Preoperative biliary drainage for biliary tract and ampullary carcinomas

Area of Science:

• Gastroenterology
• Surgical Oncology
• Hepatology

Background:

• Preoperative biliary drainage indications are evolving.
• Standard practice for jaundiced patients requires careful consideration of surgical extent and patient condition.
• Extended hepatectomy for biliary cancer carries high risks, necessitating specific preoperative management.

Purpose of the Study:

• To address key clinical questions regarding preoperative biliary drainage.
• To synthesize current evidence on the necessity, methods, and management related to biliary drainage.
• To provide guidance on optimizing patient outcomes in hepatobiliary surgery.

Main Methods:

• Review of existing literature to answer six clinical questions on preoperative biliary drainage.
• Analysis of evidence concerning indications, procedures, and complications.
• Synthesis of findings to inform clinical decision-making.

Main Results:

• Preoperative biliary drainage is generally not required for pancreatoduodenectomy unless cholangitis or liver dysfunction is present.
• For extended hepatectomy, preoperative drainage is recommended to mitigate hepatic failure risk.
• No randomized controlled trials compare drainage methods (PTBD, ENBD/ERBD, surgical); selection should be facility-dependent.
• Unilateral drainage is usually sufficient for malignant hilar obstruction; bilateral may be needed in complex cases.
• Post-drainage fever suggests cholangitis, requiring prompt intervention; bile cultures guide perioperative antibiotics.
• Bile replacement is beneficial for external drainage before extensive surgery to maintain enterohepatic circulation.

Conclusions:

• Preoperative biliary drainage decisions must be individualized based on surgical plan and patient status.
• Effective management of complications like cholangitis and appropriate use of bile cultures are crucial.
• Maintaining bile circulation through replacement is important for patients undergoing major hepatectomy with external drainage.