Barron's CCRN Questions and
Answers Updated 2026
"highMdose"MdopamineMcausesMvasoconstrictionMand
M
(C)MIncreaseMafterloadM-MAnswerMWhatMisMtheMprimaryMhemodynamicMeffectMof:
DopamineM>10Mmcg/kg/min
(A)MIncreaseMpreload
(B)MDecreaseMpreload
(C)MIncreaseMafterload
(D)MDecreasedMafterload
(E)MIncreaseMcontractility
(D)MDecreaseMcontractility
PulmonaryMHTNMandMcorMpulmonale;M
Mitral,Maortic,MorMtricuspidMinsufficiencyM-MAnswerMWhatMcausesMtheMS3Msound?
duringMdiastoleM-MAnswerMWhenMareMcoronaryMarteriesMperfused?
S3MheartMsoundM-
MAnswerMWhatMmayMyouMhearMbeforeMcracklesMwhenMaMpatientMisMgoingMintoMheart
Mfailure?
VariantMorMPrinzmetal'sMAnginaM-MAnswerMWhatMisMthisMcalled?M
,UnstableManginaMwithMtransientMSTMsegmentMelevation
CanMoccurMatMrestMorMmayMbeMcyclicM(occurringMatMtheMsameMtimeMdaily)
troponinMnegative
CanMbeMprecipitatedMbyMnicotine,Mcoke,MorMETOH
RCA,MinferiorMLVM-
MAnswerMThereMareMchangesMinMleadsMII,MIII,MaVF....whatMtypeMofMMI?
LAD,ManteriorMLVM-MAnswerMThereMareMchangesMinMleadsMV1,MV3MV3,MV4
circumflex,MlateralMLVM-MAnswerMThereMareMchangesMinMleadsMV5,MV6,MI,MaVL
LowMlateralMLBM-MAnswerMThereMareMchangesMinMleadsMV5,MV6
highMlateralMLBM-MAnswerMThereMareMchangesMinMleadsMIMaVL
RCA,MposteriorMLVM-MAnswerMThereMareMchangesMinMleadsMV1MandMV2
RCA,MrightMventricularMinfarctM-MAnswerMThereMareMchangesMinMleadsMV3R,MV4R
MarkedMELEVATIONMofMtroponin/CK-
MB:MdueMtoMmiocardialMstunningMwhenMvesselMopens
reperfusionMarrhythmias:MVT,MVfib,MacceleratedMidioventricularMrhythmM(dueMtoMstunning)
resolutionMofMSTMsegmentMdeviations
, ChestMpainMreliefM-
MAnswerMWhatMareMsomeMsignsMofMreperfusionMfollowingMfibrinolyticMtreatmentMofMa
MSTEMI?
contactMtheMphysician.MCouldMbeMcoronaryMarteryMre-occlusion/stentMthrombosis.M-
MAnswerMYourMpatientMjustMhadMaMpercutaneousMcoronaryMinterventionM(PCI)M(stenting)
MlessMthanM24MhoursMago:
HeMisMexperiencingMunrelentingMchestMpain,MhisMEKGMshowsMSTMelevation.MWhatMshoul
dMyouMdo?MWhatMcouldMbeMhappening?
retroperitonealMbleedingMisMmostMlikely.MGiveMfluids/bloodM-
MAnswerMYourMpatientMjustMhadMaMpercutaneousMcoronaryMinterventionM(PCI)M(stenting)
MlessMthanM24MhoursMago:
HeMisMexperiencingMsuddenMlowMsevereMbackMpainMandMbecomesMhypotensive.MWhatMi
sMhappening?
>1M(getMbyMdividingMankleMpressureMbyMbrachialMpressureMonMtheMsameMside)M-
MAnswerMwhatMisMaMnormalMankle-brachialMindexM(ABI)?
doMnotMelevateMtheMaffectedMextremity,MitMwillMdecreaseMperfusion
PutMbedMinMreverseMtrendelenburgM-
MAnswerMYourMpatientMhasMPADMandMjustMhadMaMbypassMgraft.MHowMshouldMyouMca
reMforMtheMextremity?MHowMshouldMtheMHOBMbe?
torsadesM-MAnswerMprolongedMQTMcanMleadMtoMwhatMdeadlyMrhythm?
Amiodarone
Haldol
Quinidine
Answers Updated 2026
"highMdose"MdopamineMcausesMvasoconstrictionMand
M
(C)MIncreaseMafterloadM-MAnswerMWhatMisMtheMprimaryMhemodynamicMeffectMof:
DopamineM>10Mmcg/kg/min
(A)MIncreaseMpreload
(B)MDecreaseMpreload
(C)MIncreaseMafterload
(D)MDecreasedMafterload
(E)MIncreaseMcontractility
(D)MDecreaseMcontractility
PulmonaryMHTNMandMcorMpulmonale;M
Mitral,Maortic,MorMtricuspidMinsufficiencyM-MAnswerMWhatMcausesMtheMS3Msound?
duringMdiastoleM-MAnswerMWhenMareMcoronaryMarteriesMperfused?
S3MheartMsoundM-
MAnswerMWhatMmayMyouMhearMbeforeMcracklesMwhenMaMpatientMisMgoingMintoMheart
Mfailure?
VariantMorMPrinzmetal'sMAnginaM-MAnswerMWhatMisMthisMcalled?M
,UnstableManginaMwithMtransientMSTMsegmentMelevation
CanMoccurMatMrestMorMmayMbeMcyclicM(occurringMatMtheMsameMtimeMdaily)
troponinMnegative
CanMbeMprecipitatedMbyMnicotine,Mcoke,MorMETOH
RCA,MinferiorMLVM-
MAnswerMThereMareMchangesMinMleadsMII,MIII,MaVF....whatMtypeMofMMI?
LAD,ManteriorMLVM-MAnswerMThereMareMchangesMinMleadsMV1,MV3MV3,MV4
circumflex,MlateralMLVM-MAnswerMThereMareMchangesMinMleadsMV5,MV6,MI,MaVL
LowMlateralMLBM-MAnswerMThereMareMchangesMinMleadsMV5,MV6
highMlateralMLBM-MAnswerMThereMareMchangesMinMleadsMIMaVL
RCA,MposteriorMLVM-MAnswerMThereMareMchangesMinMleadsMV1MandMV2
RCA,MrightMventricularMinfarctM-MAnswerMThereMareMchangesMinMleadsMV3R,MV4R
MarkedMELEVATIONMofMtroponin/CK-
MB:MdueMtoMmiocardialMstunningMwhenMvesselMopens
reperfusionMarrhythmias:MVT,MVfib,MacceleratedMidioventricularMrhythmM(dueMtoMstunning)
resolutionMofMSTMsegmentMdeviations
, ChestMpainMreliefM-
MAnswerMWhatMareMsomeMsignsMofMreperfusionMfollowingMfibrinolyticMtreatmentMofMa
MSTEMI?
contactMtheMphysician.MCouldMbeMcoronaryMarteryMre-occlusion/stentMthrombosis.M-
MAnswerMYourMpatientMjustMhadMaMpercutaneousMcoronaryMinterventionM(PCI)M(stenting)
MlessMthanM24MhoursMago:
HeMisMexperiencingMunrelentingMchestMpain,MhisMEKGMshowsMSTMelevation.MWhatMshoul
dMyouMdo?MWhatMcouldMbeMhappening?
retroperitonealMbleedingMisMmostMlikely.MGiveMfluids/bloodM-
MAnswerMYourMpatientMjustMhadMaMpercutaneousMcoronaryMinterventionM(PCI)M(stenting)
MlessMthanM24MhoursMago:
HeMisMexperiencingMsuddenMlowMsevereMbackMpainMandMbecomesMhypotensive.MWhatMi
sMhappening?
>1M(getMbyMdividingMankleMpressureMbyMbrachialMpressureMonMtheMsameMside)M-
MAnswerMwhatMisMaMnormalMankle-brachialMindexM(ABI)?
doMnotMelevateMtheMaffectedMextremity,MitMwillMdecreaseMperfusion
PutMbedMinMreverseMtrendelenburgM-
MAnswerMYourMpatientMhasMPADMandMjustMhadMaMbypassMgraft.MHowMshouldMyouMca
reMforMtheMextremity?MHowMshouldMtheMHOBMbe?
torsadesM-MAnswerMprolongedMQTMcanMleadMtoMwhatMdeadlyMrhythm?
Amiodarone
Haldol
Quinidine
