Assessment of left ventricular diastolic function after mitral valve replacement using color M-mode Doppler flow propagation velocity
10.3760/cma.j.issn.1004-4477.2009.02.003
- VernacularTitle:彩色血流传播速度对二尖瓣置换术后左心室舒张功能的定量评估
- Author:
Jiawei TIAN
;
Guixia ZHENG
;
Guoqing DU
;
Xiuting FU
;
Chunping NING
- Publication Type:Journal Article
- Keywords:
Echocardiography;
Heart valve prosthesis implantation;
Ventricular function,left
- From:
Chinese Journal of Ultrasonography
2009;18(2):101-104
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the clinical value of color M-mode Doppler echocardiography (CMM) in assessing left ventricular(LV) diastolic function after mitral valve replacement(MVR). Methods Fifty-two patients who had received the implantation for more than three months were examined by echoeardiography (MVR group). Thirty age and sex-adjusted normal volunteers served as control group. Dimensions of left atrium and ventricle,ejection fraction(EF) and mitral inflow velocity(E) were measured by two-dimensional and Doppler eehocardiography. Color M-mode Doppler flow propagation velocity(Vp) and TDl-derived diastolic mitral annular velocity(Em) were measured from the apical four-chamber and two-chamber views. Then two new indexes based on the ratio of E to Vp(E/Vp) and E to Era' (E/Em') were while E/Vp and E/Era' increased, there were significant differences(P <0.01). The correlation coefficient and atrial fibrillation(P <20.01) ,however E/Vp was lower affected hy EF or atrial fibrillation(P >0.05). dysfunction were 2.00. Conclusions CMM is an effective technique to assess LV diastolic function after MVR. E/Vp has good consistency with E/Era and may be a potential useful parameter for assessing LV diastolic function.
