The Child-Pugh score is a widely used clinical tool for estimating the severity and prognosis of chronic liver disease, especially cirrhosis. This childs pugh calculator helps you quickly convert five standard clinical variables into a total score and class (A, B, or C).
What is the Child-Pugh score?
The Child-Pugh classification combines lab values and bedside findings into a 5-factor score. It was originally designed to predict surgical risk in patients with portal hypertension and has evolved into a common way to stage liver dysfunction. In practice, clinicians often use it alongside MELD-based tools, imaging, and overall patient context.
Child-Pugh criteria and point system
Each category receives 1, 2, or 3 points, then all points are summed for a total score between 5 and 15.
| Parameter | 1 point | 2 points | 3 points |
|---|---|---|---|
| Total bilirubin (mg/dL) | < 2 | 2–3 | > 3 |
| Serum albumin (g/dL) | > 3.5 | 2.8–3.5 | < 2.8 |
| INR | < 1.7 | 1.7–2.3 | > 2.3 |
| Ascites | None | Mild / controlled | Moderate-severe / refractory |
| Hepatic encephalopathy | None | Grade I–II | Grade III–IV |
Child-Pugh classes
- Class A: 5–6 points (least severe hepatic impairment)
- Class B: 7–9 points (moderate hepatic impairment)
- Class C: 10–15 points (most severe hepatic impairment)
How to use this childs pugh calculator correctly
- Use recent, reliable lab values for bilirubin, albumin, and INR.
- Choose ascites and encephalopathy categories based on current clinical status, not historic episodes only.
- If the patient is receiving treatment (e.g., diuretics, lactulose), classify based on the present level of control and severity.
- Interpret the result in context with diagnosis, comorbid disease, and trend over time.
Clinical interpretation and use cases
Clinicians may use Child-Pugh class for prognosis discussions, risk stratification, treatment planning, and research grouping. It is commonly referenced when considering outcomes in decompensated cirrhosis and may appear in medication labeling for hepatic dose adjustment categories.
Typical prognosis ranges (historical estimates)
- Class A: generally favorable short-term prognosis.
- Class B: intermediate risk, often requiring closer follow-up and management.
- Class C: advanced liver dysfunction with significantly increased risk of complications.
Limitations of Child-Pugh scoring
Even though the score is practical and familiar, it has limitations:
- Two variables (ascites and encephalopathy) can be somewhat subjective.
- Single-time measurements do not capture full disease trajectory.
- It does not directly include kidney function, which is often crucial in cirrhosis outcomes.
- Many decisions now incorporate MELD/MELD-Na and additional clinical indicators.
FAQ
Is this the same as MELD?
No. MELD and Child-Pugh are different scoring systems. MELD emphasizes objective lab values and is central to transplant prioritization in many regions, while Child-Pugh remains useful for broad severity staging and historical comparison.
Can I use this calculator for self-diagnosis?
No. A liver disease diagnosis and severity assessment should be performed by a qualified clinician. Incorrect interpretation can be unsafe.
What if I only know PT prolongation but not INR?
This version uses INR for simplicity. If your facility reports PT prolongation instead, use a source that supports that method directly or convert via local lab standards under clinical supervision.
Bottom line
This childs pugh calculator provides a fast way to estimate Child-Pugh score and class using standard cirrhosis parameters. It is best used as a structured aid in clinical reasoning—not a standalone decision-maker. Always pair score results with full medical evaluation.