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Updated: Mar 9, 2026

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Published on: April 21, 2013
Complications with the MICRA TPS Pacemaker System: Persistent Complete Heart Block and Late Capture Failure
Niels Holm1, Andreas Müller1, Rainer Zbinden1
1Department of Cardiology, Triemli Hospital, Zurich, Switzerland.
A novel leadless pacemaker (Micra Transcatheter Pacing System) experienced acute dysfunction two weeks post-implantation. This was likely due to microdislocation or fixation within the right ventricle, causing capture failure.
Area of Science:
- Cardiology
- Medical Devices
- Electrophysiology
Background:
- Sick sinus syndrome and left bundle branch block are common indications for cardiac pacing.
- Transcatheter aortic valve implantation (TAVI) is an increasingly utilized procedure for aortic stenosis.
- Leadless pacemakers offer a minimally invasive alternative to traditional transvenous systems.
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