01/12/2026
However, patients are not always required to fast before a medical procedure, as research has found evidence to support more moderate requirements compared to traditional guidelines.
Fasting for a set period of time before an operation, also known as “nothing by mouth” or NPO, is a requirement to prevent patients from aspirating stomach contents during surgery.1 When under anesthesia, patients’ gag and cough reflexes are suppressed, preventing them from vomiting normally. ...