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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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lowF Rtea = liyVeotc x srtCesalic-nooS eAra

2 2m^c x 02 csmc/e x 60 m/ecnis x 1 00L1/0, ^mc3 = 24. /Lnim

001,0 cm3^ = 1 L

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seagull  W,lel I simsed stih neo. I todn' evne lfee .adb +78
link981  opay@myknce a lsmla pyot, 001 3cm^ = 1 L tno 01.m0c03^ 0010 L=^m3 1 L +1
hello  mcyaonpke@y who ddi ouy dtei ouyr gilioarn momcetn to ixf yrou otp?y +1
winelover777  tPyrte seur ekymaynpoc@ was recco.rt 1 L = 1000 3c.m^ erwshiteO the rewnsa ldwuo eb .24 +4
drdoom  1 erectminte is a c.istdnae (A elni). +1
drdoom  fI ew pumlliyt a ienl by naohtre lein, we get a fsruace e.raa (A iecpe fo rep.ap) +1
drdoom  If we ilmuyltp het iepec of eparp yb ahtonre nlie, ew get .vuleom A( ce.bu A o.)xb +1
drdoom  fI ew llfi the box wiht a ifd,ul ew lwli avhe 1 Lm fo iths uldif. +1
drdoom  If ew ahev a ahndstuo fo ehset e,obxs we vahe 1 L of dful.i +1
drdoom  oo1o, mL = 1 Litre = o1oo, rmte³inteec +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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'eIv rneve bnee dgoo ta einvnrogct intus :( lol os had ot ska ym .ehortbr eH ldto em :thta

idaecstn × idtecnas = iescantd2 = eara

,nad

dactsnei × iactedns × dtcisnae = iasedtcn2 × cdinaste = saidenct3 = lvomeu

Gtaot velo pibluc slhoco fro eernv eben tgatuh htat ... hgsee uilb(vosyo v'eI enod eht etoinauqs adn tsuff, sjtu eevrn ebne dlto ti atth /thaywta spmeil bfo.)ere wKngnoi that easmk rgugiinf tuo eht qnuitaeo cuhm s:reaie

oFlw ater = eivtcylo × ASC = 20 es/ccm × mc22 = cm403cs/e

oT eroctvn to niLm,/ just it:lpumly

04mc3sc/e × 60 incm/es × ,m100c0L1/3 = 2040 /0,L001 nmi = 42. /nLim

opeH itsh dhlp!ee

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impostersyndromel1000  ot all my pilubc shlcoo peeps otu ehetr ad(n nto hte einc bcupli hocslos in chir reaa,s eht real publci hc.looss).. we aedm it! +4
angelaq11  allTuhnkyf I was tthgau hwo to vcenort ,usnit tub elt me letl uoy ttah I asw SO sotl no sthi .eno 'tsI EUSSLES ot nwko woh to do ti if yuo ,(I I mane I) dn'to kwno teh mnad umrloaf .xD bvuyoslOi tgo iths eno ,orwgn ubt is't godo to oknw hatt fi ti vere cosem up gaain (dan I nwko it wtno') I aedyrla nowk 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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Uhg, rrs,oy enitggt eusd ot the frnia,otmtg and taindclacely pdseot it in hte orgnw apce.l

wAs,yany ot riaettee,r I yswlaa sujt kool ta het .nutis It tnwsa Lm,/in 'mI niegv ^2mc and secmc/

oS I ltimpuy,l to egt muelov uto fo ti ^c(m),3 ehnt ntcrove oscedns ot ntiusm.e

uThs, 'tis yailsclba x,2x26 in soem hseap or fomr efatr aiglncp teh mcdsliae lpp.rapyatoier oGdo ithgn thye 'ddint add that ltacprairu lke,nriw ll'I etka my aermleid amth lisskl adn gbu t,ou ha.h..a

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 +1  upvote downvote
submitted by googaga(2)
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sTntgie gtesnti 32.1 hiTs si a test ostp ot ese if gtinhs un cmrsa leb by gpntyi a .neocmtm s.haknT

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drdoom  i tsrpeec sith tmpaett tub i o'ndt inthk ti owrks tath yaw +2


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 +0  upvote downvote
submitted by ∗usmleboy(19)
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ihsT qoenstui wsa no ym TMCA adn I gduelah newh I was ti.

hiTgns you geav to w:nko 3m^c = mL , tehn who ot etrcvno i.sutn

^m2c2 x 02 /ccsem = 0c43^m / sce = 40 Lm / ecs

omFr ehre tsuj crnvoet 40 Lm / cse ot L / nim

04 Lm / cse x 1 L / 0100 mL x 06 ces / 1 ueintm = 42. L / nim

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 -1  upvote downvote
submitted by ∗kernicterusthefrog(139)
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Jtsu ni case ttah veoyll leiltt eauioqtn preiddvo by a@cpyyenomk tasw'n qtiue ueoghn orf you, ers'he a likn ot a orme lmectepo elaaxtninop by anKh ac.ymedA ledpeH ,em hnew I looekd ta hte nieqouat dna idas, aaa?awh

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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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