Catheter closure of patent ductus arteriosus by mushroom shape occluder in infants
AIM:To evaluate the treatment efficiency of catheter closure of patent ductus arteriosus (PDA) by mushrooms occluder in infants. METHODS: Seventy-eight cases of infant PDA (28 males and 50 females) underwent attempted catheter closure by using mushroom shape occluder with the median age of (15. 8 ± 5.6) months( ranging 8 to 36 months) and the mean weight of 7.8 - 17.5 (12. 0 ± 4. 3) kg. Pulmonary arterial pressure,aortic pressure and oxygen saturation were measured. The mean PDA diameter of narrowest segment was 1.5 -14.3(4.3 ±3.1) nun by aortography. Lateral descending aortographies were performed to evaluate the immediate results 30 min after the procedure and follow-up evaluations were performed with color flow mapping respectively at 24 h,1,3,6 months and 1 year after closure. RESULTS: The devices were successfully placed in 74(94.9% ) of the 78 cases. Complete angiographic closure was seen 30 min after the device deployment in 52 of the 74 cases (70.3% ) while small leaks were presented in 22 cases (29. 7%). Complete echocardiographic closure was observed in 71 out of the 74 patients (95.9% ) at 24 h and 100% at 1 month after the procedure. No PDA recanalization and migration of the devices and no complications were seen after the complete occlusion during 1-12 months follow-up. CONCLUSION: Catheter closure of infant PDA using the mushroom shape occluder is a safe and effective interventional therapy under strict indication selection.