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[Effect of partial transection of the stomach on antral motor function].

To elucidate the antral motor function after partial-transection, the author investigated the electromyographic change of the antrum before and after 1/3, 1/2, 2/3 partial-transection from the greater curvature or the lesser curvature at the lower third or the middle of the stomach. The results were summarized as follows: 1. Over 1/2 of partial-transection from the lesser curvature or over 1/3 of partial-transection from the greater curvature at the lower third of the stomach, the remarkable prolongation of discharge intervals, the remarkable acceleration of propagation velocity and an appearance of antiperistaltic discharges were noted. 2. After 2/3 of partial-transection from the lesser curvature or over 1/2 of partial-transection from the greater curvature at the middle of the stomach, the slight prolongation of discharge intervals and the slight acceleration of propagation velocity were noted, however, an appearance of antiperistaltic discharges was recognized on the latter alone. The above results suggested that the partial-transection at the lower third of the stomach rather than at the middle of the stomach or from the greater curvature rather than from the lesser curvature might effect on the antral motor function.