GLP-1 RAs and Gastric Emptying: Assessing Preoperative Aspiration Risk
Background
Glucagon-Like Peptide-1 Receptor Agonists (GLP-1 RAs) are increasingly prescribed for conditions like type 2 diabetes and morbid obesity, known for their efficacy in weight management and glycemic control. A common side effect of these medications is delayed gastric emptying, which can lead to a significant risk of aspiration (inhaling stomach contents into the lungs) during anesthesia. This study aims to address the critical knowledge gap regarding whether patients taking GLP-1 RAs have increased residual gastric contents when following standard preoperative fasting guidelines, potentially necessitating updated clinical protocols for surgical patients.
Results
As this is a study protocol, specific findings are not yet available, but the study aims to quantify the impact of GLP-1 RAs on gastric emptying. Researchers will measure key parameters such as residual gastric volume and the presence of solid food in the stomach after standard preoperative fasting. The primary objective is to determine if patients on GLP-1 RAs exhibit significantly higher gastric volumes or a greater incidence of solid gastric contents compared to patients not on these medications or historical controls following the same fasting protocols. This data will provide crucial insights into the physiological effects of GLP-1 RAs in a perioperative setting, with the study scheduled to complete by July 2026. The most important finding will be whether GLP-1 RA users, despite following standard preoperative fasting, consistently demonstrate a clinically significant increase in residual gastric contents, indicating a heightened aspiration risk.
Why It Matters
The widespread use of GLP-1 RAs for managing diabetes and obesity makes understanding their perioperative implications critically important for patient safety. This study directly addresses the potential for increased aspiration risk due to delayed gastric emptying in surgical patients. Positive findings could lead to the development of revised, evidence-based preoperative fasting guidelines specifically tailored for individuals on GLP-1 RAs, significantly enhancing patient safety during anesthesia and surgery. This research could inform new clinical protocols, potentially influencing practice across hospitals globally and prompting further studies, including larger Phase II or III trials if initial results warrant.