title: Pacemaker-associated cyanosis in an adolescent: The answer hiding behind shadows.
abstract: Lead thrombosis is a recognized complication of permanent transvenous pacemaker (PM) implantation. We present the interesting case of an adolescent with a dual-chamber PM presenting with fatigue and hypoxemia. Due to limitations of various imaging modalities, the diagnosis was difficult. She was eventually diagnosed with intracardiac PM lead thrombi obstructing tricuspid valve inflow. The pediatric literature on PM lead thrombosis is also briefly reviewed.
authors.affiliation: Pediatric Residency Program, University of Washington, Seattle, WA.
authors.forename: Sg
authors.initials: S
authors.lastname: Wittekind
authors.forename: Jc
authors.initials: J
authors.lastname: Salerno
authors.forename: Ae
authors.initials: A
authors.lastname: Rubio
keywords: Pacemaker; intracardiac thrombosis; paediatrics; thrombosis; transesophageal echocardiography; transvenous pacemaker