Summary: The authors have touched a very important aspect of anesthesia and surgical practice, regarding the period of preoperative fasting for patients who are on enteral feeding. The authors recommend a fasting time between 45 min and 4 h (if the airway is to be manipulated during the procedure), is adequate to perform surgical procedures in patients with enteral tube nutrition. In other patients gastric suctioning before the procedure might be adequate. Key words: Adult; Elective Surgical Procedures; Enteral nutrition; Fasting; Humans; Intensive Care Units; Nutritional Status; Practice Guidelines as Topic; Preoperative Care / methods; Preoperative Period; Critical Illness / therapy; Patient Safety; Risk Management Citation: Useche LSV, Useche CV. How long should the pre-operative fasting time be in patients with enteral tube nutrition? Anaesth. pain intensive care 2022;26(4):576-577; DOI: 10.35975/apic.v26i4.1970__