NBME 23 Closure of the mitral valve (NBME Answers)

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Retired NBME 23 Answers

nbme23/Block 4/Question#14 (reveal difficulty score)
A 61-year-old woman comes to the physician ...
Closure of the mitral valve 🔍 / 📺 / 🌳 / 📖
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+14 upvote downvote
submitted by ∗lfsuarez(160)

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rtisF rehta nudos )S(1 is erngeteda by wot taehr saevl:v the trlmia lvvae nad dpiirtcsu al.vev elyraN uoamisstleun cgsolni of ehtes slveav mlraylon esnaeetgr a lneisg 1S ndsou. iStplgnit of het S1 usond si eradh hwen irmtal adn diupirstc avsvle escol at sylhltig eidntffre imst,e wthi syullau het ltmari ilcgons bofeer diuctsrpi

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yotsubato Tenh wyh eth ukfc si it gdbcriinse a lamtir veval duosn in hte crtduiisp raae +29

dr.xx sit' egidscnbri a glitptisn S1 — instngciso fo limrta dan dprsiitcu evval urolsec — hatt is bste dehra at hte rtuipdcsi ef(lt elrwo elstnra dr)robe adn mialrt ardacci( paxe) ltniiensg .posst +40

titanesxvi rkiytc oeu,qsitn I toghuh ahtw nsudo it is in eht tefl elranst brredo, so I cehso suticdirp ,aevvl but ahwt tyeh rhewe iangsk w,sa twah is teh tsirf onoptnmec of het S1 osnud +5

titanesxvi rtycki s,queiont I guthoh thwa usond ti is in teh felt ealsnrt ,ordreb so I echso prdsuciti avv,el tbu awth they wheer iakngs wa,s atwh si teh rtisf comontenp fo teh S1 udson +1

drzed It tudhs'lon aemrtt wreeh yuo ahre a tlisp udsno. Fro ,epxalem on ermtat rheew uoy ealascuttu no eth ,eraht het condes tehar dousn in a lyhtaeh diauniildv lwli aysalw eb 2A etnh P2 (wrtehhe uyo aer at the tmiarl glninseit tsop ro the ioract iisntlneg Teh)t spo kye is gznicigonre atht het htigr didse salevv ni ethhaly ddnisvaiiul will lyaaws cosel erlat (.ge. teh aehrt dnuoss ear 1S ,S2 btu remo siacpyecfill M1 1T 2A P.)2 heT oresna rof ihts is mseilp: fi uoy ekat a bareth ni, you wlil iacernes eprolad on teh tigrh side fo hte ,ehart nda hust eth gretera vomleu lliw eascu a yedadle coeslru fo eht elv.va hTis is hsipiolocyg sinlgt,pti adn is etbert cpertpaadie ni eht nmpraoyul dna ctaior sevavl esbeacu yhte ear nudre gereatr usrerpes, dan htsu eodr,lu but it can slao be dhare ni eth irfst ahret sn.dou +16

alexxxx30 sye redeag!! hsiT uniqteso si tloyms aknsig fi uyo endunatdrs a wfe cbsia gniths ginaergrd doarci iys.hpo ehT lfet desi fo hte haert si teh rheghi surpsree esid so tfle iddes avlesv wlli lcsoe i.stfr The higrt eids fo the retah si eht lowre resrusep d,ies ciwhh eamns rihgt sedid vlvase liwl oepn .rtfis Lfte[ slosce sftir, Rtghi esnop t.dsify]lcro.S.,en ti ruisreqe uoy ot wnok awht 1S and 2S unsosd ecmo of.rm 1S is the suicirlptamd/irt lveav inclgos nad S2 is het rrypn/mlucaoioAt vesalv lnigsco. So aelyrl eht iuoesnqt kssa ahwt si het fisrt nncpmooet of S1 mtlri(a ro srtipiucd scelos .)fitsr dnA nesci ew nwko atth eth ftel side wlil aalwsy olsec itrs,f ti umts eb aimlrt elvav crel.uos orSyr fi atth was a olgn laieontn.xpa +16

jesusisking Tshakn lxxe@,x3a0x ouy hte !nma PIR Kboe +

yesa zdder@ lsuesn sit' lpcoadxiaar psignlitt Ex] itacor s,tosenis hent ti si corait aelvv nigclso srfit ta .2S +

This video explains it https://www.youtube.com/watch?v=kvQ2IU3ILRo&list=PL3n8cHP87ijDnqI8_5WQlS4tN37D6P4dH&index=8&t=52s

+/- uasid(68)

I think by 'left sternal border' they're referring to the Erb's point - left 3rd ICS on sternal border.

Even I got it wrnong thinking tricuspid area is being described!

+/- abhishek021196(120)

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+4 upvote downvote
submitted by ∗gh889(154)

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teGra ivdeo on S1 nda its' l!tp!si

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+3 upvote downvote
submitted by ∗rolubui(17)

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ehT ywa I eerembmr it, S1: Mlriat p&ma; tiispdrcu bc oblod oegs mofr arati to tnerecvlis nthe fmro nrieltevcs to dsoteiu eth ahrte &--g;t .2S woN, hewn uyo ehav a plitS S1 teh yaw I thkin oubta si htat nhwe oyu iaheln ouy vhea retax lbdoo ngimoc oint eht igrht desi fo het eatrh so the dusritcip avvesl ecssol ertla dan eussac a pstli S1 unop irstianpeor. epoH tath .epslh

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+1 upvote downvote
submitted by ∗yogi(19)

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Q: Stlpi 1S adehr eorv etfL letnrsa orbred - usircpdit .raea riFst oenmtponc of SA1? : nyaithng (CM ni R)BBB thta cssuea addleey cesulro of spircudti avlev oprmecda ot ariltm vla-ve lliw casue siptl S1 whti dleeayd 1T dna yearl M1 hraed at ipurcsdiT a.aer

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+1 upvote downvote
submitted by usmlehulk(7)

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lPesea rdea the atls stenecen fo hte u.qotnsie I knthi eth ltpsi tgimh eb auecseb fo b,Rb. siht eusasc teh mrtali dan sciurdtip evavl ot celos ta rdffeient tsie.m

s-o chhwi fo the owilnofgl btes xpieansl the rsitf ocmtnepno fo teh hrate snoud (ltpis .)S1 u Shdlo be het arltim vealv elosucr bfereo het ducsirpti .avlev

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