ObjectiveTo evaluate the surgical therapy for bleeding gastroesophageal varix.Method108 cases of portal hypertension were treated by pericardial devascularization plus submucous varix transligation in the gastric fundus.Postoperative follow-up was made in 90 cases.ResultPostoperative mortality was 7.4% (8 cases), and 9 cases died of rebleeding during the followed-up of 3 years.The rebleeding rate was 21%. The mortality rate of emergent operation was greater than elective surgery.ConclusionThe surgical procedure is satisfactory in the management of bleeding varix especially on elective basis, when the protocol is strictly observed.

Objective A surface feedback-stimulation gastric-pacing device was designed to extract gastric surface information,determine the status of gastric and surface stimulation.Methods The characteristic parameters of gastric electrical formed by processing signal and extracting parameter.By that,the state of stomach could be confirmed,and stimulus signal of stomach pace-making in different frequency and intensity could be decided as needed.During the processes of the stimulation,the variations of gastric electrical parameters can be analyzed in real-time and the stimulation parameters could be modified to achieve the self-feedback mode.Results Self-feedback model in different gastric motility analog environment could be realized.Conclusion The preliminary validation of experimental results proved the effectiveness of self-feedback of gastric pacing devices and its application prospects in some areas.