Common bile duct stone cholangitis is a potentially fatal condition, characterized by an obstruction and bacterial infection of biliary system. The principles of management are appropriate biliary drainage and systemic antibiotics. There has been limited data about appropriate time of antibiotics in patient with successful endoscopic drainage.

The aim is comparing the efficacy and safety between short duration and standard fourteen days antibiotic treatment in patients with acute common bile duct stone (CBDS) cholangitis after successful endoscopic biliary drainage as regards recurrence rate of acute cholangitis, complete stone clearance rate, morbidity and mortality associated acute cholangitis, and complications related ERCP procedure.

The study will be divided patients with acute CBDS cholangitis with complete stone clearance into 2 groups, group (A) will be received intravenous antibiotic until the temperature is less than 37.8 c for 72 hours and group (B) will be received intravenous antibiotic for 7 days, followed by oral antibiotic for 7 days, regardless of the body temperature.

Inclusion Criteria:

• age ≥ 18 years old
• diagnosis of acute mild to moderate severity of ascending common bile duct stone cholangitis
• endoscopic retrograde cholangiopancreatography (ERCP) with biliary drainage within 72 hours after admission

Exclusion Criteria:

• pregnant woman
• the cause of obstruction other than common bile duct stone
• severe co-morbid diseases such as cardiovascular/pulmonary/kidney disease
• active concomitant infections of other organs
• history of allergy to cephalosporin group

The individual data of patients participating in the study are not available for public sharing since the investigators did not obtain the consent to share the data of patient