The economic burden of post-endoscopic retrograde cholangiopancreatography (ERCP) procedure infections in Italy.

Introduction: The infections of multidrug-resistant organisms (MDROs) associated with duodenoscopes during endoscopic retrograde cholangiopancreatography (ERCP) procedure have become a significant cause for concern, especially in fragile patients. While the clinical impacts of these infections are well-documented, their economic implications remain underexplored. This study assesses the incidence and economic burden of post-ERCP infections in Italy using an administrative database.

Methods: We conducted a retrospective observational study using administrative databases from A.O.U. Città della Salute e della Scienza di Torino. The study included all patients who underwent their first inpatient ERCP between 2018 and 2021. Infections were identified using ICD-9-CM codes for Pseudomonas aeruginosa, Clostridium difficile, Escherichia coli, Klebsiella spp., and Staphylococcus aureus. A 1-year follow-up was defined in order to estimate healthcare resource utilization and related costs, including readmissions, drug prescriptions, and outpatient specialist and laboratory services.

Results: The study included 686 inpatient ERCP cases, an overall infection rate of 4.2% was observed. Higher infection rates were observed in women (4.6%), patients over 70 years old (4.6%), emergency admissions (5.1%), and transplant patients (19.1%). The average hospital stay doubled for infected patients (24.3 vs. 11.3 days; p=0.001). Post-ERCP infections led to a 28% increase in average costs (€12,256 vs. €9,561; p=0.048). With an annual volume of 25,000 ERCP procedures, post-ERCP infections in Italy contribute approximately €2.9 million in additional direct costs per year.

Conclusion: Post-ERCP infections impose substantial financial burdens on the healthcare system, underscoring the critical importance of implementing cost-effective prevention strategies to mitigate this public health threat in Italy.