What does "NPO" stand for in medical terms?

"NPO" in medical terminology stands for "Nothing by mouth." This term is commonly used to indicate that a patient should not consume any food or liquids for a specified period, often prior to surgical procedures or certain medical tests. The reason for this restriction is primarily to prevent complications, such as aspiration, which can occur if a patient ingests food or liquids before anesthesia or certain examinations. It is a crucial concept in patient care, ensuring that the patient's safety and health are prioritized during medical interventions.