An Unusual Case of Embolic Stroke: A Permanent Ventricular Pacemaker Lead Entirely Within the Arterial System Documented by Transthoracic and Transesophageal Echocardiography.

A pacemaker lead in the left ventricle is a rare complication of implantation. Recognition of this complication is important because thromboembolic events are associated. We report the first case, to our knowledge, of a patient who had a permanent pacemaker implanted via the left subclavian artery to the left ventricle, which is documented by electrocardiography, chest radiography, thoracic echocardiography, and transesophageal echocardiography.