Did not find postoperative bleeding and postoperative perforation cases.
未发现术后出血及术后穿孔病例。
Some prophylactic measures are put for-ward for unexpected postoperative bleeding in upper alimentary tract.
对术后有再发生上消化道出血可能者，提出了有关预防措施。
Improvement of operative technique and peri-operative treatment can reduce the incidence of postoperative bleeding.
提高手术技术，加强围手术期处理，可减少术后出血的发生。
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