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

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. 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 , , , spp., and . 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. 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. 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.