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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 tRae = iloeVytc x rSeCcnsosli-toa Area

2 ^c2m x 02 smcc/e x 60 mi/senc x 1 /100,L0 cm^3 = 2.4 Lm/in

0100, ^3cm = 1 L

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seagull  Wll,e I ismsde tsih n.oe I nodt' vnee elfe bad. +78
link981  kce@mynaoyp a laslm ,ytpo 100 m3^c = 1 L nto c^00m13.0 01 00 =Lm3^ 1 L +1
hello  @ycynkoamep who ddi ouy tdie ryou ailgoinr ntemocm to fix yuor ?ytop +1
winelover777  rPetyt srue empayk@oync aws erotrcc. 1 L = 1000 .c^m3 estOehriw the neaswr dolwu be .24 +4
drdoom  1 ceneimetrt is a scneia.dt A( n.)lei +1
drdoom  fI ew ymltiplu a lien by tornhae ei,nl we tge a uafcsre a.are (A cieep of ap)e.pr +1
drdoom  If we tllupmiy teh eipce fo pepar by anrohte line, ew teg lumv.eo A( euc.b A o)bx. +1
drdoom  If ew fill eth xbo twih a udifl, ew llwi haev 1 Lm of ihts ufidl. +1
drdoom  If we vahe a hdontusa of htsee bes,xo ew ehva 1 L fo ld.ifu +1
drdoom  1ooo, mL = 1 eLrit = 1ooo, nrte³etiemc +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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e'vI ernev neeb doog ta civnortgne nutsi :( oll os dha to kas my orrtebh. He oldt em h:tta

tcidaesn × nitsdaec = nsedtcai2 = raea

na,d

iesndatc × icdatens × aenistdc = encasdit2 × neadstci = ctasdnei3 = evmoul

ttaoG lvoe cpluib cohols orf nerve nbee tugaht atht ... esegh syoi(vlbuo 'evI neod hte uqitosean nda fsu,ft tujs nrvee neeb odtl ti ttah wta/tayh plmies eoer)b.f giKnnow htat emkas ugignfir uto teh eatiunqo uhmc :isreae

olFw reat = ovlceyti × ACS = 02 mcs/ce × 2cm2 = 4cm03/sec

oT enrovct to ,miL/n jstu ipulym:lt

40mc3/sce × 06 mec/isn × m,0/1c00L13 = 2040 /,010L0 mni = 24. /mniL

eHpo tsih hpe!edl

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impostersyndromel1000  ot all ym iulcbp olhosc peesp tuo there n(da ton het ncei bpclui hssolco ni hcri er,asa eth rael ucbpli .ocos).s.hl ew edma ti! +4
angelaq11  nhfuTklaly I asw auttgh ohw to ontevcr tns,ui tub tel me tell ouy atht I swa SO tols on tish o.en s'tI USESLSE to know owh to od it if oyu I(, I eanm I) 'todn nowk teh mdna urfolam .xD yiOblsuvo tgo thsi eon o,gwnr but i'ts oogd ot nwko tath fi it vere socme pu ianag da(n I owkn ti )'tnow I yldaaer nkow it. +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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h,gU yro,sr netgtig used to eht mn,traiofgt and dcenctilayla ptedso it in eth wgnor e.pcal

Awnysay, to ere,tiaetr I yawals tjsu olko at het units. tI anwts n,Li/m Im' neigv mc2^ adn cme/cs

oS I y,limltup ot egt muleov uot fo it 3^,c()m hnet enorctv ecodssn to isuetm.n

Tush, ist' bylacisla ,22xx6 ni mose haesp ro ormf trfae lnacipg het eladcsmi paleoiparp.tyr dGoo higtn tyeh nd'tdi dad tath ptalraicur erl,inwk llI' atke my irleamed tham islskl nda gbu ,uot ah.a.h.

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 +1  upvote downvote
submitted by googaga(2)
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gienTst sietntg .132 sThi si a tste ptos ot see fi hgitns un smrac ebl by tygpni a emnocm.t a.shTkn

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drdoom  i sercept htsi tamtpet tbu i odtn' tkinh it ksorw hatt ywa +2


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 +0  upvote downvote
submitted by ∗usmleboy(19)
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hTis nqiouste asw no ym MCTA dan I lghduea hewn I was it.

snhigT yuo agev to nwo:k cm^3 = mL , neth hwo to cervton nu.sti

2m2^c x 02 semc/c = 3c04m^ / sec = 40 mL / cse

rmFo ereh stju nvreotc 04 Lm / ces ot L / imn

40 Lm / sec x 1 L / 1000 mL x 06 esc / 1 nmitue = 42. L / imn

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 -1  upvote downvote
submitted by ∗kernicterusthefrog(139)
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Juts in ecas taht loeyvl eltlit tueiaonq dreopdvi by aycnp@omyek s'nwta ieqtu ohegun orf ,oyu ehesr' a lkin to a moer octeempl inapnexatol by haKn y.mdaceA depelH ,em ehwn I oloekd ta teh neiqouat dna isda, aaahwa?

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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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