229. Ask a Fellow - Hyponatremia Rate of Correction

Hyponatremia correction rates and the associated risk of osmotic demyelination syndrome (ODS) currently face significant reevaluation within the nephrology community. While medical dogma emphasizes strict, slow correction to prevent ODS, recent large-scale retrospective studies—including work by McMillan, Kinoshita, and Seethapathy—indicate that ODS is exceptionally rare and that slower correction rates may paradoxically correlate with increased in-hospital mortality and longer lengths of stay. These findings challenge the rigid application of existing guidelines, which recommend limiting sodium correction to 8–10 mEq/L per 24 hours. Although ODS remains a catastrophic outcome, particularly in patients with alcohol use disorder, malnutrition, or hypokalemia, the emerging data suggest that the clinical focus should shift toward identifying specific high-risk cohorts rather than applying universal, restrictive correction protocols. This shift prompts a necessary debate regarding the balance between avoiding rare neurological complications and optimizing overall patient outcomes.