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

24%的存在生理性三尖瓣返流,肺阻力普遍较,导管血流单自肺流降,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MBF储备的异常程度可能是双嘧达莫负荷超声评价冠狭窄的要病理生理基础。