摘要
Abstract
Objective:To evaluate the value of echocardiography in FIG dual chamber pacemaker patients in left ventricular function assessment.Methods: From January 2014 to January 2016 in our hospital, 60 cases with dual chamber pacemaker implantation were randomly divided into observation group and control group, each with 30 cases. The observation group were treated with echocardiographic guidance optimized atrioventricular interval, and the control group with empirical programmed AV interval, respectively. We check their echocardiography before surgery and 3 months and 6 months after surgery. And we comparatively observed their mitral early diastolic flow velocity (E), late diastolic velocity (A), E wave deceleration time (DT), peak early diastolic mitral annular velocity (Em), isovolumic relaxation time (IVRT), left atrial volume index (LAVI), NYHA functional class (NYHA), 6-minute walk test (6MWT), left ventricular ejection fraction (LVEF), left ventricular end-diastolic diameter (LVEDD), aortic valve velocity time integral (VTI), brain natriuretic peptide levels (Pro-BNP), cardiac output (CO), cardiac index (CI), A / E ratio and cardiac stroke volume and other indicators.Results: After 6 months, LVEF, VTI, 6MWT and Pro-BNP and other indicators in the observation group improved significantly than that in the control group. The difference were statistically significant (t=2.683,t=3.832,t=4.168,t=3.479;P<0.05). VP, LVEDD and NYHA grading and other indicators were no significant different (t=0.813,t=1.832,t=1.034;P>0.05). Two indicators of HR and CO in the observation group improved significantly than that in the control group (t=4.328,t=3.132;P<0.05). The other indicators including SV, CI and A/E were no significant different.Conclusion: Echocardiography is non-invasive and easy to operate. It can be effective for a dual chamber pacemaker implantation in patients with left ventricular function, and it is worth popularizing in clinical application.关键词
超声心动图/左心室功能/双腔起搏器/房室间期Key words
Echocardiography/Left ventricular function/Dual-chamber pacemaker/AV interval分类
医药卫生
