Study on right ventricular dyssynchrony in patients with pulmonary hypertension using strain imaging
10.3760/cma.j.issn.1004-4477.2009.12.010
- VernacularTitle:应变成像技术对肺动脉高压患者右心室非同步运动的研究
- Author:
Yanfei ZHANG
;
Yueheng WANG
;
Xiaoxue CHEN
;
Xiaoling ZHANG
;
Yingjie PU
;
Minzhi LI
- Publication Type:Journal Article
- Keywords:
Echocardiography;
Hypertension,pulmonary;
Ventricular function,right;
Strain imaging
- From:
Chinese Journal of Ultrasonography
2009;18(12):1043-1045
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate right ventricular(RV) dyssynchrony in patients with pulmonary hypertension(PH)by strain imaging.Methods Sixty PH patients were divided into three groups according to the pulmonary artery systolic pressure(PASP),20 healthy volunteers served as control group.RV structures parameters included RV end-diastolic area(RVEDA),end-systolic area(RVESA),the ratio of RV diameter and LV diameter(RVTD/LVTD).RV function parameters included RV fractional area change (RVFAC)and Tei index.RV strain parameters included the maxmal differences of the peak systolic strain(Max-ΔPST)and the maxmal differences of the time to peak systolic strain(Max-ΔT_(Q-S))of each segment.Results Compared with control group, Max-ΔT_(Q-S) and Max-ΔPST of PH groups were significantly larger (P<0.01).Max-ΔT_(Q-S) had strong correlations with PASP and RV structure and function parameters(P<0.01).Max-ΔPST had good correlations with PASP and Tei-index(P<0.05,P<0.01).Conclusions PH patients exhibit right ventricular dyssynchrony which correlates with right ventricular function and structure parameters.Right ventricular dyssynchrony parameters could evaluate right ventricular function in PH patients early by strain imaging.
