摘要
Abstract
Objective:To evaluate the efficacy of balloon dilatation pulmonary in the prevention of pulmonary regurgitation (PR) after surgical repair of tetralogy of Fallot(TOF).Method:A total of 36 cases with TOF were performed under hypothermia,general anaesthesia with cardiopulmonary bypass from January 2012 to January 2015.According to the methods of repair of right ventricular outflow tract,patients were divided into two groups:transannular patch group(n=19) and balloon dilation group(n=17).The pulmonary valve ring and Z value,the degree of PR was measured by echocardiograph at discharge and 1 year after operation respectively in two groups.Result:89.5% patients in transannular patch group get moderate and above degree of PR after surgery, and the proportion of severe degree of PR reached 42.1%.Only 23.5% of patients in balloon dilatation group get moderate degree of PR after surgery,and no patients had severe PR.There were statistically significant different between two groups(P<0.001).After 1 year,in transannular patch group,patients with moderate and above degree of PR increased to 94.4%,severe regurgitation ratio increased to 61.1%.In balloon dilation group,the proportion of moderate degree of PR increased to 35.3%,still did not appear severe degree of PR.There were statistically significant different between two groups(P<0.001).Pulmonary valve annulus diameter and Z value were increased significantly(P<0.001) and gradually reached the normal level(Z value>-2) from discharge to 1 year follow-up in balloon dilation group.It showed that pulmonary valve ring has obvious growth with time migration after the balloon dilatation.Conclusion:For the pulmonary valve with mild to moderate dysplasia in patients with tetralogy of Fallot,using balloon dilation to retain pulmonary can effectively prevent postoperative pulmonary regurgitation.关键词
法洛四联症/法洛四联症根治术/球囊扩张/肺动脉瓣反流Key words
Tetralogy of Fallot/Radical corrections of Tetralogy of Fallot/Balloon dilation/Pulmonary regurgitation
