D.x yivlsoOub got sith oen orwn,g ubt s'it good to know thta if it erve emocs pu anaig d(an I wkno ti o)w'tn I raeadly nkwo t.i +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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hUg, y,sror tntggei dsue ot teh m,oafnrittg nad ctaelcilyand tpdsoe ti ni teh nwgro e.cpla

,syawnyA ot eter,aetri I yslaaw jtsu loko at the nu.sit tI wnsat Lin/,m Im' ngvei c^m2 nad c/escm

oS I yi,lmputl to get oleumv tou of it 3(mc)^, neht vocrtne odessnc to numites.

s,Tuh it's sllcyaiba 6xx2,2 in seom epsah ro ofmr efrta gcnlapi eht acmdslei p.alapritryepo odoG ntghi hyet dtid'n add hatt itcraraupl wlkiner, lIl' aetk ym rldaeiem hatm slilsk adn ugb ut,o ha..a.h

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 +1  upvote downvote
submitted by googaga(2)
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nteiTgs istegnt 2.13 hisT is a etst tpso to ese fi ghitsn un cmars leb yb tyingp a n.ommtce nh.kTsa

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drdoom  i etrceps hist teamtpt but i d'ton tnihk it srwko atth wya +2


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 +0  upvote downvote
submitted by ∗usmleboy(19)
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hsTi tuqoisne was no my MATC nda I ghluade wehn I aws it.

hsgiTn ouy eagv ot :wokn mc3^ = Lm , tenh ohw ot tcvrneo tu.sni

^2m2c x 02 seccm/ = 4^c03m / ces = 04 mL / sec

From here jtsu cvenrot 40 mL / ces to L / imn

04 Lm / ecs x 1 L / 0100 mL x 60 sec / 1 mutine = 4.2 L / imn

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 -1  upvote downvote
submitted by ∗kernicterusthefrog(139)
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utJs ni seac hatt lveylo tletli iqaotenu iredovpd by apokeycnm@y s'awtn eutiq oheung fro y,ou 'ehres a nlik to a remo leopemtc iaaoxnplnte by Knah aAym.ecd dpelHe ,me wenh I oelodk ta het utqoeani dna i,ads a?aawha

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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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