What does "NPO" stand for in medical terms?

In medical terminology, "NPO" stands for "Nil per os," which is Latin for "nothing by mouth." This abbreviation is used to indicate that a patient should not consume any food or fluids orally. This is particularly important prior to surgical procedures or certain medical tests, as it helps to prevent complications like aspiration during anesthesia or other related issues.

The understanding of NPO is crucial for ensuring patient safety and effective management around surgical procedures. While other interpretations of NPO exist, none are used within a clinical context, making "Nil per os" the widely accepted and correct choice.