What does NPO stand for in medical terms?

NPO is a Latin abbreviation that stands for "Nil Per Os," which translates to "nothing by mouth." This term is commonly used in medical settings to indicate that a patient should not consume any food or liquid orally for a specific period of time, often prior to surgery, diagnostic tests, or certain medical treatments. The reason behind this directive is to prevent any potential complications or risks, such as aspiration, that may arise from having food or fluids in the stomach during these procedures.

The definition of NPO is crucial for patient safety and effective medical care. Understanding and adhering to NPO protocols helps ensure that patients are adequately prepared for treatments without unnecessary risks.