Treatment of Hypernatremia with Serum Sodium Above 160 mmol/L, or Symptomatic with Hyperthermia, Seizures, or Altered Consciousness
When serum sodium rises above 160 mmol/L, or when hypernatremia produces systemic symptoms such as hyperthermia, delirium, seizures, or coma, the clinical picture requires urgent, structured intervention. This is the severe end of the hypernatremia spectrum.
Clinical Scenario
Serum sodium greater than 160 mmol/L — or symptomatic hypernatremia presenting with hyperthermia, delirium, seizures, or coma. These features define a medical emergency requiring immediate escalation of care.
Management Approach
Medical Emergency
Management is considered in an intensive care or high dependency setting. Correction of serum sodium follows strictly defined rate limits to prevent permanent neurological injury — the complete correction protocol, monitoring schedule, and clinical checkpoints are in the full regimen.
References
- HYPERnatraemia (Mild to Moderate: 145–159 mmol/L, Severe: more than 160 mmol/L)
- Severe or symptomatic hypernatraemia (e.g. hyperthermia, delirium, seizures, coma)
- Medical emergency – consider management in an intensive care/high dependency setting.
- Serum sodium concentration should be reduced by not more than 0.5 mmol/L per hour.
- Not more than 10 mmol/L in 24 hours to prevent permanent neurological injury.
- Monitor every 4 hours in the first 24 hours.
View source ↗