Value of ventricular electrogram recordings in the diagnosis of arrhythmias precipitating electrical device shock therapy
Key result
Ventricular electrogram analysis definitively diagnoses the precipitating arrhythmia in all 3 out-of-hospital shock patients.
- n=16
Why the study?
The clinical value of storing and analyzing ventricular electrograms before and after device shock therapy for arrhythmia diagnosis was not established.
Does the storage and analysis of ventricular electrograms enable definitive diagnosis of arrhythmias precipitating shock therapy in patients with implantable cardioverter-defibrillators?
Population
16 patients implanted with an antitachycardia pacemaker-cardioverter-defibrillator
Comparison
Storage and analysis of ventricular electrograms before and after device shock therapy
Design
Observational case series
Authors
Discussion
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Overview
May aid post-shock arrhythmia diagnosis in ICD patients; hypothesis-generating for routine electrogram storage.
Study Design
Type
Observational (n=16)
Structured PICO
Does the storage and analysis of ventricular electrograms enable definitive diagnosis of arrhythmias precipitating shock therapy in patients with implantable cardioverter-defibrillators?
P
Population
16 patients implanted with an antitachycardia pacemaker-cardioverter-defibrillator capable of storing ventricular electrograms.
E
Exposure
Storage and analysis of ventricular electrograms before and after delivery of device shock therapy
O
Outcome
Definitive diagnosis of arrhythmias precipitating device shock therapy
Storing ventricular electrograms before shock therapy represents a major advance in managing patients with electrical devices for ventricular tachyarrhythmia by enabling definitive diagnosis of the precipitating event.
Limitations
- Limitations of electrogram analysis
- Limitations of electrogram analysis exist
Cite This Study
Hook et al. (1991) conducted an observational in Ventricular tachyarrhythmia (n=16). Ventricular electrogram storage was evaluated on Diagnosis of arrhythmias precipitating electrical device shock therapy. Analysis of stored ventricular electrograms established a definitive diagnosis of the precipitating arrhythmia in all three patients who experienced out-of-hospital device shock therapy.