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Outcomes with Sodium Overcorrection in Chronic Hyponatremia: A Systematic Review and Meta-analysis
Angela R Schneider1, Luiza M Radu2, Karen L Tang2,3
1Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada. angela.schneider2@albertahealthservices.ca.
Journal of General Internal Medicine
|February 6, 2026
Summary
Overcorrection of chronic hyponatremia may increase neurologic risks but lower mortality. However, evidence is very limited, suggesting a need to focus on adequate sodium correction rather than solely avoiding overcorrection.
Area of Science:
- Nephrology and Endocrinology
- Clinical Medicine
- Evidence Synthesis
Background:
- Chronic hyponatremia is a prevalent electrolyte disorder linked to poor patient outcomes.
- Current guidelines prioritize avoiding overcorrection, but optimal correction rates remain debated.
- This review examines outcomes associated with overcorrection in chronic hyponatremia.
Purpose of the Study:
- To systematically review and meta-analyze evidence on patient and healthcare utilization outcomes of overcorrection in adults with chronic hyponatremia.
- To assess the association between overcorrection and neurologic complications, acute care utilization, and mortality.
Main Methods:
- A systematic search of Medline and EMBASE databases was conducted.
- Included studies were experimental or observational research on adult chronic hyponatremia patients with and without overcorrection.
- Outcomes included neurologic complications, acute care utilization, and mortality; quality was assessed using the Newcastle-Ottawa Scale.
Main Results:
- Forty-three studies were included in the analysis.
- Overcorrection was linked to higher odds of neurologic complications (OR 4.23) but lower odds of mortality (OR 0.67).
- Sensitivity analyses and overall evidence quality indicated significant limitations and very low certainty.
Conclusions:
- While overcorrection shows a potential association with increased neurologic risks and decreased mortality, current evidence is limited and of very low certainty.
- The findings suggest a need to re-evaluate clinical practice to focus on achieving adequate sodium correction, not just avoiding overcorrection.
- Cautious interpretation of results is necessary due to study limitations and risk of bias.
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