Chest radiographs confirmed appropriate positioning of the leadless pacemaker within the right ventricle. 

Leadless pacemakers were developed to minimize lead and pocket-related complications, such as infection. They consist of a self-contained generator and electrode. This patient has the Medtronic Micra (25.9 mm x 6.7 mm), which is a right ventricular single-ventricle pacemaker implanted via a percutaneous femoral catheter-based approach. Another leadless pacemaker, the Abbott Nanostim (42.0 mm x 5.99 mm), was previously in use but has since been recalled.

This case was submitted with supervision and input from:

Soni C. Chawla, M.D.

Associate Professor
Department of Radiological Sciences
David Geffen School of Medicine at UCLA
Olive View - UCLA Medical Center