Avoidance and early diagnosis of erroneous permanent pacemaker placement into the left ventricle: A case report.

Diagnosis of a pacemaker inserted through the subclavian artery is essential due to risk of thromboembolism. Fluoroscopy, ECG, and other imaging techniques must be used to diagnose the condition, and appropriate treatment path must be administered.

Saved by anticoagulants: Incidental discovery of a misplaced defibrillator lead 6 years after implantation. Inadvertent lead placement inside the left ventricular cavity.

Device insertion is a common cardiovascular procedure. Devices are implanted into the right heart, acting as a safeguard against systemic thromboembolism. Lead insertion into the left ventricle is rare, but carries dangerous consequences of thromboembolic events.