Asa Npo Guidelines 2025. The american society of anesthesiologists (asa) has issued updated 2023 guidelines with recommendations for healthy patients undergoing elective procedures. Rates of prolonged clear fluid fasting (>4 h) prior to surgery are reported in up to 80%.
In the day(s) prior to the procedure: Practice guidelines for preoperative fasting and the use of pharmacologic agents to reduce the risk of pulmonary aspiration: