The Risk of Surgery in Cirrhosis & Other Liver Disorders

Comprehensive Summary: "The Risk of Surgery in Cirrhosis & Other Liver Disorders"

Lecturer: Prof. Adrian Reuben, Emeritus Professor of Medicine, Medical University of South Carolina

Platform: INIS International Lecture Series

1. Main Clinical Topics Discussed

• Perioperative risk assessment in patients with cirrhosis and other liver disorders
• Scoring systems and clinical tools for predicting surgical mortality in liver disease
• Non-cirrhotic liver conditions that contraindicate elective surgery
• Intraoperative discovery of unrecognized cirrhosis
• Hepatic hemodynamic assessment (HVPG and liver stiffness measurement)

2. Key Learning Points, Guidelines, and Recommendations

Contraindications to Surgery

• Acute hepatitis and acute liver failure represent high-risk or absolute contraindications to elective surgery
• Alcoholic hepatitis carries near-prohibitive operative mortality, even when in apparent clinical remission; paradoxically, in selected specialized centers, it has become an indication for liver transplantation
• Surgical risk in drug-induced liver injury (DILI) and autoimmune liver disease remains largely unstudied and is severity-dependent
• Miscellaneous conditions (Wilson disease, acute fatty liver of pregnancy, hemochromatosis, hepatic steatosis) carry additional disease-specific surgical hazards:

- Wilson disease: penicillamine-induced impaired wound healing; risk of neuropsychiatric exacerbation perioperatively

- Acute fatty liver of pregnancy: rare indication for transplantation

Core Principle

• For advanced cirrhosis or acute liver failure, liver transplantation is the only feasible definitive "surgical" intervention

Preoperative Assessment Framework

• If cirrhosis is known preoperatively: formal risk assessment, optimize liver function, consider timing and necessity of surgery
• If cirrhosis is suspected preoperatively: investigate and confirm/refute before proceeding
• If cirrhosis is discovered intraoperatively: rapid bedside assessment using available parameters (bilirubin, albumin, presence of ascites, PT/INR) to determine whether to proceed

3. Specific Clinical Data, Statistics, and Study Results Cited

Scoring Systems and Their Evolution

• Child-Turcotte Classification (1964): Originally developed to assess risk of portosystemic shunt surgery for variceal bleeding
• Child-Turcotte-Pugh (CTP) Score (1973): Modified at King's College Hospital; widely used for hepatic reserve assessment
• MELD Score (2000, Mayo Clinic): Initially developed to predict outcomes post-TIPS; applied to general cirrhosis survival in 2001; adopted by UNOS for liver allocation in 2002
• MELD-Na (2016): Hyponatremia incorporated into allocation criteria after studies demonstrated that severity of hyponatremia independently predicts adverse outcomes
• Mayo Postoperative Mortality Risk Score: Incorporates age, ASA class, bilirubin; predicts mortality at 7, 30, 90 days, 1 year, and 5 years

- Important limitation: Predictive accuracy has declined progressively from 2008 to more recent cohorts, reducing its clinical utility

• VOCAL-Penn Score (Nadim et al., Philadelphia): Incorporates MELD, MELD-Na, BMI, emergency status, and surgery type

- Validated as superior to MELD, MELD-Na, and the Mayo score in predicting perioperative mortality (demonstrated by higher AUC on validation)

- Limitation: Derived from a VA population (predominantly male, lower socioeconomic status)

Hepatic Venous Pressure Gradient (HVPG)

• Normal HVPG: 3–5 mmHg (threshold for clinically significant portal hypertension: ≥6 mmHg)
• Example case cited: FHVP 10 mmHg, WHVP 40 mmHg → HVPG of 30 mmHg (severely elevated)
• Clinically significant portal hypertension (HVPG ≥10–12 mmHg) markedly increases surgical risk

Liver Stiffness