Arrhythmias & electrophysiology
Relationship between activity and sleep, as measured through a wearable accelerometer, and appropriate cardioverter defibrillator interventions: a prospective SafeHeart substudy
Authors' conclusion
Wearable-derived 24 h movement and sleep behaviours collected over 28 days were associated with later appropriate ICD therapy risk.
Study context
- Population
- Patients with an implantable cardioverter defibrillator (ICD) wearing wrist-based accelerometers for 28 days
- Participants
- 253 patients
- Exposure
- Wearable-derived activity and sleep measures and appropriate ICD therapy
- Outcome
- Appropriate ICD therapy
- Follow-up
- 12 months
Methodological detailssubstudy of SafeHeart, 2 European sites
- Substudy of SafeHeart
- 2 European sites
Main finding
As reported in the abstract
- Received appropriate ICD therapy
- 40 (15.8%)
- Anti-tachycardia pacing (ATP) only
- 32 (12.6%)
- Shock only
- 5 (2.0%)
- Combined ATP and shock
- 3 (1.2%)
- High inactive duration, adjusted HR
- 1.40 (1.10-1.78) (95% CI)
- Peak walking cadence, adjusted HR
- 1.07 (1.03-1.12) (95% CI)
- Total sleep duration, adjusted HR
- 1.50 (1.02-2.22)
Observational data: associations, not effects.
Further findings
Prediction model performance
- AUC
- 0.70 ± 0.03
- Highest accuracy in the first months
Original publication
Relationship between activity and sleep, as measured through a wearable accelerometer, and appropriate cardioverter defibrillator interventions: a prospective SafeHeart substudy. Europace. Published 20 September 2024. doi:10.
Composed by AI from the published abstract and checked against it. How Briefs are made →