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Symptomatic obstruction of the superior vena cava can be caused by either intrathoracic malignancy or nonmalignant etiology, resulting in superior vena cava syndrome (SVCS). The widespread use of central venous catheters, ports, pacemakers, and defibrillators has increased the incidence of benign SVCS. We present a post-pacemaker-implantation case of SVCS manifesting as positional syncope. The percutaneous intervention of stent implantation after lead removal followed by reimplantation of the leadless pacemaker may be a potential alternative treatment for pacemaker-induced SVCS, since some cases eventually may require repeat intervention.

the journal of innovations in cardiac rhythm management

Change from Cardioinhibitory Syncope to Iatrogenic Positional Syncope: Superior Vena Cava Syndrome Treated by Superior Vena Cava Stenting and Leadless Pacemaker Implantation