Child Pugh Calculator - Liver Cirrhosis Severity Tally

The child pugh score calculator is a bedside liver-disease severity tally that turns five clinical measures into a 5 to 15 total and a class A, B, or C read on cirrhosis severity. Introduced by Child and Turcotte in 1964 and modified by Pugh and colleagues in 1973, the score supports prognosis, pre-operative surgical risk review, and transplant-list conversations.

• • Outpatient cirrhosis prognosis: An outpatient with chronic hepatitis C or alcohol-related cirrhosis who needs a structured read on liver reserve during hepatology review.
• • Pre-operative surgical risk: A surgeon weighing elective abdominal or cardiac surgery in a patient with known chronic liver disease and a recent bilirubin and albumin panel.
• • Transplant-list conversation: A hepatologist pairing the Child Pugh read with the MELD score to discuss transplant timing and the urgency of an outpatient referral.

Each measure is scored 1 to 3 points and the five sub-scores are added to a 5 to 15 total. The calculator adds the sub-scores, returns the class, and surfaces the reference 1-year and 2-year survival so the read stays consistent across providers and across the chart.

When the team wants a separate, objective fibrosis read to pair with the Child Pugh severity tally, APRI Calculator gives the AST-to-platelet ratio hepatologists often run alongside a Child Pugh review.

The calculator sums five 1-3 sub-scores and maps the total to class A, B, or C with reference 1-year and 2-year survival.

• bilirubinPoints (1-3): Total bilirubin: 1 pt <2, 2 pts 2-3, 3 pts >3 mg/dL (PBC/PSC: <4, 4-10, >10).
• albuminPoints (1-3): Serum albumin: 1 pt >3.5, 2 pts 2.8-3.5, 3 pts <2.8 g/dL.
• inrPoints (1-3): Coagulation: INR (<1.7, 1.7-2.3, >2.3) or PT prolongation (<4 s, 4-6 s, >6 s).
• ascitesPoints (1-3): Ascites: 1 pt none, 2 pts mild or controlled, 3 pts moderate to severe or refractory.
• encephalopathyPoints (1-3): West Haven grade: 1 pt none, 2 pts grade I-II, 3 pts grade III-IV.

Either INR or prothrombin time is used, never both. This matters when the patient is on warfarin, where INR reflects the anticoagulant effect and prothrombin time reflects the underlying liver synthesis.

According to Wikipedia (Child-Pugh score), five clinical measures are each scored 1-3, summed to a 5-15 total, and mapped to class A (5-6), B (7-9), or C (10-15) with 1-year survival of about 100, 80, and 45 percent and 2-year survival of about 85, 60, and 35 percent

According to Pugh RN et al., Br J Surg 1973 (PMID 4541913), the modified Child classification scores five clinical measures from 1 to 3, with the total mapped to class A, B, or C for surgical risk assessment in patients with bleeding oesophageal varices

The bilirubin and INR sub-scores sit alongside the transaminase pattern in any cirrhosis workup, and AST/ALT Ratio Calculator gives the complementary enzyme-ratio read the hepatologist usually runs in the same visit.

Four concepts make the Child Pugh tally interpretable at the bedside and across providers.

Two of the five sub-scores depend on a clinical exam, so the same patient can be class A on a quiet morning and class B after a missed lactulose dose. Re-tally at every clinic visit, not just at first diagnosis.

Child Pugh is one of several clinical pretest-probability tallies in everyday use, and 4TS Score shows the same band-based pattern applied to heparin-induced thrombocytopenia.

Five steps take the team from raw labs and exam findings to a class A, B, or C read with reference survival.

1. 1 Pull the latest labs: Open the most recent total bilirubin and serum albumin results. Note the units: bilirubin in mg/dL and albumin in g/dL.
2. 2 Read the INR or prothrombin time: If not on warfarin, use the latest INR. If on warfarin, switch to prothrombin time prolongation in seconds. Use one, not both.
3. 3 Grade ascites and encephalopathy: Score ascites by exam and treatment response. Score encephalopathy by West Haven grade (none, grade I-II, grade III-IV).
4. 4 Pick the matching 1, 2, or 3 for each sub-score: For each measure, pick the highest-matching sub-score from the drop-down. The calculator adds them and reads the total against the 5-6, 7-9, and 10-15 bands.
5. 5 Read the class, survival, and interpretation: Use the class and the reference 1-year and 2-year survival to support the chart note. Pair the read with MELD if the conversation is about transplant prioritisation.

A 58-year-old outpatient with alcohol-related cirrhosis arrives with bilirubin 2.4 mg/dL, albumin 3.0 g/dL, INR 1.9, mild ascites on diuretics, and no clinical encephalopathy. The sub-scores are 2, 2, 2, 2, 1 for a total of 9, placing the case in class B with reference 1-year survival of about 80% and 2-year survival of about 60%. The team optimises the treatable sub-scores.

When the team wants a separate synthesis-side read on the same blood draw, Albumin/Globulin Ratio Calculator helps frame the albumin sub-score in the broader chronic-liver-disease pattern.

The Child Pugh score calculator gives a fast, structured severity read that fits a real clinical workflow.

• • Bedside severity read in under a minute: Once the labs and exam are in hand, the child pugh score calculator fits the five sub-scores on a single screen and the total is ready before the next visit closes.
• • Pre-operative surgical risk flag: Class A is usually safe for elective surgery, class B needs optimisation, and class C is generally a contraindication to major surgery without a transplant conversation.
• • Pairs with MELD for transplant timing: Cholongitas 2005 found MELD a better short-term mortality predictor; Child Pugh remains the bedside severity read. Pairing the two gives a fuller transplant-list conversation.
• • Tracks clinical response between visits: Because ascites and encephalopathy can change between visits, the calculator is useful as a repeated severity read, not a one-off label.
• • Works for PBC and PSC with one tweak: The PBC/PSC modified bilirubin bands (4 and 10 mg/dL) keep the calculator usable for cholestatic disease, where conjugated bilirubin runs higher than in typical cirrhosis.

The benefit is real only when the sub-scores are picked honestly, including the clinical sub-scores. A patient with quiet encephalopathy but a history of asterixis at home still scores 2 on the encephalopathy sub-score.

For a low-cost fibrosis screen that complements the Child Pugh severity read, APRI Calculator is the AST-to-platelet ratio hepatologists pair with a Child Pugh review.

Five factors determine the result, and two caveats matter when reading the class band.

• • Two of the five sub-scores (ascites, encephalopathy) are subjective. Inter-rater drift is real, especially for grade I-II encephalopathy.
• • Reference 1-year and 2-year survival come from the 1973 Pugh paper and reflect that era's case mix. They are a useful reference, not a survival prediction, and modern transplant-era cohorts may show different outcomes.

Class is a band, not a continuous probability. A total of 9 sits at the top of class B, and a total of 10 sits at the bottom of class C, with reference 1-year survival moving from 80% to 45%. Treat the band as a structured read.

According to Cholongitas E et al., Aliment Pharmacol Ther 2005 (PMID 16305721), MELD is a better predictor of short-term mortality for transplant prioritisation, while Child Pugh remains a useful bedside severity read

For other pretest-probability tallies that pair a clinical exam with a band-based read, 4TS Score shows the same pattern applied to heparin-induced thrombocytopenia.