Table 4 Predictive factors and risk classes for choledocholithiasis
Predictive factor for choledocholithiasis | |
Very strong | Evidence of common bile duct stone at abdominal ultrasound |
Strong | Common Bile duct diameter > 6 mm (with gallbladder in situ) |
Total Serum Bilirubin > 4 mg/dL | |
Bilirubin level 1.8 to 4 mg/dL | |
Moderate | Abnormal liver biochemical test other than bilirubin |
Age older than 55 years | |
Clinical gallstone pancreatitis | |
Risk class for choledocholithiasis | |
High | Presence of any VERY STRONG |
Low | No predictors present |
Intermediate | All other patients |