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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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Flwo taRe = lecytoVi x Slcsintro-oaCse arAe

2 c^m2 x 20 cemcs/ x 06 nsecm/i x 1 0/,L010 3m^c = .24 /imLn

0100, 3m^c = 1 L

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seagull  ,lleW I semids ihts one. I 'tnod enev eefl .bda +78
link981  myyon@kpeca a smlla t,pyo 001 cm3^ = 1 L nto 010c0m^.3 0001 m^3L= 1 L +1
hello  mcpknyaye@o owh ddi yuo tedi oryu nlriiago mcntmoe ot xif oury ?opty +1
winelover777  tertyP user kpyayeon@cm swa ctcrer.o 1 L = 0001 m3^c. iheOstwre teh aeswnr uodwl be .42 +4
drdoom  1 mtcentiree si a d.csiaent (A .el)ni +1
drdoom  If ew ltuymlip a enil by enthrao ,leni ew gte a aerfucs r.aea A( icpee fo )r.aepp +1
drdoom  fI ew piutlylm the eipce of pepar yb rahnoet nl,ie ew gte u.lovme A( .cebu A .)box +1
drdoom  fI ew lfli teh oxb wthi a dlf,iu we iwll haev 1 Lm of this u.dfil +1
drdoom  fI ew vahe a aonhtdsu of ehtes o,esbx we hvea 1 L fo f.ildu +1
drdoom  ooo1, Lm = 1 tirLe = o,oo1 emtterni³ce +1

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

+5/- ribosome01(-3)


 +6  upvote downvote
submitted by ∗nwinkelmann(366)
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'eIv nerev nbee dgoo ta gnnoecvtir nutis (: oll so adh ot sak ym hrbe.tor eH odlt em a:tht

iactdnse × indtecsa = aeistncd2 = aera

,adn

ncseidta × aintdsce × santiedc = istecdan2 × ictaends = dnasecti3 = moluev

ttaGo love clipub soohcl fro enrve bene gtuath atht ... esehg biv(uosoly ve'I dneo the ouanqitse nad f,suft sutj neevr eneb tdlo it hatt /ywtaaht pmlsei o.e)befr nnwgoKi ttha askem irfgignu out teh entqoaiu chum ees:rai

wloF etra = tlyovice × CSA = 02 ccm/es × m2c2 = 04cm3c/se

oT cvoertn to m,Li/n sjut ptluml:yi

cm043/esc × 60 miencs/ × ,01/Lc001m3 = 0420 /0100L, inm = 2.4 n/iLm

Hepo htsi peehd!l

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impostersyndromel1000  ot lal ym ulpibc closoh epesp tou eehrt nad( tno het ienc pbuicl scsohol in irch s,eara eth rela bpiulc o.ssh..loc) we mdea !it +4
angelaq11  yklfnhulTa I aws aghttu woh ot eortvcn n,stui tub let me eltl you that I swa SO tslo no thsi .neo It's EUSSLSE ot kown hwo to od it if oyu ,I( I name I) dn'ot nwok teh ndam mfoluar Dx. uoOlyvisb tog sith one nogw,r btu 'ist doog ot onkw thta if ti eerv socme up ianga nad( I kwon it ntwo)' I areydla konw .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)


 +2  upvote downvote
submitted by seracen(15)
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,hgU ,ryrso tegigtn used ot eth ngtaimtofr, dan ycanlecdtial otpdse ti in hte rowgn c.epla

,aynswyA ot tei,terera I awalys stuj ookl ta eht .tuisn It awnst L,mn/i 'Im negvi ^2cm and /cmcse

oS I ptmll,uiy ot tge emoulv tuo fo ti m^,3c() nhet necvtro oscndse ot ni.seutm

hs,uT i'ts yicbllasa 2xx,62 ni emos ehasp ro omfr tafer apgciln eth adsimlec pirpyaaerlt.op Godo inhgt tehy 'tddin dad taht rarlaupcit n,welirk llI' eatk my idlaerme tmah sslkli dan ubg u,to .haha..

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 +1  upvote downvote
submitted by googaga(2)
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gsTteni ittgnse .312 hsiT si a stte tpos ot ese if nsgtih nu amsrc ble by pyngti a eoctnmm. .aTknhs

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drdoom  i sceprte isht pttteam utb i do'tn knhit ti koswr htat awy +2



 +0  upvote downvote
submitted by ∗usmleboy(19)
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Tish tusioqen aws on my MCAT and I ghulead hwen I swa it.

Thsing you vgea ot k:won mc3^ = mL , neth who ot eonrctv tsn.iu

22^mc x 02 c/csme = m^c403 / esc = 40 Lm / ces

orFm erhe sutj ocnvert 40 Lm / cse ot L / inm

04 mL / ces x 1 L / 0010 Lm x 06 ces / 1 entmiu = .24 L / imn

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 -1  upvote downvote
submitted by ∗kernicterusthefrog(139)
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Jtus ni asec ahtt elyvlo tlilet atoiequn eddprvio yb m@ycepoakny ntsa'w eitqu eonguh ofr y,uo eerhs' a knli to a more tpomlcee anoetxpianl by nahK mdacA.ye ledHpe em, nweh I ooklde at het nqoautei dan d,ais aa?hawa

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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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