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Medical AI Inquiry: You was designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.  Labels: BACKGROUND, METHODS, RESULTS. Meshes: Administration, Oral, Adult, Analysis of Variance, Beverages, Cross-Over Studies, Dietary Carbohydrates, Electrolytes, Fasting, Female, Gastric Emptying, Healthy Volunteers, Humans, Japan, Magnetic Resonance Imaging, Male, Middle Aged, Osmosis, Rehydration Solutions, Rheology, Time Factors, Young Adult.
user
Does gastric emptying of a carbohydrate-electrolyte solution in healthy volunteers depend on osmotically active particles? Context: Preoperative ingestion of only clear fluids until 2 hours before induction of anesthesia is a common preoperative fasting regimen. Gastric emptying times, however, vary among clear fluids. We therefore investigated the gastric emptying of 2 clear glucose-electrolyte drinks. A 2-way crossover study was performed in 10 healthy volunteers. After fasting, the volunteers drank 500 mL of either OS-1(®), an oral rehydration solution, or Pocari Sweat(®), a popular sports drink, over 3 minutes in a standing position. Magnetic resonance imaging was performed before, immediately after, and 30 minutes after the drinking of each test fluid. The difference in gastric emptying between OS-1(®) and Pocari Sweat(®) was evaluated by comparing gastric fluid volume, flow rate, and residual ratio. We also compared the flow rates of sodium, potassium, carbohydrates, and osmotically active particles in the 2 test fluids. Gastric fluid volume 30 minutes after drinking was significantly smaller for OS-1(®) (76.0 ± 57.0 mL) than for Pocari Sweat(®) (158.1 ± 73.5 mL, p<0.01), although the volumes did not differ before or immediately after drinking. The flow rate was significantly faster for OS-1(®) (10.66 ± 3.34 mL) than for Pocari Sweat(®) (8.68 ± 3.02 mL/min, p<0.05), and the residual ratio was significantly smaller for OS-1(®) (21 ± 14% than for Pocari Sweat(®) (41 ± 19%, p<0.01). The flow rates of sodium, potassium, and glucose differed significantly between OS-1(®) and Pocari Sweat(®), whereas the flow rate of osmotically active particles did not.
assistant
Gastric emptying is significantly faster for OS-1(®) than for Pocari Sweat(®). Final Decision: yes