If a T-tube has been placed at the time of a surgical common bile duct exploration, a T-tube cholangiography is performed 24 to 48 hours postoperatively. If the T-tube cholangiogram is normal, the T-tube is clamped for 10 to 14 days and removed. If the T-tube cholangiogram is abnormal, the T-tube is left open, and additional bile duct clearance may be required. A normal T-tube cholangiogram and liver function tests should be ascertained prior to T-tube removal.
