Prospective evaluation of the risk of bacteremia and the role of antibiotics in ERCP.

To determine the frequency of bacteremia associated with endoscopic retrograde cholangiopancreatography (ERCP), we obtained blood cultures before, during, and after ERCP in 51 consecutive patients. Patients with radiographically demonstrated abnormalities in pancreatic and/or biliary ducts were routinely given antibiotic therapy after ERCP. Bacteremia after successful cannulation of the papilla of Vater was observed in only one patient with multiple strictures of the main pancreatic duct. No episodes of acute febrile illness was observed in any patient during the 48-hour follow-up period after ERCP. Our observations suggest that the risk of bacteremia from ERCP is minimal, and that any possibility of sepsis after ERCP in patients with abnormal pancreatic or biliary ducts may be prevented by administering appropriate antibiotics after the procedure.