The electrophysiological activity of the gastrointestinal tract and the mechanical anti-reflux structure of the gastroesophageal junction are the basis of the anti-reflux function of the stomach. Proximal gastrectomy destroys the mechanical structure and normal electrophysiological channels of the anti-reflux. Therefore, the residual gastric function is disordered. Moreover, gastroesophageal reflux is one of the most serious complications. The emergence of various types of anti-reflux surgery through the mechanism of reconstructing mechanical anti-reflux barrier and establishing buffer zone, and the preservation of, the pacing area and vagus nerve of the stomach, the continuity of the jejunal bowel, the original gastroenteric electrophysiological activity of the gastrointestinal tract, and the physiological function of the pyloric sphincter, are all important measures for gastric conservative operations. There are many types of reconstructive approaches after proximal gastrectomy. The design based on the anti-reflux mechanism and the functional reconstruction of mechanical barrier, and the protection of gastrointestinal electrophysiological activities are important considerations for the selected of reconstructive approaches after proximal gastrectomy. In clinical practice, we should consider the principle of individualization and the safety of radical resection of tumor to select a rational reconstructive approaches after proximal gastrectomy.
胃肠电生理活动和胃食管结合部机械性抗反流结构是胃抗反流功能的基础，近端胃切除破坏了抗反流的机械性结构和正常电生理通道，残胃功能发生紊乱，胃食管反流是其中严重的并发症。重建机械性抗反流屏障、建立缓冲带等机制的各种抗反流术式，以及在近端胃切除消化道重建过程中保留胃的起搏区域和迷走神经、保留空肠肠管的连续性、维持胃肠道原有的胃肠电生理活动和幽门括约肌的生理功能，均是胃保功能手术的重要措施。目前，近端胃切除消化道重建术式种类繁多。但基于抗反流机制的设计、机械性屏障功能重建、胃肠电生理活动的保护是近端胃切除消化道重建过程中的重要考量因素。临床实践中，应根据个体化原则，在基于肿瘤根治安全性的前提下，选择合理的近端胃切除消化道重建术式。.