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Objective To study the relationship of arrhythmias and heart electrical parameters changes after transcatheter closure of ventricular septal defect (VSD). Method 50 patients had been successfully finished the transcatheter closure of ventricular septal defect, and then we observed relationship of arrhythmias and heart electrical parameters changes. Results (1) Compared with the situation of VSD occluder preoperative and postoperative, during follow-up there were 20 arrhythmia cases, including bundle branch block 16 cases, including the complete left bundle branch block 2 cases, complete right bundle branch block 4 cases, a transient third-degree trioventricular conduction block 1 case, most return to normal in the follow-up. 2 Intracavitary electrogram showed before and after transcatheter closure: A-V conduction parameters A-H, H-V value of (75.10 ± 14.34) ms vs (80.67 ±23.03) ms and (47.9 ± 12.61) ms vs (50.07 ± 15.23) ms, the difference was not statistically significant (P>0.05). Conclusions (1) Some patients with new ECG changes after transcatheter closure of VSD, manifested as an increase in bundle branch block in a week, but most return to normal, the prognosis is good. (2) Intraoperative A-H, H-V extension is not related with with postoperative slow arrhythmia; (3) Arrhythmia is a common complication after VSD transcatheter closure, to strictly selected indications, and to avoid too large diameter are the effective measures to reduce the arrhythmias after transcatheter closure of ventricular septal defect (VSD). [ABSTRACT FROM AUTHOR]

Objective To discusses the efficacy and safety of patent ductus arteriosus sealing for low body weight children. Methods From January 2008 to June 2012 in our hospital, 32 cases (male 14 and female 18) of PDA babies < 8 kg weight were given transcatheter closure treatment. The enrolled PDA babies aged 6 month-18 months, average (11 ± 5.5 months), weighted (7.2 ± 0.6) kg, aortic imaging showed the narrowest diameter of PDA was 1 ~ 8 mm (4.6 ± 1.7) mm, descending aorta imaging was performed immediately and 30 min after transcatheter closure treatment. Echocardiography and X-ray radiography examination were performed 1d, 1, 3, 6 months after treatment. Results 30 cases got successful patent ductus arteriosus sealing, all the successful patients were treated with domestic closer, and 1 case was complicated with the descending aorta stenosis and ventricular septal defect, and was transferred to surgerical treatment. 1 case of PDA gave up patent ductus arteriosus sealing as descending aorta stenosis caused by the closer. 2 cases were found a trace-residual shunt immediately after patent ductus arteriosus sealing. No serious complications were found in all patients during the follow-up period. Conclusions Application of domestic closer in treatment of PDA infants < 8 kg is a safe, effective and simple intervention treatment method with little trauma and fast recovery. [ABSTRACT FROM AUTHOR]