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In order to study the motor function of the interposed jejunum and the residual stomach following Merendino's operation, three bipolar electrodes were implanted in both the interposed jejunum and the residual stomach using adult mongrel dogs.Three types of surgery;truncal vagotomy (TV), selective proximal vagotomy (SPV) and TV with pyloroplasty (PP) were done in each group of 2 dogs.<BR>In the interposed jejunum, the propagation of the BER was not constantly directed from oral to anal side with phase lead level migration.<BR>In the residual stomach, following TV, the significant reduction of the BER frequency and propagation velocity were noted, and dysrhythmia was observed frequently.<BR>After feeding, however, the BER frequency increased and dysrhythmia was altered to the regular rhythmic pattern, though vomiting episodes were observed frequently.<BR>In the group of TV with PP, the frequency of dysrhythmia was not decreased, but the amount of feeding could be increased.BER frequency and propagation velocity were not changed after feeding.<BR>In the group of SPV, the frequency of dysrhythmia was low, and the propagation velocity was preserved in the normal rate.The vomiting episodes were infrequent.<BR>On pathohistological findings, reflux esophagitis was not observed in all the three types of surgery.<BR>It is concluded that the interposed jejunum protected the esophagus from reflux esophagitis.After TV, PP must be done for the prevention of vomiting episodes.However, after SPV as the residual stomach function is preserved approximately normal, PP can be omited.
- 日本平滑筋学会の論文