A Series of Unfortunate Events: Long-neglected Malpositioned Pacemaker and its ConsequencesAbdelrahman Osman, BS and Ali Ahmad, MD.

Pacemakers are implanted through the subclavian vein to the right side of the heart. In rare cases, pacemakers may be inserted into the left ventricle via the subclavian artery, carrying a risk of thromboembolism. This is a case of a pacemaker inserted via the subclavian artery into the left ventricle.

Device insertion is a common cardiovascular procedure. Devices are implanted into the right heart; which is a safeguard against systemic thromboembolism. Lead insertion into the left ventricle is rare. This is a case of a defibrillator lead inadvertently inserted into the left cavity. This was discovered 6 years later.