We report a case in which the Amplatzer device for percutaneous occlusion of ductus arteriosus was successfully used for occluding a large systemic-pulmonary collateral vessel in a patient who had previously undergone surgery for correction of pulmonary atresia and ventricular septal defect (Rastelli technique), and was awaiting the change of a cardiac tube. In the first attempt, the device embolized to the distal pulmonary bed and, after being rescued with a Bitome, it was appropriately repositioned with no complications and with total occlusion of the vessel.Based on the publication of results of convincing experimental studies 1 , the new Amplatzer device for percutaneous occlusion of ductus arteriosus (AGA Medical Corporation, Golden Valley, MN, USA) has been shown to be safe and highly effective in clinical practice [2][3][4][5] . Due to the versatility of the implantation system and the characteristics of the prosthesis, it has also been used for occlusion of other defects and vascular malformations, such as coronary and pulmonary arteriovenous fistulae, systemic-pulmonary shunts (Blalock-Taussig), venovenous collaterals after Glenn surgery, tubes, fenestrated Fontan, and others 6-8 . We report a case in which this device was successfully used for closure of a large systemic-pulmonary collateral vessel originating from the descending aorta.
Case ReportThe patient is a 17-year-old male who underwent surgical repair of pulmonary atresia, ventricular septal defect, and systemic-pulmonary collaterals at the age of 7 years. The collaterals were focalized, the ventricular septal defect was occluded with a patch of bovine pericardium and an 18-mm Dacron tube graft, which was used to reestablish the continuity between the right ventricle and the pulmonary artery (Rastelli technique). The patient complained of mild fatigue on exertion, and on physical examination an ejective systolic murmur in the middle left sternal margin and a continuous murmur in the dorsum could be heard. On chest X-ray, slight cardiomegaly and increased pulmonary flow to the right middle and lower lobes were observed. The electrocardiogram showed sinus rhythm and biventricular hypertrophy. The twodimensional Doppler color flow echocardiogram showed signs of obstruction of the tube with rectification of the ventricular septum during systole. Right ventricular pressure was estimated in approximately 3/4 of the arterial blood pressure through tricuspid reflux. Moderate pulmonary insufficiency also existed. The patient was referred for cardiac catheterization for diagnostic complementation, and the examination, performed with the patient under local anesthesia, showed the following pressure levels (in mm Hg): right atrium, 9; right ventricle, 90/10; pulmonary artery, 30/11; left ventricle, 110/12; and aorta, 110/ 60. Right ventriculography revealed obstruction of the tube in its proximal portions, next to the right ventricular musculature, and mild to moderate systolic dysfunction. The aortogram, followed by selective injection in the vessel, sho...