(3) ductuli epididymis with least and pilus on the epidermis and (4) circular ductus epididymidis with least cutaway.

③附睾小管：管径最小，上皮有纤毛；④附睾管：切面最少，管腔圆整。

Objective:To evaluate the effects of the anesthesia method used during the operation of Patent ductus arteriosis(PDA)through cardic catheter without thoracotomy.

评价小儿经皮管管封堵术的麻醉方法及效果。

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

24%的胎存在生理性三尖瓣返流,肺阻力普,胎管血流单向自肺流向降主,显色明亮。