Midterm outcome of percutaneous transcatheter coil occlusion of coronary artery fistula.

The mid- to long-term outcome of pediatric patients with coronary artery fistula (CAF) after transcatheter closure remains unknown. This study reports the midterm outcome of CAF closure by transcatheter Gianturco coil occlusion in pediatric patients. Eighteen patients with CAF confirmed by coronary angiography were seen in our institution. Among them, 4 patients who had persistent coronary artery dilatation received transcatheter Gianturco coil occlusion (age range, 25 months to 12 years; mean, 4.6 years). Two were closed with a single coil, and two were closed with two coils. No residual shunts were detected on follow-up angiography and echocardiography immediately after coil occlusion in all cases. Follow-up Doppler echocardiography (4/4) and angiography (3/4) showed persistent CAF occlusion in all 4 patients. Two of 3 patients with coexistent aneurysmal formation showed obliteration of the aneurysm on angiographic follow-up. In addition, 2 showed resumption of normal coronary arterial size, and 2 showed decrement of the coronary arterial diameter. All 4 patients had normal ECG findings after 26-83 months (mean, 49 months) of follow-up, and all were in NYHA functional class I. The midterm outcome of percutaneous transcatheter coil occlusion in the treatment of CAF is excellent.