Myocardial Motion Velocity Detected by Tissue Doppler Imaging for Idiopathic Premature Ventricular Beat
10.3969/j.issn.1000-3614.2009.03.011
- VernacularTitle:特发性室性期前收缩患者心肌运动速度的变化及意义
- Author:
Hui SUN
;
Minghua XUE
;
Xing WANG
;
Mei GAO
;
Jiangrong WANG
;
Tian WANG
;
Yinglong HOU
- Publication Type:Journal Article
- Keywords:
Premature ventricular beat;
Myocardial motion velocity;
Tissue Doppler imaging
- From:
Chinese Circulation Journal
2009;24(3):198-201
- CountryChina
- Language:Chinese
-
Abstract:
Objective: To detect the systolic and diastolic velocity in patients with idiopathic premature ventricular beat(PVB)by pulsed wave-tissue Doppler imaging (PW-TDI) techniques.Methods: There were two groups involved in this study. PVB group,n=30,patients with idiopathic PVB,and Control group,n=30,of healthy subjects. The changes of cardiac function were measured and compared between two groups by the index of myocardial motion velocity using PW-TDI techniques.Results: A total of 7 sites were studied,there were no significant differences in systolic peak velocities (Sm),time velocity integral (TVI),peak velocity of the early relaxation wave (Em),peak velocity of the later relaxation wave (Am) and Em/Am ratio (Em/Am) between the Control group and PVB group in the normal sinus beat (P＞0.05).Compared with the normal sinus beat,Sm,TVI,Em and Em/Am were significantly lower in PVB (P<0.01),while Sm,TVI,Em in the post-PVB sinus beat were significantly higher than that in normal sinus beat (P<0.01). However,there were no significant differences of Am in each site among the normal sinus beat,PVB and the post-PVB sinus beat. Conclusion: PVB and PVB-induced compensational interval could significantly influence the systolic and diastolic function of the ventricle.
