Arrhythmias & electrophysiology
Comparison of 30-day complications between a tine-based and a screw-in helix fixation single-chamber ventricular leadless pacemaker: Results of a propensity score–matched analysis from a multicenter, nationwide registry
Authors' conclusion
The risk of acute device-related complications associated with Aveir VR and Micra VR L-PM implantation was similar. These findings suggest that despite differences in design, fixation mechanism, and implantation technique, these 2 devices appear to have a similar short-term safety profile.
Study context
- Population
- Consecutive patients who underwent Aveir VR or Micra VR single-chamber ventricular leadless pacemaker implantationenrolled (75.9 ± 14.8 years, 60.2% male), propensity score matching yielded 189 matched pairs
- Participants
- 1,141 patients
- Exposure
- Aveir VR vs Micra VR implantation
- Aveir VRn = 211
- Micra VRn = 930
Methodological detailsconsecutive patients, Individual 1:1 propensity score matching of baseline characteristics, nationwide
- Consecutive patients
- Individual 1:1 propensity score matching of baseline characteristics
- Nationwide
Safety
Device-related complications · 30 days of follow-up · similar · matched cohort
P = 1
Device migration · no significant difference · most frequent complications
P = 0.315
Vascular complications · no significant difference
P = 0.562
Events
| Outcome | Aveir VR | Micra VR |
|---|---|---|
| Cardiac perforation | 0 | 1 |
Cardiac perforation
- Cardiac perforation was rare
Original publication
Comparison of 30-day complications between a tine-based and a screw-in helix fixation single-chamber ventricular leadless pacemaker: Results of a propensity score–matched analysis from a multicenter, nationwide registry. Heart Rhythm. Published 10 March 2025. doi:10.
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