What does the abbreviation "NPO" mean?

The abbreviation "NPO" stands for "Nothing by mouth." This medical term is commonly used to indicate that a patient should not ingest anything orally, including food, drink, or medications. This instruction is essential in various medical situations, particularly before surgical procedures or certain diagnostic tests, where having an empty stomach is necessary for safety and to ensure accurate results.

In the medical setting, adhering to the NPO status can help prevent complications such as aspiration during anesthesia or gastrointestinal issues. The understanding of this term is vital for clinical medical assistants, as they often need to communicate and enforce such instructions to ensure patient safety and adherence to pre-procedural protocols.