Estimation of Shunt Severity of Patent Ductus Arteriosus by Color Doppler Flow Convergence Region
- VernacularTitle:彩色多普勒血流会聚法评估动脉导管未闭分流程度
- Author:
Shumin GAO
;
Zhian LI
;
Xinfang WANG
- Publication Type:Journal Article
- Keywords:
Doppler echocardiography flow convergence patent ductus arteriosus
- From:
Chinese Journal of Ultrasonography
1998;7(1):10-13
- CountryChina
- Language:Chinese
-
Abstract:
The left to right shunt rate(F)and the transverse seetional area of ductus arteriosus(A)were calculated by color Doppler flow convergence method in 20 patients with patent ductus arteriosus.The results indicated that the shunt rate(F)was correlated fairly with Qp-Qs,Qp/Qs(measured by pulsed wave Doppler),the pressure gradient(△P)and the diameter of left ventricle(DLV)(r=0.81,0.62,0.69 and 0.53;P＜0.001,0.005,0.001 and 0.01,respectively).The transverse sectional area of ductus arteriosus(A)was also correlated closely with the diameter of ductus arteriosus(Dd)measured directly in two-dimensional view(r=0.81,P＜0.001).The F value of group Qp/Qs≥2:1 was apparently higher than that of group Qp/Qs＜2:1(P＜0.005).The color Doppler flow convergence method can rapidly and exactly evaluate the left to right shunt severity of patent ductus arteriosus.
