Hyponatremia with Serum Sodium Rising Too Quickly During Treatment
When serum sodium corrects faster than the established safe thresholds, prompt action is required. This protocol addresses the clinical situation in which serum sodium increases by more than 10 mmol/L in the first 24 hours of treatment, or by more than 8 mmol/L in any 24-hour period thereafter.
Clinical Scenario
Serum sodium is rising too rapidly: an increase in serum sodium concentration >10 mmol/L during the first 24 h of treatment, or >8 mmol/L in any subsequent 24 h. Prompt intervention is recommended to avoid the risks associated with overcorrection.
Treatment Approach (partial overview)
The first step is stopping the current active treatment; what follows, determined in consultation with an expert, targets bringing serum sodium back within safe limits — the complete corrective regimen is in the full protocol.
Clinical Goal
Re-lowering of serum sodium concentration so that the total rise does not exceed 10 mmol/L in the first 24 h, or 8 mmol/L in any 24-hour period thereafter.
References
We recommend prompt intervention for re-lowering the serum sodium concentration if it increases >10 mmol/l during the first 24 h or >8 mmol/l in any 24 h thereafter (1D).
We recommend discontinuing the ongoing active treatment (1D).
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