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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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lwoF etRa = ltieyocV x tslcSoesri-onaC aAer

2 mc^2 x 20 emcc/s x 06 nm/esci x 1 001,/L0 cm3^ = 24. L/nmi

,0100 3^cm = 1 L

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seagull  elWl, I emsisd shit no.e I d'otn eenv feel a.db +78
link981  pekaomyc@ny a lslma to,py 010 ^3mc = 1 L otn m03^0c.01 00 01 ^=m3L 1 L +1
hello  mcny@keypoa owh did oyu idet yoru igairnol tcommen to ifx uryo ?pyto +1
winelover777  etrtyP eusr y@akpcnemyo swa trorc.ce 1 L = 0001 3.cm^ srtweieOh eth newsra dwluo be 42. +4
drdoom  1 ecrniemtet si a itescna.d A( e.ln)i +1
drdoom  If we tpluliym a niel by oehnart iel,n we tge a sfarceu r.eaa (A epcie fo .)rpaep +1
drdoom  If ew iuyltplm teh eicpe fo prpae by onaehrt ine,l ew get ou.emlv (A u.ecb A .bx)o +1
drdoom  fI we illf the oxb hwti a fdilu, we lliw veha 1 mL of thsi i.udlf +1
drdoom  fI ew heva a nudahtos fo seteh e,sbxo we ahev 1 L fo .ldfui +1
drdoom  1ooo, mL = 1 Lrtie = ,ooo1 tmnite³erec +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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Ie'v eernv nbee dogo at nvceotring iutns (: lol os hda to ksa ym bhotrer. eH ltdo me :ttah

edctiasn × ctniased = eindcsta2 = area

dn,a

daictsne × cdansiet × eaitnscd = tinescad2 × staciend = csiedatn3 = veomlu

tGota ovle lpicub ohoscl ofr veenr nbee taghtu htta ... shege oo(liuyvsb 'vIe odne eth useqiotan nda stuf,f sujt evnre neeb tdol it atth thyaawt/ sepilm f).broee oKgwinn ttah ksema riggiunf out het uqetioan uhcm e:rsaei

woFl rate = ictoyelv × ACS = 02 sccem/ × 2cm2 = 4mc03/sec

To nevrtco to im,Ln/ sjut lyl:tuipm

c40m3c/es × 60 smcein/ × cm000L,11/3 = 0402 0L0,/10 inm = .42 m/Lin

oeHp tsih lp!dehe

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impostersyndromel1000  ot all ym bluipc cooslh ppsee uot tereh nd(a tno teh inec ulibpc lhososc ni irch es,ara the lera uilbpc .lsh)oosc.. we emad t!i +4
angelaq11  lnhufakyTl I asw ttugha how ot rnotcev iusnt, utb elt em tlle uyo atth I swa OS slot no htis n.eo I'ts SUSELES to owkn woh to do it fi uyo I(, I maen )I dn'ot onwk teh dnma aoulfmr Dx. Obsyoliuv gto hist one r,wong ubt t'is ogod to wnok thta fi ti eerv csoem up aaign na(d I nkwo ti )own't I aryedla okwn 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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ghU, r,orsy iegtgtn sdeu ot het ,gatfitrmon dna yctnaladcile stdope ti ni het rnwgo clpea.

ns,ywaAy to rrette,aie I ylwsaa stju oklo ta hte snt.ui tI ntsaw nLim,/ I'm vgien cm2^ dna cmesc/

So I lyptl,imu ot teg eulomv otu fo ti ^3c,)(m etnh ncvrtoe sedcons ot ienmtus.

uTsh, 'sti ylisacbla x62x,2 in semo pahse ro orfm tfrae lngcpia hte mdcailes aptrpo.pliyera Godo hintg ethy 'itndd dad ttah irtclapura rlnkwi,e Il'l ekat my riedlmea mtha siskll and gbu uo,t h..haa.

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 +1  upvote downvote
submitted by googaga(2)
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Tteisng titngse .231 hTsi si a stte opst ot ees if inshgt un csmar ebl by gpnity a o.cmtenm nkTash.

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drdoom  i tcpseer shti tattepm but i ntod' ktnih ti swrko hatt ayw +2


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 +0  upvote downvote
submitted by ∗usmleboy(19)
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hTis ostienuq aws no my MTAC dan I alhudeg newh I wsa it.

gisnTh oyu geva to ko:nw c^m3 = Lm , tneh ohw ot vrotcne tu.nis

^22cm x 20 cmcs/e = 3c4^m0 / sec = 04 mL / sec

Fmor rehe just nvtecor 04 Lm / sec ot L / mni

40 Lm / sce x 1 L / 0010 mL x 60 ecs / 1 unmiet = 4.2 L / mni

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 -1  upvote downvote
submitted by ∗kernicterusthefrog(139)
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sutJ in case thta lyvleo etillt qaeiount erdodvpi yb mynkc@ypoae s'wtna qtuei gnhueo fro yuo, hsre'e a klin ot a rmoe mceetpol xaatopleinn yb nhKa Adyace.m plHede ,em enwh I keoodl ta het toaqneui adn is,da aa?awha

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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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