Practice Patterns and Outcomes of Patients with Retained Gastric Food Content Encountered during Endoscopy.

Abstract

Retained gastric food content encountered during upper endoscopy may reduce diagnostic accuracy and increase the risk of aspiration. To evaluate endoscopists' practice patterns and clinical outcomes in patients with retained gastric food content encountered during endoscopy. Consecutive patients with retained gastric food content during first-time endoscopy at Loma Linda University Health (1/2016-3/2021) were identified. Primary endpoints were complete examination (deep duodenal intubation) and 30-day post-procedural respiratory adverse events. Of 17,868 patients undergoing endoscopy, 629 (3.5%) (mean age 55+17 years) met inclusion criteria. Moderate sedation was used in 506 (80.4%), anesthesiologist-assisted sedation in 16 (2.5%), and general anesthesia in 107 (17.0%) patients. 534 (84.9%) patients received complete examination, and endoscopist-specific completion rates varied by quintile among 26 endoscopists (range 70.3-98.0%, P<0.0001). Large food gastric content decreased (AOR=0.3, 95%CI 0.2-0.4) while obtaining mucosal biopsies increased (AOR=2.5, 95%CI 1.4-4.7) the likelihood of complete examination after adjusting for endoscopist-specific completion rates. Subsequently, 58 (9.2%) patients required repeat endoscopy within 30 days. During follow-up, 41 (6.5%) patients developed respiratory adverse events including 21 (3.3%) requiring ventilatory support. Hospitalized patients (AOR=37.8, 95%CI 4.9-289.0) compared to outpatients and large compared to small gastric food content (AOR=2.1, 95%CI 1.1-4.2) increased the likelihood of respiratory adverse events. Although deep duodenal intubation was achieved in most patients receiving endoscopy, the rate of complete examination varied among individual endoscopists and the extent of food burden. Respiratory adverse events occurred almost exclusively in hospitalized patients and were associated with high morbidity including half developing respiratory failure.