Assessment of the Severity of Eccentric Mitrai Regurgitation by Color Doppler Flow Convergence
- VernacularTitle:彩色多普勒血流会聚法评估偏心性二尖瓣返流的临床价值
- Author:
Zhian LI
;
Jian LIU
;
Xinfang WANG
- Publication Type:Journal Article
- Keywords:
color Doppler flow imaging flow convergence region eccentric mitral regurgitation
- From:
Chinese Journal of Ultrasonography
1995;4(5):198-201
- CountryChina
- Language:Chinese
-
Abstract:
The shape of regurgitant jets in 30 patients with eccentric mitral regurgitaltoll Showing flow convergence region(FCR)was observed.It was found that the shapes of the jets were allslender and close to left atrial wall.In comparison of the regurgitant volume calculated by pulsed Doppler and regurgitant flow rate by flow convergence with the regurgitant jet area and the ratio 0f the regurgitant area to left atrial area respectively,the results showed that there were poor correlations between them (r=0.59,0.56 and r=0.55,0.57)and good correlation between regurgitant volume determined by Pulsed Doppler and regurgitant flow rate by flow convergence(r=0. 96,P<0.01).When the regurgitant flow rates calculated by flow convergence were same,the regurgitartt jet area and the ratio of the regurgitant jet area to left atrial area of non-eccentric mitral regurgitation were obviously larger than those of eccentric mitral regurgitation.The results indicated that the regurgitant jet area and the ratio of the regurgitant jet area to left atrial area underestimated the severity of eccentric mitral regurgitation apparently and that flow convergence region could be used to assess the seVerItY 0f eccentric mitral regurgitation accurately.
