Aspiration Pneumonia After ERCP Under Anesthesiologist-Administered Sedation: Prevalence, Risk Factors and Clinical Outcomes of an Underestimated Adverse Event.

Background and

Objectives

Aspiration pneumonia is a well-described complication of upper digestive endoscopy. However, limited data are available on incidence, risk factors and clinical consequences of post-endoscopic retrograde cholangiopancreatography (ERCP) aspiration pneumonia (pEP). Materials and

Methods

All consecutive ERCPs performed under anesthesiologist-administered sedation at the Endoscopy Unit of the University of Verona between 1 April 2022 and 31 August 2024 were retrospectively evaluated. Demographic, clinical and endoscopic data were collected.

Results

One thousand one hundred forty consecutive ERCPs were included. The main indication was malignant biliary stricture, and the patient's mean age was 68 ± 13.9 years. Overall incidence of pEP was 2.7%. The American Society of Anesthesiologists (ASA) score, presence of active cholangitis before ERCP and performance of endoscopic ultrasound (EUS) and ERCP in the same sedation session were significantly associated with a higher risk of pEP at both univariable and multivariable analysis. pEP was an independent risk factor for post-ERCP 30-day mortality and for prolonged hospital stay.

Conclusions

pEP is a relatively frequent adverse event after ERCP. In patients with a high ASA-score, active cholangitis and scheduled EUS and ERCP in the same sedation session, preventive medical and/or anesthesiological strategies might be considered. Additional prospective studies are needed to confirm these data.