Author + information
- R. Zbinden,
- T. Rizzo,
- C. Franzini,
- R. Dillier,
- A. Müller and
- N. Holm
The Medtronic MICRA transcatheter pacing system (MICRA TPS) is a recently introduced leadless single-chamber pacing system. We compared the safety and performance of the MICRA TPS with conventional transvenous single chamber pacemakers (conventional VVI) implanted at our centre.
This retrospective, observational single center study included 30 consecutive patients receiving a MICRA TPS and 33 historical control patients receiving a conventional VVI system at our centre.
Average procedure time was 41.2 ± 14 minutes for the MICRA TPS group and 34.3 ± 19.5 minutes for the conventional VVI group (p=NS). Fluoroscopy time was significantly longer in the MICRA TPS group compared to the conventional VVI group (10.3±6.8min vs 4.8±2.5min; p=0.01). There were significantly more periinterventional complications in the MICRA TPS group compared to the conventional VVI group (20% vs 3%; p=0.03). Mean follow up time was 95 ± 26 days. There were 3 adverse events in the MICRA TPS group compared to 1 in the conventional VVI group (p=NS).
The new MICRA TPS is an alternative to conventional VVI pacing with comparable short term performance. There is a learning curve with more periprocedural complications in the first cases. Radiation times are significantly higher with the MICRA TPS system.