Transcatheter Occlusion of Patent Ductus Arteriosus Using a 0.052 - Inch Coil - Immediate Results -

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Coil occlusion of a patent ductus arteriosus (PDA) was attempted with a 0.052-inch Gianturco coil. The patients' ages and body weights at occlusion ranged from 5.8 to 19.7 (12.3±5.0, mean±SD) years and 18.9-99.1 (44.8±23.7)kg, respectively. Three types of 0.052-inch Gianturco coils with loop diameters (mm) and coil lengths (cm) of 6×8 (diameter×length), 8×8, or 8×10 were used. The delivery system was prepared as reported by Hays et al wih slight modification. The minimal diameter and the Qp/Qs of the PDA ranged from 2.3 to 4.7 (3.4±0.7)mm, and 1.1-1.8 (1.5±0.3), respectively. There were 7 cases with type A PDA and 3 with type B, and coils were successfully deployed in all. Complete occlusion in the catheter laboratory was achieved in 4 cases. A minor leak disappeared within 24h in 3 cases and at 3 months follow-up in 1 case. A tiny leak without a heart murmur persisted in 2 cases at 3 months' follow-up. No procedure-related complications occurred. This technique has significant advantages over previously reported techniques using a 0.038-inch coil for type B, or A PDA with a minimal diameter of 3-4mm or more.

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