Management of Hyponatremia in Tuberculosis Patients

Classification and Diagnosis

Hyponatremia in tuberculosis patients can be classified as mild (126-135 mEq/L), moderate (120-125 mEq/L), or severe (<120 mEq/L) 1
Assessment should include serum and urine osmolality, urine electrolytes, and evaluation of extravascular fluid volume status 1

For mild hyponatremia, no specific treatment is required other than monitoring and water restriction 1
For mild hyponatremia, continue anti-tuberculosis therapy as prescribed 2
For moderate hyponatremia, implement fluid restriction to 1,000 mL/day 3, 4
For moderate hyponatremia, consider discontinuation of diuretics if applicable 4
For severe hyponatremia, implement stricter fluid restriction and administer albumin infusion 3, 4
Monitor serum sodium levels regularly for moderate hyponatremia 1
Monitor serum sodium every 2 hours during initial correction for severe hyponatremia 1
Ensure correction rate does not exceed 8 mmol/L in 24 hours to avoid osmotic demyelination syndrome 4, 1

Hyponatremia in tuberculosis is associated with increased morbidity and mortality 1
Patients with serum sodium ≤130 mEq/L are at increased risk for developing complications 3
Chronic hyponatremia requires gradual correction to avoid osmotic demyelination syndrome 4
Monitoring for improvement in serum sodium levels should be part of the follow-up during tuberculosis treatment 1

Avoid overly rapid correction of chronic hyponatremia as it may lead to osmotic demyelination syndrome 4