摘要
观察３０例显示血流会聚区（ＦＣＲ）的偏心性二尖瓣返流患者的返流束形态，发现均为附壁细长束。返流束面积（ＳＲ）、返流束面积／左房面积（ＳＲ／Ｓ（ＬＡ））与频谱多普勒法及血流会聚法测定的参数进行比较相关性均较差，相关系数分别为０．５９、０．５６及０．５５、０．５７，而血流会聚法所测返流率与频谱多普勒法所测返流量则高度相关，相关系数为０．９６（Ｐ＜０．０１）。血流会聚法所测返流程度相同时，非偏心二尖瓣返流的返流束面积明显大于偏心性二尖瓣返流的返流束面积。结论；①返流束面积以及返流束面积／左房面积明显低估了偏心性二尖瓣返流的严重程度。②血流会聚法能较为准确地评估偏心性二尖瓣返流的严重程度。
The shape of regurgitant jets in 30 patients with eccentric mitral regurgitation showing now convergence region (FCR) was observed. It was found that the shapes of the jets were all slender 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 of 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 regurgitallt flow rate by flow convergence (r=0. 96, P < 0. 01). When the regurgitant now rates calculated by flow converg6nce were same, the regurgitant 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 seventy of eccentric mitral regurgitation apparently and that now convergence region could be used to assess the seventy of eccentric mitral regurgitation accurately.
出处
《中华超声影像学杂志》
CSCD
1995年第5期198-201,共4页
Chinese Journal of Ultrasonography
关键词
偏心性
二尖瓣返流
血流会聚
彩色多普勒
color Doppler flow imaging flow convergence region eccentric mitral regurgitation
