Results Color Doppler echocardiography showed that the embryocardia ductus arterious flow had a bright shunt from the pulmonary to descending aorta.

24%的胎生理性三尖瓣返流,肺动脉阻力普遍较高,胎动脉导管血流单自肺动脉流降主动脉,显色明亮。

Conculsion The level of the abnormal MBF reserve in stenosed coronary artery may be the mainly physiopathologic basis of dipyridamole stress echocardiography in detecting coronary stenosis.

结论狭窄冠脉MBF储备的异常程是双嘧达莫负荷超声评价冠脉狭窄的主要病理生理基础。