Effectiveness of transvenous pacemaker leads placed through intravascular stents in patients with congenital heart disease.

Eight patients with venous obstruction secondary to Mustard baffle obstruction or previous transvenous pacemaker leads underwent intravascular stent relief of their obstructions followed by the insertion of new leads. Patients were followed from 1.3 to 6.3 years (median 3) by clinical, hemodynamic, angiographic, and intravascular ultrasound methods and pacemaker evaluations. The median stent patency was 84%, with 1 patient developing complete stent occlusion. Pacing energy thresholds and impedances remained unchanged.