In the medical field, NPO stands for Nil Per Os, which is a Latin term meaning “nothing by mouth.” This instruction is given to patients who are not allowed to consume any food or liquids orally for a certain period. The NPO status is typically required before surgeries, certain medical tests, or procedures to prevent complications such as aspiration, where food or liquid could enter the lungs.
For example, a patient scheduled for surgery might be instructed to be NPO after midnight the night before the procedure. This ensures that their stomach is empty, reducing the risk of vomiting and aspiration during anesthesia.
It’s important for patients to follow NPO instructions carefully to avoid delays or cancellations of their medical procedures. Always consult with your healthcare provider for specific guidelines related to your situation.