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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 Reta = toyVleic x asonrCleci-Sots arAe

2 2c^m x 02 mccse/ x 06 /eimsnc x 1 0,10/L0 m3^c = 4.2 i/Lnm

0,001 c3^m = 1 L

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seagull  Wl,el I diemss hist .oen I to'dn vene efle .dba +78
link981  ckeyyn@apom a mlsla yot,p 100 mc3^ = 1 L nto c^1m000.3 01 00 =Lm^3 1 L +1
hello  yeankpo@ycm who ddi oyu itde yoru irgnlaoi mtocmen to ifx uyor oyt?p +1
winelover777  retyPt urse ayemop@kync aws rco.tcre 1 L = 0100 c3m^. erOshitwe hte awersn oudlw eb 4.2 +4
drdoom  1 rnmeietect is a eticasd.n (A .iel)n +1
drdoom  fI we itulypml a lein yb enthrao ,leni ew gte a acfseur .arae A( eceip fo p)arp.e +1
drdoom  fI ew ilulptym hte cpiee fo aprep by othrnea ine,l we egt u.emvlo A( b.ceu A )o.bx +1
drdoom  fI ew llfi eth xob wiht a ,fldiu ew wlil eavh 1 mL of sthi f.uldi +1
drdoom  fI ew have a dohtnaus of teshe ,xebso ew ehav 1 L fo ufidl. +1
drdoom  ,o1oo mL = 1 iteLr = ,1ooo ctmreeietn³ +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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I'ev enrev bene godo ta tevcrgionn stnui :( llo so dha to aks my b.htorre He tldo me ah:tt

tceanisd × ientsdca = deistcan2 = eaar

dna,

acdnseti × tcisdena × dcetnsai = sdcaitne2 × snaecitd = tecadisn3 = vloume

atGto levo upcibl solhoc ofr ernev been tuhgat taht ... seheg yvs(oiuobl vI'e noed the toesiuaqn and us,ftf usjt rvene eenb lotd ti ahtt thty/aaw lsipme )frbee.o nongKiw atth kmase guirignf tuo teh eqitouna hucm i:serea

olFw eart = ievcyotl × SAC = 20 /cmsec × m2c2 = m0c43/sce

To encrtov to m/,nLi jsut lmpyiut:l

40mc3/esc × 06 niec/sm × 01/m00,1Lc3 = 2400 L01/00, min = .24 i/nLm

opeH shti le!hpde

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impostersyndromel1000  ot all ym lpibuc slcoho pseep tou hteer nd(a otn eth iecn ubcpil lsosoch in rhic aea,sr hte alre ubclip )cs..oh.slo we mead !it +4
angelaq11  ukfTlhalyn I wsa ttugah who to oecrtnv stuin, tbu etl em eltl oyu thta I asw SO olts no isth noe. tIs' SUSLEES to oknw hwo to od it if uoy (,I I aemn )I nodt' wnok hte nmad aluofrm D.x liobyusOv tgo stih eno wgn,ro ubt tsi' dgoo ot knwo that if it eevr meocs up inaag d(an I know ti )'ownt I ydaeral kwon .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)


 +2  upvote downvote
submitted by seracen(15)
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g,Uh ,rsoyr netggti dues ot teh t,tnoiramfg adn taicecnladyl deptos it ni eht nwgor plec.a

nyywaAs, ot a,tterreie I wlasya tujs olko ta the ntu.is tI nsatw L,nm/i 'mI enigv ^c2m nda /ccems

So I ,ylmliupt ot gte veumol tou fo it 3^m(c,) tenh ocvtren noesdcs ot ins.mute

hsTu, i'st byalacsli ,6x22x ni some seahp ro rmof farte pilcnga eth eldicams pporatlare.iyp oodG hgnti tyeh tnidd' dad hatt atlrcuiapr k,wenlri Ill' teak ym lieemrda hamt skllis and gbu o,tu .h.haa.

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 +1  upvote downvote
submitted by googaga(2)
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tignTse stnietg 312. siTh is a stet ospt to ees if stgihn nu mcsra elb by tngypi a .neotmcm Tsnha.k

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drdoom  i strceep sthi tmpatet tub i ton'd tinkh ti sowrk thta awy +2



 +0  upvote downvote
submitted by ∗usmleboy(19)
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ishT oqtieuns was no ym AMCT nad I dlghaue hwne I saw .it

Thsign yuo avge to kon:w 3^mc = mL , tneh woh to vtoercn u.tnsi

^cm22 x 20 mcc/es = ^m30c4 / sce = 40 Lm / esc

Frmo rhee utsj rcnvoet 40 mL / sce to L / imn

04 Lm / sec x 1 L / 1000 Lm x 06 esc / 1 muinet = .42 L / nmi

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 -1  upvote downvote
submitted by ∗kernicterusthefrog(139)
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sJut ni scea htat voelyl eltitl neuqaito rdoipedv yb @opamkneycy 'wstan etuqi uengoh ofr ,yuo seeh'r a lnki to a meor pcoteelm xpnloeiaant yb hKna .cymadeA pHdele ,me ewhn I olokde at het nuotaqei dan di,sa aawha?a

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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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