The Model for End-Stage Liver Disease (MELD) is a reliable measure of mortality risk in patients with end-stage liver disease. It is used as a disease severity index to help prioritize allocation of organs for transplant. The MELD Sodium adds the sodium to the calculation to better categorize patients with cirrhois with mortality.
MELD − Na − [0.025 × MELD × (140 − Na)] + 140
Sodium < 125 is calculated at 125.Sodium > 140 is calculated at 140.