方法：对2 0例贲门失弛缓症患者行球囊扩张术。
Methods:Twenty patients with achalasia of cardia were given ballon dilation.
随机选取对照组6只白兔另一侧未行球囊损伤侧的髂总动脉做为正常组。
Common iliac arteries in the health side of 6 rabbits randomly selected in the control group were used as normal controls.
目的：通过对不明原因小肠疾病患者行双球囊推进式电子小肠镜检查，评价其操作性能及安全性以及护理要点。
Objective To evaluate the operational performance, safety and feature of nursing care of double-balloon push-type entero scopy in patients with unexplained small bowel diseases.
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