Prudent use of choledochoscopy

1. Patients with short postoperative time and no firm sinuses formed around the biliary drainage tube.
2. Cirrhotic ascites and obvious hypoproteinemia.
3. Patients with obvious coagulation dysfunction.
4. Patients with severe cardiopulmonary insufficiency.
5. Long-term use of hormones.
6. Severe diabetes.
7. Severe malnutrition.