Arrhythmias & electrophysiology
SMART Pass automatic deactivation of subcutaneous implantable cardioverter-defibrillators
Authors' conclusion
The rate of inappropriate shocks was numerically higher after SMART Pass deactivation. A low QRS amplitude in S-ECG was a potential risk factor for SMART Pass deactivation.
Study context
- Population
- Patients who underwent subcutaneous ICD implantation between 2016 and 2021
- Participants
- 115 patients
- Exposure
- SMART Pass deactivation vs SMART Pass consistently on
- SP-OFFn = 12
- SP-ONn = 87reference
- Outcome
- Inappropriate shocks
- Follow-up
- Median 1094 (IQR 887-1502) days
Main finding
As reported in the abstract
SP-OFF
3
events
SP-ON
4
events
Observational data: associations, not effects.
Further findings
| Outcome | Estimate | P value |
|---|---|---|
| S-ECG QRS amplitude, pre vs at SMART Pass deactivationSignificant temporary drop led to SMART Pass deactivation | (95% CI 0.3–1.9) | P = 0.015 |
Pre- and post-S-ECG QRS amplitudes
- Significantly lower in SP-OFF than SP-ON
- both P < .05
- Similar 12-lead electrocardiogram (ECG) QRS amplitude in both groups
Original publication
SMART Pass automatic deactivation of subcutaneous implantable cardioverter-defibrillators. Heart Rhythm. Published 23 August 2024. doi:10.
Composed by AI from the published abstract and checked against it. How Briefs are made →