麦氏点
呕吐量大，多为隔夜食物，有酸臭味，呕吐后症状减轻()呕吐物不含隔夜食物，解痉药可缓解梗阻()呕吐物有隔夜食物、不臭，伴贫血、消瘦() ["A．瘢痕性幽门梗阻","B．活动性溃疡致幽门痉挛水肿","C．胃癌致幽门梗阻","D．高位肠梗阻","E．低位肠梗阻"]
阑尾炎穿孔()绞窄性肠梗阻() ["A．腹穿抽出血性渗液，恶臭味","B．腹穿抽出脓液","C．腹穿抽出胆汁","D．腹穿抽出粪样液","E．腹穿抽出血液"]
肠绞窄()肠麻痹() ["A．呕吐血性液","B．呕吐食物","C．呕吐粪性液","D．溢出样呕吐","E．呕吐胆汁"]
呕吐早，次数频繁()有少量排气排便()肠鸣音消失() ["A．绞窄性肠梗阻","B．高位性肠梗阻","C．完全性肠梗阻","D．不完全性肠梗阻","E．麻痹性肠梗阻"]
右半结肠癌典型症状()左半结肠癌早期症状()
