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Estimate TBW and plan hypernatremia correction. Updated 2026-08.
Estimate TBW and plan hypernatremia correction
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For education and screening only — not a substitute for professional medical assessment. Results should be interpreted by your healthcare provider.
Estimated TBW (typically 55-65% of weight in men, 45-55% in women). This is the volume available for sodium equilibration.
Mild deficit — oral water or slow IV replacement with frequent sodium checks.
Moderate deficit — IV planning; correct slowly (<0.5 mEq/L/hour, ≤10-12 mEq/L/day).
Severe deficit — hospital evaluation; controlled correction with frequent sodium monitoring.
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This content is a general reference, not medical advice, a diagnosis, or a treatment plan. Do not change your diet, fluids, medicines, or dialysis plan without your nephrologist or renal dietitian. Individual recommendations depend on your labs, medications, conditions, and care plan.