Clinical value of evaluating left ventricular mechanical synchrony by gated blood pool imaging and tissue Doppler imaging
10.3760/cma.j.issn.1008-6315.2010.08.008
- VernacularTitle:门控心血池显像和组织学超声对比评价左心室机械运动同步性的价值
- Author:
Xiaomei WANG
;
Xiaobin ZHAO
;
Ping LI
;
Cuihua WANG
;
Jin LONG
;
Yunzhou HUANG
;
Rongfang SHI
;
Ziwen REN
- Publication Type:Journal Article
- Keywords:
Congestive heart failure;
Gated blood pool imaging method;
Tissue Doppler imaging;
Mechanical synchrony
- From:
Clinical Medicine of China
2010;26(8):804-806
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the clinical value of the gated blood pool imaging phase analysis method in the evaluation of left ventricular mechanical synchronization in patients with chronic heart failure. Methods A total of 169 patients with chronic heart failure were enrolled in our study , using gated blood pool imaging phase analysis method to obtain left ventricular phase angle width ( PHB) and left ventricular phase angle standard deviation ( PSD) as evaluating left ventricular mechanical synchrony index; using tissue Doppler imaging (TDI) measurement of the standard deviation of systolic peak time(Ts-SD) of each segment by using the current prevailing 12 non-apical segments analysis method as evaluating left ventricular mechanical synchrony index, and parameters derived from both methods were compared. Results LVPHB was highly correlated with Ts-SD (r = 0. 83 ,P = 0. 000 ) . LVPSD was modestly correlated with Ts-SD ( r - 0. 69, P = 0. 000) . The ejection fraction measured by echocardiography was (42.93 ± 14. 89) % ,which was significantly higher than that measured by ERNA (39. 76 ± 17. 89)% (P <0. 01). Conclusions The evaluation of left ventricular mechanical synchrony in patients with chronic heart failure by the gated blood pool imaging can provide similar information with TDI, which can simultaneously measure two ventricular functions and get more accurate measurement of ejection fraction. Cardiac resynchronization therapy patients can be identified by combining two kinds of approaches, and cardiac resynchronization therapy responders could be improved as well. More patients with heart failure can benefit from cardiac resynchronization therapy therapy.
