28 Jan Kaiser Permanente Study Evaluates Speed of Recovery from Low Blood Sodium (Hyponatremia) and Adverse Outcomes
Dr. Mark
MedicalResearch.com Interview with:
Dustin Mark, MD
Emergency Medicine/Critical Care Medicine, East Bay
Adjunct Researcher, KPNC Division of Research, CREST Network
MedicalResearch.com: What is the background for this study?
Response: We examined medical records from 13,988 adults hospitalized with severe hyponatremia between 2008 and 2023 across 21 community hospitals in the Kaiser Permanente Northern California health system. Patients were grouped based on how quickly their sodium levels were corrected within a 24-hour period (< 8 meq/L, 8-12 meq/L, > 12 meq/L) and were followed for up to 90 days.
The primary outcome was death or serious delayed neurologic events, such as brain damage, seizures, paralysis, or altered consciousness. The results suggest that there is likely a true independent association between slow sodium correction and adverse outcomes, and that current guidelines promoting slow correction of sodium levels should be re-evaluated accordingly.
MedicalResearch.com: What are the main findings?
Response: Overall, 21% of patients experienced one of these outcomes. After adjusting for both propensity to correct at a given rate and risk factors for the outcomes of interest (including severity of illness), those whose sodium levels were corrected at medium (8-12 meq/L per 24 hours) or fast (>12 meq/L per 24 hours) rates had a significantly lower risk of death or neurologic complications than those treated more slowly, with the absolute difference being more pronounced among higher-risk patients, but also relatively consistent across risk strata and multiple patient characteristics
MedicalResearch.com: What should readers take away from your report?
Response: The results suggest that there is likely a true independent association between slow sodium correction and adverse outcomes, and that current guidelines promoting slow correction of sodium levels should be re-evaluated accordingly.
Citation: Dustin G. Mark, Mubarika Alavi, Joshua R. Nugent, et al. Sodium Correction Rates and Associated Outcomes Among Patients With Severe Hyponatremia: A Retrospective Cohort Study. Ann Intern Med. [Epub 27 January 2026]. doi:10.7326/ANNALS-25-03676
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Last Updated on January 28, 2026 by Marie Benz MD FAAD