Key result
Helix-fixation leadless pacemaker implantation is linked to multiple RV pseudoaneurysms.
Why the study?
Leadless pacemaker systems, including helix-fixation types, are increasingly used but complications related to helix-fixation devices are not well characterized.
Case Report
Helix-fixation leadless pacemakers may be associated with the rare complication of multiple right ventricular pseudoaneurysms.
May signal rare complication of helix-fixation leadless pacemakers; hypothesis-generating and requires confirmation in larger cohorts.
Leadless pacemaker (LP) systems have been widely adopted as an alternative to transvenous pacemaker systems because they eliminate device pocket- and lead-related complications, particularly in elderly or frail patients.1 In Japan, two types of LPs are currently available: tine-fixation and helix-fixation systems. Owing to its active fixation mechanism, the helix-fixation LP can function as a dual-chamber pacemaker system using two devices—one implanted in the right atrium and the other in the right ventricle (RV).
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Hirose et al. (2026) conducted a case report in Right Ventricular Pseudoaneurysms. Helix-Fixation Leadless Pacemaker Implantation was evaluated. Helix-fixation leadless pacemaker implantation was associated with the development of multiple right ventricular pseudoaneurysms.
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