Although ERCP is generally successful, some complications may arise. These complications may include:

• Pancreatitis: Pancreatitis is one of the most common complications of ERCP. It involves inflammation of the pancreas and can cause symptoms such as pain, nausea, and vomiting.
• Bleeding: Bleeding may occur during or after the procedure due to damage to the bile ducts or pancreas.
• Infection: Infection may develop during or after the use of the endoscope.
• Bile leakage: Bile leakage may occur due to damage to the bile ducts during the use of the endoscope.

When gallbladder surgery is required after ERCP, the surgery itself carries risks. These risks include infection, bleeding, injury to the bile ducts or neighboring organs, bile leakage, and complications related to anesthesia.

However, both procedures are generally successful when performed by an experienced surgeon. Risks can vary depending on factors such as the patient’s overall health, age, accompanying health problems, and the experience of the surgical team.