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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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lFow Rtea = tleycVio x o-aScsCneorstli aeAr

2 m2^c x 02 secm/c x 60 m/cisne x 1 L00,/10 m3c^ = .42 n/Lmi

000,1 ^c3m = 1 L

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seagull  lW,le I idmess htsi e.on I dnto' enve efel bd.a +78
link981  eaycyn@omkp a llsma py,to 010 3mc^ = 1 L ont ^.00c013m 1000 m3^=L 1 L +1
hello  em@koanyycp ohw idd oyu dtei oyru oarliign neocmmt ot ifx oryu p?tyo +1
winelover777  trePty user npcekym@yoa was .tercocr 1 L = 0001 3c.^m Osietherw hte awrsen udwlo eb 4.2 +4
drdoom  1 eintremcet si a itsnaecd. A( l).ien +1
drdoom  fI we lmyplitu a lnie by hotraen ei,ln ew etg a cusaefr raea. A( ceipe of p.arpe) +1
drdoom  If ew lulmytip hte pceei fo rpeap by tenhaor ile,n ew teg levm.ou (A ue.cb A .o)bx +1
drdoom  fI we lifl eth obx ihtw a d,fuli ew lwil vaeh 1 Lm of iths liu.df +1
drdoom  fI ew veha a danthous fo sehet sb,eox we ehva 1 L of l.iduf +1
drdoom  ,ooo1 Lm = 1 eLtir = ,ooo1 ³teiecremtn +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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vI'e nreve bnee gdoo at nroetvcgni itnsu (: oll so dha to ask ym rbetor.h eH dtol me :htat

tieascnd × dstinaec = dctseian2 = aaer

and,

iedntacs × ascenitd × ntaedcis = ncteidas2 × sictenad = dcensait3 = mveoul

tGaot lveo bcuipl chloso rof vrnee eneb ghtuta taht ... heseg vslo(oyibu I've endo teh tseainouq adn ,stffu tujs enevr bene ldto ti ttha aywatth/ lsipem r.foe)be gKnoniw tath smkea rgiugfni otu eht eotaquni umch iersae:

Flwo aert = ocvielyt × CAS = 02 smecc/ × 2mc2 = m0c43cse/

To ntovrec ot n,Lmi/ jtus ut:iyplml

m40c3/ecs × 60 n/iscem × 0c1m0L,1/03 = 2040 1,0L00/ nmi = 42. Lm/in

Hepo hist lde!phe

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impostersyndromel1000  ot lal ym ipulcb lhosco peesp out trhee n(da tno eth ncie upcbli locossh ni ichr rsae,a hte arel upclbi .s.sc).oolh we eamd it! +4
angelaq11  lynTlfkuha I swa uathgt woh ot erotcnv i,ntsu ubt elt me etll oyu thta I was SO tlos on hits eno. tsI' USLSESE ot nwko how to od ti fi uoy ,(I I mnae I) 'otdn knwo hte dnma moafurl .Dx yOuosblvi got thsi eno gw,onr tbu 'tis ogdo ot know atht fi ti veer msoec pu ainag na(d I nkwo it )w'ton I yarelad nwko 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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hUg, or,rsy gegtint sued ot the noattigmr,f dna laiaycctneld tdpeos it ni the nworg .eclpa

nAwysya, to er,iateter I waasly sjut okol ta eth usnti. It ntsaw Ln,im/ mI' ienvg m^c2 adn /csecm

So I tlmy,pilu ot egt emvluo tuo fo ti ^)m3(c, nhte voncret dcessno ot tum.inse

uTh,s t'is claliasyb ,226xx ni smoe hsaep ro omrf teraf plniacg eth imdlaces .epaltiyrapopr dooG itgnh htey i'tdnd add taht uprctlaira wie,lrkn Il'l keta my dleraiem mtha llisks and ubg ,uot .a.ah.h

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 +1  upvote downvote
submitted by googaga(2)
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eTsnigt nsgtiet 13.2 isTh si a tste opst to ese fi nstihg nu amscr lbe by typngi a nmmt.ceo anTksh.

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drdoom  i ceperts ihst tapmtet utb i otnd' nihtk it kosrw htat ayw +2


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 +0  upvote downvote
submitted by ∗usmleboy(19)
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siTh quoitnse was no ym TCMA nad I dguaelh wehn I aws t.i

gTsnih yuo geav to o:knw 3^mc = mL , hnte woh to etrnocv situn.

c^m22 x 20 m/cecs = 3m^40c / sce = 04 Lm / esc

rFom hree utsj rvncoet 40 Lm / cse to L / imn

40 Lm / sce x 1 L / 0100 Lm x 60 sec / 1 menitu = 4.2 L / inm

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 -1  upvote downvote
submitted by ∗kernicterusthefrog(139)
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Jtus in cesa ttah olvely llitet qtiuonae eiodpdrv by epmnayc@oky nwts'a eqiut nouhge fro u,oy s'here a lnki to a roem ptelcoem oetapnixlan yb ahnK dyAcmea. Hpdeel me, hnwe I edoklo at eht netaqiuo nda ad,is aaahw?a

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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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