At the end of the emergent phase and the initial acute phase of burn injury, a patient has a serum sodium level of 152 mEq/L (152 mmol/L) and a serum potassium level of 2.8 mEq/L (2.8 mmol/L). What could have caused these imbalances?
a. Free oral water intake
b. Prolonged hydrotherapy
c. Mobilization of fluid and electrolytes in the acute phase
d. Excessive fluid replacement with dextrose in water without potassium supplementation