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目前,尚无直接证据表明人胃在排出固、液混合餐时存在筛过与倾析机制。作者应用实时超声观察人胃分开排空液体和固体时,胃出口处形态和胃壁的运动变化,籍以研究胃内容物流动和排空的机制。 病人和方法:6例健康志愿者(男4,女2,年龄20～35岁,平均25岁),检查前禁食8小时,试餐为500ml鸡汤与豆粒的混合物。饮前用超声测量豆粒的最大径。受试者取坐位,以肠系膜上静脉和腹主动脉为标志,横切扫查测量胃窦运动情况,纵切扫查幽门和
At present, there is no direct evidence that the human stomach has a mechanism of sieving and decanting when excreting solid and liquid meals. The authors applied real-time ultrasound to observe the changes in the morphology of the stomach outlet and the movement of the stomach wall when the human stomach was drained of liquids and solids separately, to study the mechanism of gastric contents flow and emptying. Patients and Methods: Six healthy volunteers (male 4, female 2, aged 20-35, average 25 years old) were fasted for 8 hours before the test. The test meal was a mixture of 500 ml chicken broth and bean curd. Measure the maximum diameter of legumes with ultrasound before drinking. Subjects take seats to the superior mesenteric vein and abdominal aorta as a sign, cross-scan to measure the movement of the antrum, longitudinal scanning pylorus and