AN ELECTROMYOGRHIC STUDY OF THE STOMACH AFTER SELECTIVE PROXIMAL VAGOTOMY IN DOGS

To clarify the gastric motor function after selective proximal vagotomy (SPV) by electromygoraphy in dogs, I designed the following experimental groups; Group I is the control, untreated dogs; Group II is SPV operated dogs; Group III is selective antral vagotomy (SAV) operated dogs.The gastric electromygoram was taken from fasted food stimulated, and insulin stimulated dogs in each groups, and the recording was begun two weeks after theoperation.The results are summarized as follows.1) The were no significant differences in discharge intervals before and after food and insulin stimulation in all groups.2) The propagation velocity was delayed markedly in SPV- and SAV-operated dogs compared to the untreated dogs before stimulation.3) It seemed to be that the delay of propagation velocity at fasting, was more prominent in SAV than in SPV.Therefore, it is suggested that antral branch might play an important role on the gastric motor function.