Which statement about preoperative clear liquids is accurate?

Which statement about preoperative clear liquids is accurate?

• A. Having a glass of water a few hours before arriving does not usually increase risk for aspiration.
• B. Drinking a full meal is safe.
• C. Fasting is unnecessary.
• D. Coffee with cream is standard preop practice.

Answer: (A)

When preparing for anesthesia, keeping the stomach mostly empty reduces the risk of aspiration if the airway reflexes are temporarily diminished. Clear liquids, like water, empty from the stomach relatively quickly. Therefore, having a glass of water a few hours before arriving typically does not increase the risk for aspiration because the liquid is likely already moved into the small intestine by the time anesthesia is induced, and only a small residual volume would remain. In contrast, a full meal adds solid contents that take much longer to empty, increasing the chance of significant gastric volume at induction. Fasting is still required for solids and non-clear liquids to minimize this risk. Coffee with cream is not standard preoperative practice because the cream adds fat and other non-clear components that slow emptying and can increase gastric contents.

When preparing for anesthesia, keeping the stomach mostly empty reduces the risk of aspiration if the airway reflexes are temporarily diminished. Clear liquids, like water, empty from the stomach relatively quickly. Therefore, having a glass of water a few hours before arriving typically does not increase the risk for aspiration because the liquid is likely already moved into the small intestine by the time anesthesia is induced, and only a small residual volume would remain. In contrast, a full meal adds solid contents that take much longer to empty, increasing the chance of significant gastric volume at induction. Fasting is still required for solids and non-clear liquids to minimize this risk. Coffee with cream is not standard preoperative practice because the cream adds fat and other non-clear components that slow emptying and can increase gastric contents.