Experience of injection noradrenalin through endoscopic nasal bile duct for hemorrhage of upper digestive tract after papillary muscles lithotomy incision (report of 2 cases)

• 经鼻胆管去甲肾上腺素盐水注入治疗内镜下乳头肌切开取石术后上消化道大出血的体会(附2例报告)