PERCUTANEOUS CLOSURE OF PATENT DUCTUS-ARTERIOSUS USING SPECIAL SCREWING DETACHABLE COILS

Jackson screwing detachable coils, developed for arterial and venous e mbolization, have been successfully employed recently for the percutan eous occlusion of patent ductus arteriosus (PDA), Special screwing det achable coils were designed for closure of the PDA, and the experience gained by their use is described in this report, Occlusion was attemp ted in 29 patients with a minimal ductal diameter of 0.9-4.2 mm, Coils were successfully placed in all 29 patients, One coil, which embolize d 10 min after detachment, was retrieved. In 26 patients (89%), comple te closure was achieved, Only 35 coils were placed in 29 patients, Res idual shunts in three patients are minimal, detectable only on color-f low mapping, Screwing detachable coils for closure of PDA are safe and effective for occlusion of PDA with a minimal diameter <4.2 mm. Embol ization of the coil is very rare, A high closure rate is achieved with a low number of placed coils. (C) 1997 Wiley-Liss, Inc.