Nil per os after midnight: history of preoperative fasting
Abstract
Preoperative fasting is a measure designed to reduce the risk of pulmonary aspiration of gastric contents during anesthesia. The indications for fasting have changed over history from encouraging the intake of clear fluids to a popular indication of “nothing by mouth” which seems to be independent of the time of surgical procedure. There are ritualistic behaviors among healthcare staff which challenge the indications of the guidelines and may be detrimental to patient wellbeing. Hence, several groups have currently developed guidelines and protocols intended to reduce the time of preoperative fasting, improving the experience and accelerating total postoperative recovery.
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