Aste H, Pandolfo N, Pugliese V, Nebiacolombo C
Scand J Gastroenterol Suppl. 1979;54:72-7.
Functional aspects of the antral-pyloric segment were evaluated in 30 patients without gastroduodenal disorders by means of prolonged endoscopic observations. Patients were examined in standardized conditions. Pressure measurements of the antrum, pylorus and duodenal bulb were assessed by means of water-perfused polyvinyl tubes in 7 patients of the same group a few days after the endoscopy. The pylorus appeared open in above 80% of the total endoscopic observation time. Pyloric closure was observed only for few seconds at the end of 30-40% of antral peristaltic waves. The antrum and pylorus appeared to contract in sequence. Antral peristaltic waves moved at a mean rate of 2.4 per minute and duodenal reflux was observed at a mean rate of 0.96 per minute usually in the form of bubbles. The manometric measurements by means of pull through in 7 patients and immediately after by means of prolonged registration carried out in a fixed position in 4 patients failed to show a high pressure zone in the gastroduodenal junction. In some cases it was possible to observe a peculiar phasic activity in the pyloric tract. The endoscopic and manometric observations suggest that human pylorus does not act as a true physiological sphincter. These findings confirm the functional aspects described by radiology and manometry in other studies. In this way, endoscopy appears to be a useful procedure to evaluate some functional aspect of the gastroduodenal tract.
通过延长内镜观察，对30例无胃十二指肠疾病的患者的胃窦 - 幽门段功能进行了评估。患者在标准化条件下接受检查。在同一组的7例患者内镜检查几天后，通过水灌注聚乙烯管评估胃窦、幽门和十二指肠球部的压力测量。在总内镜观察时间的80%以上，幽门呈开放状态。仅在30 - 40%的胃窦蠕动波末期观察到幽门关闭持续几秒钟。胃窦和幽门似乎依次收缩。胃窦蠕动波平均每分钟移动2.4次，十二指肠反流通常以气泡形式平均每分钟出现0.96次。7例患者通过牵拉法进行的测压测量以及4例患者在固定位置立即进行的延长记录法测压测量均未显示胃十二指肠交界处存在高压区。在某些情况下，可以观察到幽门段有特殊的阶段性活动。内镜和测压观察表明，人类幽门并非真正起生理括约肌的作用。这些发现证实了其他研究中放射学和测压所描述的功能方面。通过这种方式，内镜检查似乎是评估胃十二指肠 tract某些功能方面的有用方法。
