What does the medical abbreviation NPO stand for?

Answer

The abbreviation NPO is derived from the Latin phrase 'nil per os', which translates directly to 'nothing by mouth'. In a medical or healthcare setting, this instruction is used to indicate that a patient should not consume any food, fluids, or oral medications for a specific period of time. This is commonly required before surgical procedures to prevent aspiration under anesthesia, or during certain illnesses to allow the gastrointestinal tract to rest.