患者男， 40 岁。因为溃疡穿孔“毕Ⅰ式胃大部切除术” 。现术后 4天，主诉腹部胀痛，恶心，停止排气排便。查体 :全腹膨隆，未见肠型，中上腹轻度压痛及肌紧张，肠鸣音消失。最重要的处理措施是
A、镇痛B
暂无解析
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