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Published on: December 16, 2021
The subtle tine: Asymptomatic Micra perforation incidentally discovered during cardiac surgery
Nicholas Y Tan1, Malini Madhavan1, Kevin L Greason2
1Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota, USA.
Abstract:
A 70-year-old woman with longstanding persistent atrial fibrillation underwent Micra leadless pacemaker implantation and atrioventricular nodal ablation. No postprocedural complications were noted. She subsequently underwent surgical mitral valve replacement 4 years later. During the surgery, Micra tine perforation of the right ventricular free wall was seen. No device revision was performed due to her asymptomatic status and stable pacemaker position/function. Pericardial effusion is a known complication of Micra implantation. The incidence of tine perforation is unknown as many patients may be asymptomatic. The clinical consequences regarding adverse events, device functionality, and explantation/extraction risk profile remain to be determined.
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