[Ultrasonic study of gastric emptying of various oral rehydration solutions]

Gastric emptying of 4 different oral rehydration solutions was investigated by ultrasound in 7 healthy volunteers in a randomized double-blind study. The final gastric emptying times were 32.9 +/- 4.72 minutes for the glycine solution, 55.1 +/- 9.85 minutes for the glucose (WHO) solution. 60.8 +/- 11.58 minutes for the polycose solution and 58.6 +/- 10.12 minutes for the rice-flour solution (p less than 0.05). Gastric emptying times showed considerable person-to-person variability. Based on identical gallbladder volumes before and 60 minutes after ingestion of the rehydration solutions, there was no indication of cholecystokinin stimulation by any of the solutions tested.