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NBME 23 Answers

nbme23/Block 2/Question#7 (reveal difficulty score)
A 45-year-old man is brought to the emergency ...
Hypovolemic shock 🔍 / 📺 / 🌳 / 📖
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 +4  upvote downvote
submitted by sympathetikey(1600)
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dMa ta slmefy fro ggnanhci ym wn.raes

atuyFl lgoic daem em reownd fi gitntih ruyo deha louwd caudes ascenider CPI o,s keli a hgisnuc eul,rc oyu duowl gte eseicnrad gaVsu nveer viytitca dan ybmae iayrabddacr + syne.noohitp But I ugsse hte RSAA meytss douwl ahev acetnuetordc ttah and edcsau sisncocnrtiaotvo vero 42 uhso,r os mvioHpycole shcko si efiyndltei teh bste echc.oi

wyasAl hdoslu og with hte ibvsoou wnreas :)

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seagull  I dah eth iaed ttah tihs saw a ioreeucgnn cksho adn snincgarie litraarinacn pssrreue odcul faetfc eht gausv .oot I hntik eth etoqnusi learyl wnats su to og htta d.reontcii +17
uslme123  eTh ingChsu flxere saled ot yadrcb!aardi +7
purdude  itWa Im' cdeos.fun I outthgh ohcpmvieyol ksoch saedl to an nedaceirs S?RV +2
littletreetrunk  rpeypla,nta 'rethes a thgni leladc htaismtceyp cseaep hatt can peaphn trfae a wileh .ei.( e'sh neeb uot fro 42 r:)ohus lmioAcnctuua of sesuti tlmceoiab droastoivla bsnuaestcs samiirp d-apamheytdetmtseiic arovtntoic,inossc ihcwh dsale ot sosl of rsuvcala e,ont rirevegpsos ehpynooitns nda ronga ohpyeuri.posnf +1
littletreetrunk  olsa osla if eh iht sih hdae eh ludco ehav ossl of ttcyiahpesm twluoof rfmo a yixohcp edlumla hiwhc dcuol edal ot dn,iitvoaaols cwihh hfrruet euescrd irtarela ,rsesperu tub hist was a hard noe rof em lol. I olsa tpu ecnedsria PIC ah.w +1
catch-22  ynA lack of themaiypsct /inofrluecsteodwa aglva foutwlo dsouhl ecdreu RH, ton anecisre .it Fr,utrhe uyo uwldo xpeetc amebntsri isgsn fi eehrt asw ixyphoa ot the msnti.earb oFr eapmlx,e fi uyo dah agdema to hte laiytors ncue,uls oyu on'uwtld eb elba to eltgruae ryuo HR ni oesseprn ot eurecdd P.B niSce hits ptnetai sah ercddeu PB nad eidnaresc H,R hist cnediasit hatt het apmyirr anertdicbsu is elkyil hte deuercd .H 'PBes laos nbee ni a detrse ofr 24+ rusoh .so +5
charcot_bouchard  nI a npateit how esoedpvl spoynohteni fowgolnli -rhnigeyhge raum,at gocenunier chkos si a iodgsisan of uslixoecn ttha is meda eftra hovoempycil dan vcutobtesri cigcaeirdon hoskc hvae bene eldru lP suuto! Abenst rayaddiBrac elurs ti tuo +2

Increased ICP would present with the cushing reflex (hypertension, bradycardia, irregular respirations). This occurs because during increased ICP, the brain will compress cerebral arteries causing reduced cerebral perfusion. As we all know, cerebral perfusion pressure = MAP - ICP, and thus the body will force a pressor reflex to raise the MAP to try to keep the brain perfused.

Unfortunately, this causes reflexive bradycardia due to the baroceptor reflex activating. The irregular respirations are because the brainstem is compressed.

Since our patient does NOT have the classic cushing triad, you can rule out increased ICP.

+17/- drzed(332)


 +4  upvote downvote
submitted by yex(128)
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mmm.H Wlel ym mnid sah bwnol fof eabusec awth iht ym dmin wsa ddryhiaoent icens he asw in the tre.sed As oons as ym imdn attdsre ot enrdaw tbuao lla of eth ehrot iptnoos ahtt oludc meka ense.s.. I jtus clceikd dna ovdme!

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charcot_bouchard  taSmr boi +5
usmlecharserssss  ignkih ni asahar tredse SHM +4
cbreland  lpiSem = msatr +



 +2  upvote downvote
submitted by diabetes(31)
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ielgbedn + seurrpse donw ups+el pu aelqu yoliophvcme cksoh

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 +0  upvote downvote
submitted by nwinkelmann(366)
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I dfoun hist abuto adesri C:IP ri"anesPtneto fo diares cnriiantlara euperssr = aadheeh,c depl,ilaempa enuaigoan,tsvi/m wsero in teh gnrinmo sa PIC sersia ngduri eht tignh as a neonuecsqec of ,nbroyecemc a eisr ni OP2C dnirgu peles cdseua by iyrpeoarstr deier,snsop dna obbrylap a asreceed in FCS ,bsrpoinato lpaiyrlup dnlaio,ti sp,tosi ediirmap ,azge rpiertaryso ela,tigruriry ,SAM dan ecsanhg ni BP, RH, dan oestyaprirr epantrt rae sluuyla ltea nssig fo rsdiea ICP nda rteedal to nrtabimse siiortndto ro ea.iicsm"h

:/ct/msppnctpoju3o3ji/s/l2tn/bnep_.t7m./hn1

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 -1  upvote downvote
submitted by hello(429)
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t'haWs teh mhsceesyo opdsespu ot be a lecu abo?ut Deso hits etiantp ahve CDI? eDso IDC wsalay cause cvoieypmhol shc?ko

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drdoom  maietdnsiDes caiuvanrltsra gliacoaotnu (D)CI is a dncisryom eoftndniii. (eeS .gtean)tn tI osed nto saaw“ly” dlea ot khosc btu khocs is iyefetnldi a lissobpe ealeuqs s,cin(e by ndeifino,it ICD = cys“metsi itbmcthoro ;orsse”pc ntaginyh ysicsetm oduslh gte ouy a litlte rw,edrio) nad so a panteti iwht ICD lsohud be oroidntme c!lyleos +
yesa  I ktihn eyht add ot the hoimapylveo uitrp;ec he is derhyetdad DAN geielbnd noit ihs siusest eeuscab fo unstcoisno -t;g&- eddeaecrs catusnavrialr .vo..m.eul +

From https://meshb.nlm.nih.gov/record/ui?ui=D004211:

Disseminated intravascular coagulation. A disorder characterized by procoagulant substances entering the general circulation causing a systemic thrombotic process. The activation of the clotting mechanism may arise from any of a number of disorders. A majority of the patients manifest skin lesions, sometimes leading to PURPURA FULMINANS.

+/- drdoom(1206)


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