Improvement of diastolic function in patients with congestive heart failure after cardiac resynchronization therapy by echocardiography
10.3760/cma.j.issn.1004-4477.2013.01.005
- VernacularTitle:超声对充血性心力衰竭患者再同步化治疗术后舒张功能改善的评价
- Author:
Jinling CHEN
;
Ruiqiang GUO
;
Fengxia JIANG
;
Sheng CAO
- Publication Type:Journal Article
- Keywords:
Echocardiography;
Heart failure,congestive;
Ventricular function,left;
Cardiac resynchronization therapy
- From:
Chinese Journal of Ultrasonography
2013;(1):17-20
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the diastolic function in patients with congestive heart failure (CHF) after cardiac resynchronization therapy (CRT) by conventional echocardiography or Doppler tissue imaging (TDI).Methods 31 patients with CHF were divided into responders to CRT (group R) and nonresponders to CRT (group N) according the standard of a decline in left ventricular(LV) end-systolic volume ≥10％.All the patients received echocardiography examination 1-3 days before CRT and 6 month after CRT.Color M-mode echocardiography indices included Vp,E/Vp.TDI indices included the peak velocity in early diastole (e) at 4 sites of mitral annulus,E/e,time to peak velocity in systole (Ts),Ts-SD and maximum difference of Ts (Ts-Dif) among 12 segments.Results Compared with before CRT,Ts-SD and Ts-Dif significantly shortened in group R;Vp increased significantly,E/e at each 4 site and mean value at 4 sites of mitral annulus,E/Vp decreased significantly; but there were no significant difference in group N.There were significant positive correlation between mean value at 4 sites of E/e,E/Vp and Ts-SD in group R.Conclusions The diastolic function in responders to CRT improved after CRT,which was associated with the decreased LV filling pressure and improved LV relaxation.
