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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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Folw Raet = coyeitVl x casensCitlSoo-r arAe

2 2m^c x 02 cmc/se x 06 cei/msn x 1 0,010/L m3c^ = .42 Ln/im

1000, c^3m = 1 L

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seagull  elWl, I ssimde hits eo.n I tod'n enev lefe b.da +78
link981  cnakoympy@e a mlasl ,otyp 010 cm3^ = 1 L nto 0^.0310cm 001 0 ^m=3L 1 L +1
hello  eyokncmp@ay ohw did oyu edit uyro ilanroig mecntmo ot fix yoru oytp? +1
winelover777  yttPer usre ea@pkyncomy aws oecrc.rt 1 L = 1000 m^c.3 eshirtOew eht esarnw ulodw eb .42 +4
drdoom  1 irencettme is a nt.csdaie (A i.e)nl +1
drdoom  fI ew yupitlml a elin yb orhtnae i,len we teg a erfacsu aer.a A( cipee fo arpep.) +1
drdoom  fI ew luimplyt teh ipcee fo ppaer yb atorhne e,nli we gte uv.meol (A uc.eb A b.x)o +1
drdoom  If we lfli teh xob wtih a dl,fui we wlli heav 1 mL fo ihst i.ldfu +1
drdoom  fI ew ahve a tandohsu fo etesh xo,ebs ew hvea 1 L fo u.difl +1
drdoom  ,1ooo mL = 1 treiL = oo,1o etncemit³re +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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v'Ie enerv neeb ogod at egnvntocir tusin :( llo so ahd ot kas my hteob.rr He dtol em a:tth

cniteasd × tascnied = nidactes2 = reaa

dn,a

eactidns × tandesci × neacdtsi = tnsiacde2 × istandce = enicdsta3 = luoevm

Gttoa evol iblpcu ohslco for enver ebne tguath thta ... heegs (buiolyosv ve'I eodn the uinostaeq adn fts,fu tjus enver eneb oldt ti ttha watyaht/ plemis )ofe.rbe ngnwioK taht akmse uingirfg out the qntoueia chum es:riae

oFwl erat = eltcvyio × ASC = 20 emccs/ × 2mc2 = 0cm43s/ec

To rcvnoet ot mn/Li, utsj :yutlpmli

cm403/esc × 60 n/iemcs × 10c/00m1,L3 = 2400 0,L10/0 imn = 2.4 Ln/im

poHe isth !hpeled

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impostersyndromel1000  ot lla my upblci clhoso seepp tuo ereht (and not the cnei upcibl osslcoh ni chri ar,ase eth rlae ciulpb o.ho)s.sl.c ew dmea !ti +4
angelaq11  Tnflkhauyl I asw gtutha hwo ot cteonrv ,nsuit btu tel em ltle uyo ttah I aws OS lsot no tish o.en stI' SSLUSEE to onkw owh ot do ti if ouy (I, I enam )I t'don nkwo the ndma arlmofu D.x ybOovlsui tgo hits eno nowrg, ubt 'tis dogo to konw thta if it erev smcoe up gaina dan( I kwno it wn')ot I realyda 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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U,hg y,osrr gnigett esud ot teh g,ttfmniaro nad aiclceylntda soetdp it ni the gonwr pace.l

wnAsa,yy to eirere,tta I wlsaya ustj lkoo ta teh .ntsiu It ntwas ,i/mLn 'Im gevin 2cm^ dan /mcsec

oS I im,lptluy ot teg eovulm out fo it cm,)3(^ tenh rceonvt dsoscen to umn.site

,huTs 'ist iacyblsla x2x2,6 ni mose shape or romf taerf ilgnpca teh esiacdml polt.arreayppi dooG ghnit thye tni'dd dda ttah ripaluartc w,nleirk lIl' take my melreadi mtha slskli nad gub out, a..ahh.

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 +1  upvote downvote
submitted by googaga(2)
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Tetigns nesttig .213 sTih si a test psto ot see fi ihstgn nu msarc bel yb ypitng a emc.otnm skhTna.

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drdoom  i teseprc hits attmtpe tub i odt'n khtin ti rwsok hatt ywa +2


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 +0  upvote downvote
submitted by ∗usmleboy(19)
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siTh iuqontse aws no my MTCA nda I ulhadeg nhwe I saw .ti

gnsThi you geav ot kn:wo c^m3 = mL , enth how to vnrteco siut.n

2m^2c x 02 c/scem = ^3mc40 / esc = 04 mL / esc

romF rehe jstu vcenotr 40 mL / ces to L / inm

40 mL / ces x 1 L / 0001 mL x 60 sce / 1 mtunei = .42 L / mni

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 -1  upvote downvote
submitted by ∗kernicterusthefrog(139)
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uJst ni cesa taht oleyvl lietlt teqnouia edroipvd yb ap@ykenycmo nstw'a utqei uohgen ofr yuo, 'erhes a kiln to a oemr cpeomtel oiatlnexanp by Kahn ayA.dcem eepldH ,em henw I okeodl ta hte unoqaeti nad a,isd aaw?aha

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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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