Pacing and Clinical Electrophysiology · 1987 · 32 citations · 8 references
MedicineCardiologyElectrical EngineeringBioinstrumentationClinical CardiologyElectrophysiologyCardiac ArrhythmiasCardiac Conduction SystemCardiac PacingCardiovascular MonitoringElectrocardiographyIntracardiac ElectrophysiologyHeart Rhythm AssessmentHeart Rhythm EvaluationImplantable Cardioverter DefibrillatorsIntracardiac PacingPacemaker ElectrocardiographyPermanent Pacemaker TherapyQrs Complex Detection
A patient with an automatic implantable cardioverter defibrillator (AICD) received two inadvertent shocks when a magnet was placed over the pacer during a routine permanent pacer check. Analysis of the rhythm strip suggested that both patients' QRS complexes (133 beats/minute) and asynchronous pacer artifacts (70 beats/minute) were counted by the AICD sensing system and exceeded the rate criteria of 153 beats/minute. This resulted in shocks from the AICD during sinus rhythm at 133 beats/minute. To avoid possible inadvertent shocks, an AICD should be deactivated while a magnet is placed over the pacemaker during a permanent pacer check.
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Considerations in the development of the automatic implantable defibrillator.
A Langer, Heilman Ms, Mower Mm et al. · PubMed · 1976 · 118 citations