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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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wFlo aetR = cVleioty x orsaseitlnoc-CS Arae

2 ^c2m x 02 escc/m x 06 c/emsni x 1 ,/001L0 ^c3m = .42 /nLmi

0100, ^cm3 = 1 L

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seagull  l,lWe I idssme itsh .one I not'd neev eefl b.ad +78
link981  pnayy@oemck a allms topy, 001 ^m3c = 1 L ton 0cm031.0^ 1000 =m^3L 1 L +1
hello  cyk@mopnaye ohw idd ouy edit uoyr rilgiona oemmnct ot ifx uryo tyo?p +1
winelover777  tretPy seur cam@oynpeyk wsa re.ocrct 1 L = 0100 ^m3.c Ohwetresi eht nerswa loudw be .24 +4
drdoom  1 teniermcet is a teicdna.s (A )in.el +1
drdoom  If ew utliyplm a nlie by toenrha nl,ie ew etg a rceuasf .area A( ceipe of prpa)e. +1
drdoom  fI ew tplylmui hte ceeip of reppa by eoathnr nli,e we get lvemo.u (A ube.c A o.x)b +1
drdoom  fI we llfi het xob hitw a fui,ld we llwi eavh 1 Lm of tihs d.uilf +1
drdoom  fI ew veah a todsuhan of eeths bse,ox we hvea 1 L of f.ilud +1
drdoom  oo1o, Lm = 1 trLei = 1o,oo trteceeim³n +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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eI'v reevn enbe odgo at rgnnoeivtc utnis (: lol os adh ot kas my t.horber eH tdlo em ta:ht

nsicetda × dacstein = sctadeni2 = eaar

nad,

idseantc × sadnicet × tascenid = detsaicn2 × eicnstda = sitcdaen3 = mveulo

aottG eovl ulcpbi oolcsh rfo rneve eneb agtuth ttah ... ghese ovuisy(lbo eI'v noed eth tiaonesuq nad tff,us ujst evrne nebe tdol it tath wya/ttah ilespm .beroe)f niKgonw htta ksame giuinfgr otu eth ienatuqo hcum rease:i

lFwo eart = viteclyo × ACS = 20 cm/sce × 2mc2 = 0c4m3ces/

oT vocernt ot /i,nLm usjt pumyil:tl

0cm43/cse × 60 ems/cni × 101c/,Lm003 = 4200 0L0,/01 min = 2.4 /minL

peoH hsti !lheedp

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impostersyndromel1000  ot lla my bcuilp osholc pspee tuo hreet (and tno hte iecn pclubi chsloso in hicr sera,a the arle ilcpub hslc..oo)s. we edam !ti +4
angelaq11  fllkTuhyan I aws ttgauh owh to vcnerto units, but elt me ltle you that I saw OS ltso on hist ne.o s'tI SSESELU ot nwok who ot do it fi uoy (,I I maen I) dnot' wnko het dnam alfmoru .Dx uiovylOsb gto sthi neo wgron, ubt i'ts gdoo to wokn tath fi ti rvee ecmos pu agina (dan I wkon ti ownt') I layadre nowk i.t +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, syrr,o gttegni euds ot hte nratfmo,tig nad ilelcycaandt dpeots it ni eth ngwro pc.lae

,Awyaysn ot eterat,eri I aysalw utsj ookl at het u.nits tI swatn m,iLn/ m'I ngevi m2c^ nda /esmcc

oS I tuim,yllp to gte veouml uot fo ti m,c^(3) hnet tcenovr ncdesos ot emst.niu

Thus, is't blaslyica ,x26x2 in soem espha ro rmof refta nipaclg teh lcemiasd pyploa.areiprt odoG githn heyt 'ddnit dad that patarrcilu inwkrel, Il'l take my readlime tmah lislks adn ugb out, h...haa

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 +1  upvote downvote
submitted by googaga(2)
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inetTsg tisngte 123. siTh si a ttse stpo ot ese if hgisnt un crmsa leb yb itgpyn a cotemmn. knh.Tas

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drdoom  i esprtce this ettapmt utb i o'tnd ktihn ti oksrw taht yaw +2


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 +0  upvote downvote
submitted by ∗usmleboy(19)
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siTh tqseoniu was no my ATCM adn I uedhalg ehwn I asw t.i

shniTg uyo eavg ot onw:k m^c3 = Lm , neth woh ot vnoretc utis.n

22^cm x 20 /ccsme = 0c4^m3 / ces = 40 Lm / sce

mFro eher juts cevtnro 40 Lm / cse to L / inm

40 mL / esc x 1 L / 0100 Lm x 60 ecs / 1 inmtue = 24. L / min

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 -1  upvote downvote
submitted by ∗kernicterusthefrog(139)
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Jsut ni seca htta ylvoel littel toauieqn veripdod yb eay@kcynmop nts'wa uqtei gouhen ofr uo,y rshe'e a nlik to a rmoe eoltempc lepantainox yb hanK ameyAcd. eledHp e,m wenh I olekod at eth tueoniaq dan ds,ia 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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