Final answer:
Normal saline is an emergent volume expander used in medical settings to restore fluid volume in cases of dehydration or hypovolemia. It is typically administered intravenously with an initial dose given at a rate of 20 mL/kg over the first hour.
Step-by-step explanation:
Normal saline, also known as 0.9% sodium chloride solution, is a commonly used emergent volume expander in medical settings. It is typically administered intravenously to restore fluid volume in cases of dehydration or hypovolemia. The initial dose of normal saline depends on the patient's condition and the severity of dehydration, but it is typically given at a rate of 20 mL/kg over the first hour.