When subjected to fluid loss or fluid deficiency irrespective of disease or environmental factors it is discussed how to rehydrate or how to hydrate prophylactic. In medical care it is common to give infusions. However it has increasingly become common to hydrate the patient through the mouth even early after bowel surgery. Moreover it is more simple to provide energy the natural way. Which fluid to give, depends on several factors such as possibility to drink, the volume and emptying of the stomach as well as the fluid absorption in the bowel. The provided fluid can also influence this process depending on temperature, osmolality/tonicity and composition (carbohydrates or salts). In this study we wish to study the speed with which the provided fluid is absorbed by the bowels and how fast the fluid is distributed to the different body compartments depending on it's composition. The three fluids will be either tap water, high sodium chloride and a carbohydrate rich fluid.
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change in hydration
Timeframe: 2.5 hours