What does "NPO" stand for in medical terminology?

"NPO" stands for "Nil per os," which is a Latin term that translates to "nothing by mouth." This designation is used in medical settings to instruct that a patient should not take any food or fluids orally for a specified period of time. This can be necessary before certain medical procedures, surgeries, or diagnostic tests to ensure an empty stomach, which reduces the risk of aspiration or complications during anesthesia.

Using "Nil per os" remains essential in patient management, particularly in settings such as preoperative care, where patients must fast for safety reasons. Understanding this term is vital for issues related to patient care, intake assessment, and collaboration with healthcare teams. The other options do not accurately reflect the usage of "NPO" in a medical context, as they pertain to different concepts unrelated to the directive for oral intake.