Comparison of Gastric Volume After 6-hour and 8-hour Fasting in Patient Scheduled for Elective Surgery

Preoperative fasting was a common practice to decrease perioperative aspiration risk. Duration of fasting was proportional to gastric volume. Short fasting duration may increase aspiration risk. However, prolonged perioperative fasting duration may lead to dehydration and hypoglycemia. The objective of this study was to analyze gastric volume after 6-hour and 8-hour duration of fasting after consumption of solid meal on patients scheduled for elective surgery. This was a cohort study recruiting 37 subjects from January to February 2019. Subjects were patients scheduled for elective non-digestive surgery in Cipto Mangunkusumo Hospital, Jakarta, Indonesia. Before fasting, all subjects consumed standard Cipto Mangunkusumo meal and was later assessed for gastric volume using ultrasound at 6 and 8 hour after meal was consumed.