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

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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:

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submitted by momof21234(6)

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hte ietptna hsa etsbosas hhwic si rvireietcts uec(l wsa elaprlu psOeuaCLl q)D is eecdresda ni -acahtiictorrn isditocnon tietlrtni(ias ungl zd te)c and olmrna on -ahteitaoxcrcr sdcoitonin (urlamucs se)sius

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usmlecharserssss owh 1EFVCF/V is oalnmr i naontc teg atth +4

sammyj98 I tiknh tshi is daatsrdn fro ritciveerts lnug asds.iees In teocuvristb teh sawyria aplsolec inrdgu iaiptnxroe os 'its rdha ot xre,pei ubt rhete's a nlog narwd tou dne to inoateirp as elittl by ettill it cpsees,a dealgin ot a deaeecrds FC1VVFE/. nI tirsecrveit 'tps tusj taern' lbea ot vmeo nda dnxpea trihe ulsng ue,oghn os hwen ehty eriexp 'its fo a lalms vml,oue ubt hrtee itns' nya llsopaec ei.volvdn 'sIt ilek a onraml arniixpeto jsut hitw a tedesrcirt eou,vlm inamkg teh EFV/VFC1 rlo.nma +

spow shsesl@uresscrsma In etrsctvriie lgnu disea,ess hte raoti is ertihe anmrol ro rsiaeed.nc +4

drzed dAn eth sraeno ywh 1VE/VCFF is ethire onlmar ro rsadieecn ni ticrtisreve lnug issaede is revy s:ilemp hte VFE1 dan FCV hotb esareced bsaeeuc oyu era tncristregi owrlai,f tbu the VFC lilw csaedree OMER ntah the ,1VFE and suht uaesecb the eoadmonirtn si rgarle, eht natofrci threie stsya ar,nlmo or sreneasic riyotCln lthsagst shti ot tibvturcsoe guln issdeea eewrh oyu heav an cnsoobtruti ot ari L,FOW .eg. teh EFV1 liwl aeeedcsr orem ahtn the CFV, dnilaeg ot a low ratoi by oiiftnde +7

llamastep1 To dda ot tahw derzd@ ad,si rsiosbfi eussac aaldri tncroita on teh yraiwas rfehoeert rcnineasgi /CFEFV1V. heerTs a lUodwr q no ti +1

ankigravity nAd sjut ot dad to wath ale1ptmla@s a,sid idrala cttorain is hte eriavtel orecf reeedxt no teh ryswiaa yb eth rititsetalin .stsuesi It is reeadnsic in iicrfotb tnsncdioio ude ot egnsint of eht etiuss dan ceesderad in cdinnsooit ttha yotedsr ro uceerd tgentrhs fo ilnrtsiiatte ei.utss +

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)

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submitted by ∗imgdoc(183)

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30 saery ictorocntusn rkwore, soiulain,nt ugdbpilih,nis gniml?bpu Asoisbnetsi sef tsoyiraipnr ksareccl = rvictesietr glnu ebdia aarstlelesi hlymcnaraep paecs,oiit ELIARRCTU apentrt = nymrpolua irifbsso rtatnep no RLU RLXAPEC UEALPSQ = ryChre on ,pto xtear n,ofi Aesiobss.ts

llA fo itsh istpno to a ercttsireiv gnlu eaissed hwti na ANLTERIIITTS naetp.rt vEen if yuo intdd' teg bsatsi,sose btu ouesndrdto atht thsi itaogcplho reosscp is vcreitsrtie in tenr,ua oyu anc egt het hrgit ets fo geacnhs on T.PF Tish si a lgcopathoi tainritetsil ses,diae nto iehmayanst rsivga or o,oilp os DOLC wlli c.eaesder IF ihts saw mayitnesha givs,ra dna ti dsaek ofr teh seam tes of iisfngnd oyur CDOL LWUOD EB OMRL,NA uoyr Aolveral rteiraal edtnraig woldu eb r!an!oml

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+0 upvote downvote
submitted by docred123(9)

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erA all irtltetreiii/inetctrasvs gnlu sessiead itveiiandc fo a OWL CL?OD

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nlkrueger oynl fi 'ist an iriatelittsn ungl iaedses i vleb.eie lkei piool can secua a i"trirvtesce guln dseseai" but sti' eud to scueml rfteof and uldwo ecptex ot ees a ceeesrda in gifndisuf atyapcic (AF 0182 gp 6527.) +6

meningitis rnutnosiCcto o,wrerk fsieuDf lcraiurte psoicieat acsemdre rerctiivtse nad wol OCDL ofr .em tyngnhiA atth ethire ddsa bsofsiri ot ialoe,lv ro hctnikes eth armeitde btenwee ivaolle dan ellaovra eraiialpslc lwil ecasu owl O.DCL +10

305charlie94 cylluAta oiolp is one fo eht sittercrevi ungl idesseas taht eavh a oanrml gdiifsfnu atcaiypc rof onrcab xoiodnem FA( 9021 )66.1p +1

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