The liver serves as the body's largest internal organ, performing crucial functions including filtering blood from the digestive system, processing nutrients and drugs, eliminating toxins, and producing blood proteins. When liver disease develops, these processes become compromised, requiring specialized anesthesia and surgical approaches to manage unique patient risks.

Surgery poses particular challenges for those with liver disease due to alterations in blood circulation and potential intraoperative bleeding. Risk stratification before surgery helps identify specific complications. Certain conditions—including acute liver failure, acute hepatitis, and severe clotting disorders—contraindicate elective procedures. The Child-Turcotte-Pugh and MELD scoring systems help assess surgical risk, with research indicating "every MELD score-point increase above 8 was associated with a 14 percent increase in mortality in the first 30 to 90 days post-operation."

Liver disease typically involves scarring that reduces oxygen delivery, increasing portal venous pressure. Cirrhosis specifically decreases systemic vascular resistance. Anesthetic selection matters significantly—halothane substantially reduces hepatic blood flow, while sevoflurane, desflurane, and isoflurane better preserve it. Propofol maintains hepatic blood flow and remains acceptable for cirrhotic patients.

Medication metabolism becomes problematic with liver disease. Alfentanil's half-life nearly doubles in cirrhosis. Opioids like morphine and muscle relaxants including vecuronium show prolonged effects, necessitating dose adjustments.

Advanced liver disease impairs synthesis of both clotting and anticlotting factors, creating simultaneous bleeding and clotting risks. Thromboelastography helps identify clot characteristics and reduce transfusion requirements.

Post-operatively, cirrhosis patients face hepatic decompensation risks, manifesting as encephalopathy, coagulopathy, ascites, or worsening jaundice. Close renal monitoring is essential. Collaboration between hepatologists, anesthesiologists, and surgeons improves outcomes.