Final answer:
In a patient's chart, the acronym NS usually refers to Normal Saline, a saline solution comparable to the body's salt concentration used for IV medication administration and hydration.
Step-by-step explanation:
The acronym NS found in a patient's chart typically stands for Normal Saline, which is a common intravenous (IV) solution used in medical settings. Normal Saline is sterile, saltwater solution with a similar salt concentration to that of the human body, making it ideal for a variety of medical purposes. It is commonly used to administer medications, for fluid replacement to combat dehydration, or as a way of diluting other medications administered intravenously.