Which pharmacologic approach is included in ASPEN/SCCM guidelines to reduce aspiration risk in critically ill patients?

• A. Use of prokinetic agents or narcotic antagonists
• B. Use of proton pump inhibitors routinely
• C. Frequent measurement of gastric residual volumes
• D. Endotracheal intubation for all patients

Answer: (A)

The main concept is using pharmacologic means to shorten the time gastric contents stay in the stomach, thereby lowering the chance of reflux and aspiration during enteral feeding. Prokinetic agents, such as metoclopramide or erythromycin, speed up gastric emptying. Narcotic antagonists counteract opioid-induced slowing of the gut, which can further reduce residual volume and risk of aspiration. This combination is specifically called out in ASPEN/SCCM guidelines as a way to reduce aspiration risk in critically ill patients.

Other strategies like routinely giving proton pump inhibitors, repeatedly measuring gastric residual volumes, or endotracheal intubation for all patients do not target gastric motility or aspiration risk in the same pharmacologic way, and are not recommended as general aspiration-prevention measures.