Child-Pugh Score in Decompensated Chronic Liver Disease

Primary Clinical Significance

The American Association for the Study of Liver Diseases recommends that the Child-Pugh score be used to stratify patients into three prognostic classes based on five parameters, with Class A (5-6 points) indicating compensated cirrhosis, Class B (7-9 points) indicating decompensated cirrhosis, and Class C (10-15 points) indicating severely decompensated cirrhosis 1, 2, 3, 4
Patients with Child-Pugh Class B have a 7-year survival of 68%, while those with Class C have a 7-year survival of only 25% 5
The Child-Pugh score is essential for classifying liver disease severity and predicting survival, with decompensated disease indicating significantly reduced survival compared to compensated cirrhosis 1, 2

The Child-Pugh score incorporates five variables, each scored 1-3 points, including bilirubin, albumin, INR/PT, ascites, and encephalopathy, with higher scores indicating more severe disease 3, 4, 6, 7
The American College of Cardiology recommends using the Child-Pugh score to guide medication dosing and anticoagulation decisions in patients with liver disease 6, 7

The presence of ascites is a decompensating event that carries specific prognostic weight, with ascites occurring in 30-40% of compensated patients 1, 2
The National Comprehensive Cancer Network recommends using the Child-Pugh score to guide transplant evaluation and surgical candidacy decisions 3, 4, 8

The Child-Pugh score should be used to guide management decisions, including surgical candidacy, transplant evaluation, and medication dosing 3, 4, 8
Child-Pugh B/C patients require immediate transplant evaluation, as these classes indicate decompensated disease with poor prognosis 3, 4

The Child-Pugh score offers practical bedside utility, with simple calculation requiring only routine laboratory values and clinical assessment 3, 4
However, the score has limitations, including not assessing clinically significant portal hypertension and introducing variability with subjective components 1, 2, 3, 4

The National Comprehensive Cancer Network recommends that the Child-Pugh score be determined for patients with metastatic liver disease, as it is a fundamental assessment of hepatic functional reserve that guides treatment decisions and predicts outcomes, regardless of whether the liver pathology is primary or metastatic 9
The Child-Pugh score assesses hepatic functional reserve by evaluating five parameters (bilirubin, albumin, INR/PT, ascites, and encephalopathy) that reflect liver function independent of the etiology of liver disease 9

The American College of Surgeons and the National Comprehensive Cancer Network suggest that the Child-Pugh score determines eligibility for hepatic resection of metastases, with only Child-Pugh Class A patients (and highly selected Class B patients with normal liver function tests and no portal hypertension) being candidates for surgery 10
The Child-Pugh score guides dosing adjustments for chemotherapy and targeted agents in patients with hepatic impairment from any cause, including metastatic infiltration, according to the National Comprehensive Cancer Network 10

The National Comprehensive Cancer Network recommends evaluating for clinically significant portal hypertension (esophagogastric varices, splenomegaly, thrombocytopenia, abdominal collaterals), as this is not captured by the Child-Pugh score but critically impacts surgical risk and prognosis 9
For patients being considered for liver-directed therapies (resection, ablation, SBRT), the National Comprehensive Cancer Network suggests calculating the future liver remnant ratio (FLR/total liver volume), which should be ≥20% in patients with normal liver function 10