Scoring
The score employs five clinical measures of liver disease. Each measure is scored 1-3, with 3 indicating most severe derangement.
| Measure | 1 point | 2 points | 3 points |
|---|---|---|---|
| Total bilirubin, μmol/l (mg/dl) | <34 (<2) | 34-50 (2-3) | >50 (>3) |
| Serum albumin, g/l | >35 | 28-35 | <28 |
| PT INR | <1.7 | 1.71-2.30 | > 2.30 |
| Ascites | None | Mild | Moderate to Severe |
| Hepatic encephalopathy | None | Grade I-II (or suppressed with medication) | Grade III-IV (or refractory) |
Different textbooks and publications use different measures. Some older reference works substitute PT prolongation for INR.
In primary sclerosing cholangitis (PSC) and primary biliary cirrhosis (PBC), the bilirubin references are changed to reflect the fact that these diseases feature high conjugated bilirubin levels. The upper limit for 1 point is 68 μmol/l (4 mg/dl) and the upper limit for 2 points is 170 μmol/l (10 mg/dl).
Read more about this topic: Child-Pugh Score