NBME 23 FEV1/FVC: normal;<br />FVC: decreased;<br />Diffusing capacity of the lung for carbon monoxide: decreased (NBME Answers)

Retired NBME 23 Answers

nbme23/Block 2/Question#21 (reveal difficulty score)
A 55-year-old man comes to the physician ...
FEV1/FVC: normal;
FVC: decreased;
Diffusing capacity of the lung for carbon monoxide: decreased 🔍 / 📺 / 🌳 / 📖
tags:

+6 upvote downvote
submitted by momof21234(6)

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hte npeatit has botsaess chiwh si ievcrirttse cu(le asw rlpueal a)lq pseLDuCO si arddeeesc in htcrtrianc-aio sinotcindo (tirttinialse nugl zd etc) dan lonarm no oehtraat-cxirc tnodiscoin (asrmcuul eiuss)s

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usmlecharserssss ohw /VF1ECFV si nmroal i nocnat teg taht +4

sammyj98 I tkihn sith si tsaarndd rof recevirstit ugln d.saeeiss nI rstvoibuect hte rawayis leacplso urdgin atiineroxp os it's rahd to pirxee, utb r'teesh a lngo anrwd otu den ot oapiterni as tlliet by leltti it c,espsae gnleadi ot a eedasdrec CEF/VVF.1 In rectisivrte st'p utsj eanr't able ot move dna pdenax rhtie lsgun eo,ghun os wnhe hety rxiepe is't of a lmlsa eml,ouv tbu treeh tsi'n nay seclopla novlvei.d t'Is kiel a romnla ieiontaprx jtsu whti a etcserdtir umleo,v ankmgi teh /F1CFVVE aorl.mn +

spow lr@ssemerhsssasuc nI tiscertvire ungl seiead,ss teh oatir si reethi lamnro or ne.deicsar +4

drzed dnA the osaren why FECF1/VV si hieetr mnraol ro csaineedr ni vttsrieirec nlug aesised is yrev eismlp: hte V1EF nad CFV thob cseearde ecabsue uyo rae grcniriestt wr,ifloa but het CVF wlli aedseecr OMER ntha the E1VF, dan suth eaucsbe eht omeraidtnno is reagrl, eth fniarcot irehte yasst rmao,nl ro iecerssna ohnralltssyt iCtg ihst to otcibetsrvu lngu sesdeai erhew uoy veah an sriocnotubt ot rai LFOW, .g.e het 1FEV lwli ecderase orme hant hte VC,F dainelg ot a lwo aitor yb otifnide +7

llamastep1 oT dda ot hawt erd@dz isa,d rsiiobsf ecssua adaril tacoirnt no eht syiarwa oeeertrfh iacnsnireg FC/V1.EFV ehsrTe a ldwroU q no it +1

ankigravity nAd tjus to dda ot htwa @ptlalmaes1 adi,s aialrd ittncroa si eth iertvael efcro dtreeex no teh siaywra yb hte intitseitral esssui.t It is esenrcadi in fctriiob cintoonsdi eud to egntnsi fo het eutssi nad earcsedde ni icoinosdtn ttah dseorty ro eruecd tegtsrnh fo trniitsetail uses.it +

FEV1/FVC is normal because even though FVC decreases, FEV1 also decreases proportionately. There for the FEV1/FVC would be normal if both values decrease.

+2/- mdmikek89(6)

+1 upvote downvote
submitted by ∗imgdoc(183)

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03 ysaer scorctoutnni eok,wrr niantlsou,i nibdips,gihul pimubl?gn ssbisn stoAiefe srrypiioatn scelkacr = ertvrciesti lgun iielae bdlsraaset cpalmhnreay aii,ptocse TLIRUCERA etptnra = lapnoyurm rofisisb ntperat on CULXR LREAP USPQAEL = yhrreC on o,pt trexa ifno, Aeisboss.st

All of hist opsint ot a tecvsiirtre lngu aeseids twhi na ITTALTNEISRI tprt.ena venE fi uoy idtdn' tge astseb,oiss tub oodusndetr htat sthi iocoglathp pcsesro is crseivtreti in aren,ut uoy can egt het hrigt tse fo ngaeshc no FT.P Tish is a lgoatphcio itilntiestar d,eeasis ton istneamyha asivgr ro ooi,lp so DCOL iwll eraee.cds FI isht wsa hnaeytimas ,rsavgi nad ti aeskd ofr eht smea ste of sinindfg uryo CLDO WLUDO BE NALO,RM uyro veAloalr raeilrat denartgi ldwou be alr!mno!

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+0 upvote downvote
submitted by docred123(9)

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Aer all triiitrcnete/virttleaiss lgnu sasseedi dcaniiitve fo a WOL C?DLO

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nlkrueger loyn fi ist' an liteaiintrst lgnu eiasdse i belivee. kile poiol acn cuesa a tetrvciseir" lgnu ase"sdei btu it's due ot meucsl rtffeo dna odwlu pexect to ese a edceesra ni ifinugdfs pcayitac (AF 8102 pg 725.)6 +6

meningitis onicnrtostuC k,rorew sfDfuei trirleacu stoiiacpe seamecdr setcveritri dna wol ODCL orf em. Agiynthn atth hreeti adsd sisrbfoi ot eavioll, or nciethks the aidtreem etebnwe ilealvo adn aoralevl rslceialpia wlli cseau owl OLC.D +10

305charlie94 lyuctlAa lopio is eno fo hte teivicerrts ugnl sdiassee ttha veha a lmraon dungfiifs ctapiacy rfo rnbaoc nxidomeo FA( 0192 p6)1.6 +1

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