Evaluation of left ventricular function in children with dilated cardiomyopathy using quantitative tissue velocity imaging(QTVI)
- VernacularTitle:利用组织速度成像评价儿童扩张型心肌病左心功能的临床探讨
- Author:
Fu XIONG
- Publication Type:Journal Article
- Keywords:
Quantitative tissue velocity imaging;
Dilated cardiomyopathy;
Left ventricular Function;
Children;
Postsystolic shortening
- From:
Journal of Chongqing Medical University
2003;0(05):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To evaluate the application of Quantitative tissue velocity imaging(QTVI) in assessing the left ventricular (LV) systolic function in Children with dilated cardiomyopathy(DCM).Methods:Fifteen consecutive children with DCM were included in the present study,who were divided into group A(with light heart failure) and group B(with moderate and severe heart failure).Twelve children without any cardiac diseases were as controls.The dynamic tri-plane QTVI images of apical four-chamber,LV two-chamber and LV long-axis views were acquired simultaneously and the myocardial velocity curves in basal and middle segments were analyzed.Results:(1)The peak systolic velocity (Vs)redueed generally in group A and B compared with that in controls,especially in group B(P0.05).(2)There were forty-two segments with the velocity of postsystolie shortening(PSS) more than that of the systole in DCM group,among which thirty segments(71.43%)were from group B,and twelve segrnents(28.57%)from group A. Analyzed with strain,twenty-one segments (50.00%)were actively shortened and eleven segments (26.19%)were paradoxical motion.Conclusion:QTVI can assess LV systolic function accurately in Children with DCM.
