Gastric residual volume by magnetic ressonance after intake of maltodextrin and glutamine: a randomized double-blind, crossover study.

Context: The addition of glutamine in preoperative drinks may enhance the benefits of carbohydrate alone.

Objectives: To evaluate the gastric residual volume after the intake of a beverage containing carbohydrate plus glutamine.

Methods: Eleven healthy volunteers (24-30 years-old) were randomized in a crossover fashion to intake 400 mL (4h before) and 200 mL (2h before) of a beverage containing either 12.