Table 1 Classification of clinical risk group according to laboratory and sonographic findings [8]
Risk group | Findings |
|---|---|
High | - Presence of jaundice or cholangitis |
- Acute biliary pancreatitis | |
- Total bilirubin > 1.5 mg/dL | |
- ALP > 220 U/L | |
- CBD stone suspected but not diagnostic at sonography | |
- CBD diameter at sonography > 8 mm | |
Moderate | - Total bilirubin > 1.2 and < 1.5 mg/dL |
- ALP > 110 and < 220 U/L | |
- Status of posibiliary pancreatitis | |
- AST or ALT > 100 U/L | |
Low | - Atypical abdominal pain or biliary colic |
- Previous jaundice | |
- Elevation of AST or ALT ≤ 100 U/L |