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

24%的胎心存在生理性三尖瓣返流,阻力普遍较高,胎心导管血流单自流降主,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.

结冠MBF储备的异常程度可能是双嘧达莫负荷超声评价冠的主要病理生理基础。