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. Diagnosis and intervention of an inadvertently placed lead is essential. This is a case of a defibrillator lead inadvertently inserted into the left cavity, discovered 6 years after implantation.