[Gastric emptying in children. II. Influence of the osmolarity of the hydration solution for oral use].

The gastric retention of three oral rehydration solutions whose osmolality was changed by means of varying glucose concentration (mean values: 224, 312 and 422 mOsm/kg) was studied in 12 children (6 low birthweight infants and 6 infants). The children were fed by a nasogastric tube. The 422 mOsm/k solution caused slower gastric emptying than the 224 mOsm/kg solution. Thus, the use of an oral rehydration solution with osmolality varying between 200-300 mOsm/kg is recommended.