Tested on Gulf Medical Boards (DHA, SMLE, MOH & HAAD)
Clinical calculations and diagnostic scoring systems like MELD-Na Score frequently appear on Prometric exams. Master high-yield clinical vignettes with instant AI-powered pathophysiology rationales.
What is the MELD-Na Score?
The MELD-Na Score is an evidence-based clinical decision rule engineered to quantify diagnostic probability, stratify clinical severity, and guide therapeutic decision-making in gastroenterology & hepatology practice. The Model for End-Stage Liver Disease (MELD) incorporates serum sodium (MELD-Na) to better predict 90-day mortality in patients with cirrhosis. It is the standard scoring system used by UNOS for prioritizing liver transplant allocation. Clinical scoring tools like MELD-Na Score are essential in acute and outpatient management, enabling clinicians to objectively differentiate between low-risk candidates suitable for conservative therapy and high-risk patients requiring urgent interventions. Verified against current 2026 clinical standards, this tool is extensively tested on Gulf health authority licensing exams including DHA (Dubai), SMLE (Saudi Arabia), MOH, HAAD/DOH (Abu Dhabi), OMSB (Oman), and QCHP (Qatar).
💡Clinical Pearls & Diagnostic Utility
MELD-Na is the standard metric used by UNOS for the prioritization of patients awaiting liver transplantation in the USA. Higher scores equal higher priority.
Formula & Calculation Parameters
The mathematical equation and clinical variables required to calculate MELD-Na Score:
Score Interpretation & Clinical Stratification
| Score Range | Clinical Interpretation | Risk Tier |
|---|---|---|
| ≤ 9 | Low Risk (<2% 90-day mortality) | green |
| 10 – 19 | Moderate Risk | yellow |
| 20 – 29 | High Risk (20-50% mortality) | orange |
| ≥ 30 | Very High Risk (>50% mortality) | red |
When to Exercise Caution
Calculations can fluctuate rapidly with changes in creatinine or sodium (e.g. from over-diuresis). It is not designed to predict post-transplant survival, only waitlist mortality.
Clinical Review Board
Dr. Muhammad Nouman, MBBS
Capital Medical University | PMDC Reg No: 117744-P
Clinical Audit Status
✓ Verified for 2026 Guidelines
Last updated: 2026-08-07
Peer-Reviewed Medical Literature
- •Biggins SW, Kim WR, Terrault NA, et al. Evidence-based incorporation of serum sodium concentration into MELD. Gastroenterology. 2006;130(6):1652-1660.
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