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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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Flow Raet = ltyoiecV x seacso-orStlinC eaAr

2 ^mc2 x 02 /ccesm x 60 csemn/i x 1 L0/,001 mc3^ = 42. im/Ln

10,00 ^m3c = 1 L

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seagull  ellW, I emsdis iths e.on I ont'd nvee elfe bad. +78
link981  myoykpnce@a a samll t,pyo 100 3cm^ = 1 L nto ^.cm00031 0 001 L=3m^ 1 L +1
hello  ecapnky@myo ohw idd uoy eidt royu ogiilnra ntomecm to ifx ryuo p?oty +1
winelover777  tePyrt rues nyopyackm@e wsa r.rcteco 1 L = 0100 m.3^c seiterwhO hte wnrsae dulwo be 2.4 +4
drdoom  1 nitecrteem si a ndtaci.es A( )en.li +1
drdoom  If ew tmplilyu a ilen yb hatnroe n,eli ew tge a eacfurs .eaar (A eiecp of pre).pa +1
drdoom  fI ew tlypiulm the epcei fo eappr by otraneh nle,i we egt .uovmle (A ub.ce A bx)o. +1
drdoom  If ew llfi het oxb tiwh a flid,u ew liwl vhae 1 mL of sith dulif. +1
drdoom  If ew aveh a untaodsh fo teehs bxes,o ew ahev 1 L of fild.u +1
drdoom  1,ooo mL = 1 Lteri = 1o,oo cetiemr³tne +1

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


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 +6  upvote downvote
submitted by nwinkelmann(366)
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v'Ie vrnee nbee dogo ta veongirtnc tisnu (: lol os dah ot kas ym ob.rrthe eH dotl me ht:ta

netasicd × icsdtnae = stdciena2 = aera

ad,n

sdiecnta × iteancds × cntsdaie = caeinsdt2 × edcistna = nsicteda3 = evouml

oattG elov lbpciu oolhcs fro enerv eenb guhtta ahtt ... esgeh vsiolb(yuo evI' odne eth eqtnasuio and ftu,fs jtsu revne enbe tdol ti that twayta/h iesmpl b.fee)or nwgnoiK thta kmsae uifgirgn uto teh iuqtneoa hcmu ersea:i

owFl taer = cyviotel × ASC = 02 /esmcc × 2mc2 = cm403sce/

To envtorc to L,im/n juts pm:ylliut

0c4m3ces/ × 06 cm/nise × 0,c01L/1m03 = 0402 ,/10L00 inm = 24. i/mLn

eopH hsti pd!eehl

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impostersyndromel1000  ot all my uipbcl hoclso pspee tou rehet and( nto eth einc bcpuil sooslch in ihrc ,arase teh earl ipbluc .)h.scloo.s we dema t!i +4
angelaq11  nkhfuayTll I saw ahtgtu owh ot eontvrc ,isnut ubt tle me letl oyu hatt I aws OS lots no isht n.oe Ist' SELESUS to ownk how ot do it if uyo I,( I eamn )I d'not wkon teh nmda ulrafmo x.D lboOviusy got tsih one rwgno, utb i'st dogo to kwno ttha if ti erev sceom up agina d(na I onkw ti o'wn)t I deryala wkon 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)

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 +2  upvote downvote
submitted by seracen(15)
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,Ugh rrso,y getngti ueds to eht gi,aftnromt dan elcldacinyat dosetp ti ni eth worgn ae.lcp

ynsya,wA to ,rateereit I syawla tsuj ookl at the sn.tui It tnaws Lm/in, m'I given cm^2 nad ecmsc/

oS I ptml,uily to get loveum out of it (c3)^,m tnhe vtroenc sneoscd to umsti.en

sTuh, ist' aiscbllay x2,2x6 ni meso haesp or rmof frate apigncl het dlicaesm aerltpirapop.y dGoo hntgi eyth nddi't dda htta uariraltcp ,wkrnile 'lIl aket my laeedrmi maht lslski and bgu tou, .ahha..

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 +1  upvote downvote
submitted by googaga(2)
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sTtgeni ntseigt 2.13 hsTi si a ttes spot ot ese fi hnigst nu asmrc lbe by pintgy a t.ncmoem .nTksha

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drdoom  i ecerstp ihts tpeattm but i 'tnod kitnh ti orksw ttha ywa +2


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 +0  upvote downvote
submitted by usmleboy(19)
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sTih esitonuq saw no my TMAC nda I ghldeau nhew I wsa ti.

gnTihs ouy gvea to wko:n ^cm3 = mL , tehn ohw ot tcevonr .snuti

2^2mc x 20 sem/cc = 40cm3^ / cse = 40 mL / sec

omrF ehre utsj ovnrtce 04 mL / esc to L / min

40 mL / sce x 1 L / 0001 mL x 06 ces / 1 netuim = 42. L / imn

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 -1  upvote downvote
submitted by kernicterusthefrog(139)
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suJt ni case taht lolvye ttille aioueqtn ipredovd yb ypn@yemcaok at'wsn qetiu gneuho fro yo,u r'ehes a nkil to a ermo etelopmc eponaxtanil yb nKha eaA.ydcm eeHpld em, ewhn I odkoel at eht itunqoea dna dsa,i ah?aawa

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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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