Evaluation of left ventricular systolic synchrony in patients with Ⅲ grade atrio-ventricular block after pacemaker implantation by real-time three-dimensional echocardiography
10.3760/cma.j.issn.1004-4477.2010.01.001
- VernacularTitle:实时三维超声心动图评价Ⅲ度房室传导阻滞患者植入起搏器后左心室节段收缩同步性
- Author:
Cuizhen PAN
;
Xianhong SHU
;
Yangang SU
;
Fei YU
;
Junbo GE
- Publication Type:Journal Article
- Keywords:
Echocardiography,real-time three-dimensional;
Heart block;
Cardiac pacing,artificial;
Ventricular function,left
- From:Chinese Journal of Ultrasonography
2010;19(1):1-4
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate left ventricular systolic synchrony in patients with Ⅲ grade atrio-ventricular block(Ⅲ grade AVB) after pacemaker implantation by real-time three-dimensional echocardiography. Methods Methods Twelve patients with Ⅲ grade AVB implanted by VVI pacemaker, seven patients with Ⅲ grade AVB implanted by DDD pacemaker, twenty subjects with normal LV function were examined by Philips iE33 with a X3-1 probe. Results The minimal excursion in patients with Ⅲ grade AVB implanted by VVI pacemaker and DDD pacemaker was less than that in subjects with normal LV function (P <0.05) ,and two "bull eyes" displayed that some regional systolic timing delayed or ahead, but also some regional systolic excursion hypokinesis or dykinesis. Parameter index [including Tmsv 16-SD, Tmsv 12-SD, Tmsv 6-SD, Tmsv 16-Dif, Tmsv 12-Dif, Tmsv 6-Dif, Tmsv 16-SD (%), Tmsv 12-SD (%), Tmsv 6-SD (%), Tmsv 16-Dif (%), Tmsv 12-Dif (%), Tmsv 6-Dif(%)] of 17 segment time to minimal systolic volume in patients with Ⅲ grade AVB implanted by VVI pacemaker and DDD pacemaker was more than that in subjects with normal LV function (all P < 0.05). Conclusions Real-time three-dimensional echocardiography can rapidly evaluate left ventricular systolic synchrony in patients with Ⅲ grade AVB implanted by DDD pacemaker and VVI pacemaker.
