Pacemaker-Induced Superior Vena Cava Syndrome.

Superior vena cava (SVC) syndrome is a result of impaired blood flow from the SVC to the right atrium, leading to venous congestion in the head and neck. It can be caused by clotting disorders or compressive tumors of the head and neck but has become more prevalent in the setting of implantable devices such as pacemakers. As such, managing these patients can present challenges for physicians who have to account for SVC syndrome as well as their underlying condition requiring an implantable cardiac device. Our case represents one such patient who developed SVC syndrome as a result of pacemaker lead-related formation that was treated with both invasive and noninvasive therapy. This presentation highlights the successful management of SVC syndrome in a patient with sick sinus syndrome. It also demonstrates the efficacy of balloon angioplasty in managing this particular type of SVC syndrome, as well as exemplifying the use of leadless pacemaker devices as a means of long-term prevention.