Pulmonary aspiration is a rare but serious complication that can result in 57% mortality and 14% permanent damage. Fasting rules (solid foods 6-8 hours, clear liquids 2 hours) determined by anesthesia associations are applied to prevent pulmonary aspiration by reducing gastric volume. Gastric volume (≥ 0.5 mL/kg) and pH (\<2.5) values are shown to be determinants in the occurrence of pulmonary complications .
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Gastric volume
Timeframe: baseline
Gastric pH measurements
Timeframe: baseline