Arrhythmias & electrophysiology
Successful defibrillation testing in patients undergoing elective subcutaneous implantable cardioverter-defibrillator generator replacement
Authors' conclusion
This study shows a high DFT conversion rate at elective S-ICD generator replacement, which is comparable to conversion rates at implant, despite a rise in shock impedance.
Study context
- Population
- Patients undergoing elective subcutaneous implantable cardioverter-defibrillator (S-ICD) generator replacement for battery depletion with defibrillation test (DFT), February 2015–June 2022
- Participants
- 121 patients
- Exposure
- DFT at S-ICD generator replacement vs at implant
- Outcome
- DFT conversion efficacy (unsuccessful when two conversions at 65 J failed)
Methodological detailssingle-centre (tertiary centre)
- Single-centre (tertiary centre)
Main finding
As reported in the abstract
DFT conversion success at elective S-ICD generator replacement
DFT successful after first test
95%
DFT successful after two consecutive tests
98%
Observational data: associations, not effects.
Further findings
Shock impedance · significant rise
P < 0.001
Unsuccessful DFT at 65 J
- Both patients with unsuccessful DFT at 65 J converted with 80 J
- 2
Original publication
Successful defibrillation testing in patients undergoing elective subcutaneous implantable cardioverter-defibrillator generator replacement. Europace. Published 28 June 2023. doi:10.
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