AACN PCCN Review: Dysrhythmias
Questions and Answers
ImpulseMConductionMPathwayM-MAnswerMSAMNodeM--
>MInternodalMpathwaysM(AtrialMContraction)M-->MAVMNodeM(Delay)M-->MHis-
PurkinjeMSystemM(VentricularMContraction)
DysrhythmiasMCommonMCausesM-MAnswerMDecreasedMCoronaryMPerfusion
MyocardialMhypoxia
ElectrolyteMdisturbances
CardiacMMuscleMInjury
IschemiaMorMinfarction
DefectsMinMheartMmuscleMorMelectricalMsystem
CardiacMSurgery
ElectricalMStimulationMtoMtheMheartMmuscle
Medication
BestMleadsMtoMlookMatMforMAfib/AflutterM-MAnswerMII,MIII,MAVF
BestMLeadsMtoMAssessMJunctionalMRhythmsM-MAnswerMLeadMII
BestMLeadMtoMdetermineMBundleMCranchMBlocksM-MAnswerMV1MandMorMV6
STMSegmentMMonitoringMforMRCAM-MAnswerMIIIMorMaVF
STMSegmentMMonitoringMforMLAD/CircumflexM-MAnswerMV3
STMSegmentMMonitoringMforMActivityMInducedMIschemiaM-MAnswerMV5
STMSegmentMMonitoringMforMunknownMproblemM-MAnswerMIIIMorMV3
ECGMZonesMofMMIM-MAnswerM
, InferiorMWallMLeadsM-MAnswerMII,MIII,MAVF
"INF"
AnteriorMWallM-MAnswerMV1-V4
LateralMWallM-MAnswerMV5,MV6,MI,MaVL
BestMTMwaveM-MAnswerMV3,MV4,MII
ReciprocalMLeadMChangesM-MAnswerM
ReciprocalMLeadsMforMInferior:MII,MIII,MAVFM-MAnswerMI,MaVL
ReciprocalMleadsMforMHighMLateral:MIMaVLM-MAnswerMII,MIII,MaVF
ReciprocalMleadsMforMAnterior:MV1,MV2,MV3,MV4M-MAnswerMNONE
PosteriorMleadsM-MAnswerMNONEM-MyouMmayMseeMreciprocalMchangesMinMleadsMV1-V4
DefibrillationMorMCardioversionMDefinitionM-
MAnswerMPassingMofMelectricalMcurrentMthroughMcardiacMmuscleMcellsMcausingMmassiveM
depolarizationMallowingMcellsMtoMresetMthemselvesMandMcreateManMenvironmentMwhereM
SAMnodeMcanMtakeMbackMtheMpacemakerMfunction
PacingMDefinitionM-
MAnswerMElectricalMstimulationMofMheartMtoMpaceMforMbradyMrhythms
DrugMtreatmentMforMDysrhythmiasM-
MAnswerMPreferredMtreatmentMifMdysrhythmiaMisMnotMlifeMthreatening.M
IfMthereMisMaMsignificantMdropMinMbloodMpressureMorMlevelMofMconsciousnessMthanMde
fibrillationMorMcardioversionMmayMbeMnecessary
Questions and Answers
ImpulseMConductionMPathwayM-MAnswerMSAMNodeM--
>MInternodalMpathwaysM(AtrialMContraction)M-->MAVMNodeM(Delay)M-->MHis-
PurkinjeMSystemM(VentricularMContraction)
DysrhythmiasMCommonMCausesM-MAnswerMDecreasedMCoronaryMPerfusion
MyocardialMhypoxia
ElectrolyteMdisturbances
CardiacMMuscleMInjury
IschemiaMorMinfarction
DefectsMinMheartMmuscleMorMelectricalMsystem
CardiacMSurgery
ElectricalMStimulationMtoMtheMheartMmuscle
Medication
BestMleadsMtoMlookMatMforMAfib/AflutterM-MAnswerMII,MIII,MAVF
BestMLeadsMtoMAssessMJunctionalMRhythmsM-MAnswerMLeadMII
BestMLeadMtoMdetermineMBundleMCranchMBlocksM-MAnswerMV1MandMorMV6
STMSegmentMMonitoringMforMRCAM-MAnswerMIIIMorMaVF
STMSegmentMMonitoringMforMLAD/CircumflexM-MAnswerMV3
STMSegmentMMonitoringMforMActivityMInducedMIschemiaM-MAnswerMV5
STMSegmentMMonitoringMforMunknownMproblemM-MAnswerMIIIMorMV3
ECGMZonesMofMMIM-MAnswerM
, InferiorMWallMLeadsM-MAnswerMII,MIII,MAVF
"INF"
AnteriorMWallM-MAnswerMV1-V4
LateralMWallM-MAnswerMV5,MV6,MI,MaVL
BestMTMwaveM-MAnswerMV3,MV4,MII
ReciprocalMLeadMChangesM-MAnswerM
ReciprocalMLeadsMforMInferior:MII,MIII,MAVFM-MAnswerMI,MaVL
ReciprocalMleadsMforMHighMLateral:MIMaVLM-MAnswerMII,MIII,MaVF
ReciprocalMleadsMforMAnterior:MV1,MV2,MV3,MV4M-MAnswerMNONE
PosteriorMleadsM-MAnswerMNONEM-MyouMmayMseeMreciprocalMchangesMinMleadsMV1-V4
DefibrillationMorMCardioversionMDefinitionM-
MAnswerMPassingMofMelectricalMcurrentMthroughMcardiacMmuscleMcellsMcausingMmassiveM
depolarizationMallowingMcellsMtoMresetMthemselvesMandMcreateManMenvironmentMwhereM
SAMnodeMcanMtakeMbackMtheMpacemakerMfunction
PacingMDefinitionM-
MAnswerMElectricalMstimulationMofMheartMtoMpaceMforMbradyMrhythms
DrugMtreatmentMforMDysrhythmiasM-
MAnswerMPreferredMtreatmentMifMdysrhythmiaMisMnotMlifeMthreatening.M
IfMthereMisMaMsignificantMdropMinMbloodMpressureMorMlevelMofMconsciousnessMthanMde
fibrillationMorMcardioversionMmayMbeMnecessary