title: Inadvertent positioning of pacemaker leads in the pericardium.
abstract: A patient had a dual chamber pacemaker with endocardial leads implanted chronically. The lead position on chest X ray and the ECG pattern indicated lead malposition, but a CT scan and transesophageal echocardiography were nondiagnostic. Venography indicated that both leads were in the mediastinal and pericardial space.
mesh_terms: D000368:Aged; D005260:Female; D006801:Humans; D019300:Medical Errors; D010138:Pacemaker, Artificial / Q000009:adverse effects*; D010496:Pericardium; D010690:Phlebography