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

24%的胎心理性三尖瓣返流,肺动脉阻力普遍较高,胎心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储备的异常能是双嘧达莫负荷超声评价冠脉狭窄的主要病理理基础。