What is the purpose of administering D5W in treatment?

Administering D5W, which is a 5% dextrose in water solution, primarily serves the purpose of calorie replacement. D5W provides a source of sugar (dextrose), which can be metabolized by the body for energy. This can be particularly important in situations where a patient is unable to consume food or has increased caloric needs due to illness or other medical conditions.

While D5W does provide some hydration, its primary role is not directly linked to rehydration but rather to offer an energy source. It does not contain any significant electrolytes, which makes it less effective for restoring electrolyte balance, and it is not typically used as a first-line treatment for shock, which would usually require more specialized fluids or medications to manage blood pressure and improve perfusion.

Thus, the key function of administering D5W is to ensure that patients receive necessary calories, especially when they may not be able to take in oral nutrition.