maratoolMELD/MELD-Na vs Child-Pugh
A side-by-side comparison of MELD & MELD-Na Score and Child-Pugh Score (Cirrhosis).
The MELD (Model for End-Stage Liver Disease) and Child-Pugh scores both quantify cirrhosis severity but were built for different purposes. Child-Pugh (1973) was originally developed to predict surgical mortality in patients undergoing portocaval shunts; MELD (2000) was built to predict 3-month mortality in patients with end-stage liver disease and is now used by UNOS for liver transplant prioritization. MELD-Na (2016) adds serum sodium to improve prediction in patients with hyponatremia.
When to use MELD & MELD-Na Score
Use MELD or MELD-Na for transplant listing decisions, prognosis on the waiting list, and prediction of 3-month mortality in advanced cirrhosis. MELD-Na is the current UNOS standard (since 2016) and adds sensitivity in patients with low sodium, who would otherwise be underprioritized for transplant.
When to use Child-Pugh Score (Cirrhosis)
Use Child-Pugh for general cirrhosis severity grading (A/B/C), surgical risk assessment in non-transplant operations, and prognosis in clinical literature published before MELD became standard. It remains useful at the bedside because the inputs (ascites, encephalopathy) are clinical rather than purely laboratory.
Side-by-side comparison
| MELD & MELD-Na | Child-Pugh Score (Cirrhosis) | |
|---|---|---|
| Year introduced | 2000 (MELD), 2016 (MELD-Na) | 1973 (Child), 1973 update (Pugh) |
| Inputs | INR, bilirubin, creatinine, (sodium) | Bilirubin, albumin, INR, ascites, encephalopathy |
| Input type | All objective lab values | Mix of lab + clinical assessment |
| Score range | 6–40 | 5–15 (A 5–6, B 7–9, C 10–15) |
| Primary use | Transplant prioritization | Surgical risk, general severity |
| Predicts | 3-month mortality | 1-year and 2-year mortality |
| Subjective elements | None | Ascites grade, encephalopathy grade |
| Current transplant standard | Yes (UNOS uses MELD-Na since 2016) | No |
Bottom line
MELD-Na is the score for transplant listing and end-stage prognosis. Child-Pugh is the bedside grader and the score most older studies report — both still appear in practice.
Frequently asked questions
Why did MELD replace Child-Pugh for transplant?
Child-Pugh has subjective inputs (ascites and encephalopathy grading) that introduce inter-rater variability. MELD uses only objective lab values, making it more reproducible and less gameable for transplant prioritization.
When does MELD-Na change management?
In patients with serum sodium < 137, MELD-Na yields a higher score than MELD alone — reflecting that hyponatremia is an independent mortality risk in cirrhosis. This can move a patient up the transplant waiting list.
Can I use MELD for non-transplant decisions?
Yes — MELD predicts surgical mortality for non-transplant operations in cirrhotic patients (MELD > 15 is a relative contraindication for elective surgery). However Child-Pugh is more commonly cited in non-transplant literature.
What if a patient is on dialysis?
Use creatinine = 4.0 mg/dL for MELD calculation if the patient has had two dialysis sessions in the prior week — this is the UNOS convention to prevent artificially low MELD scores.