[Gastroduodenal motility in chronic dyspepsia. 2. Postprandial motility].

After ingestion of a solid test meal the postprandial motor activity in 17 dyspeptic patients and 12 healthy controls were examined. In all individuals the gastric emptying was measured by scintigraphy. - The antral pressure activity after food intake was delayed in dyspepsia and showed a distinct reduction with time (antral hypomotility). In contrast the postprandial duodenal motility was increased significantly (duodenal hyperdyskinesia). All 6 dyspeptic patients with prolonged gastric emptying had gastroduodenal manometric abnormalities. - Our results suggest that in chronic dyspepsia the interdigestive and postprandial motility is often disturbed. The delayed gastric emptying occurs because of impaired antral peristalsis and/or increase of duodenal resistance.