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Hyponatremia in hospitalized children
A Wattad1, M L Chiang, L L Hill
1Department of Pediatrics, Baylor College of Medicine, Houston, Texas.
Clinical Pediatrics
|March 1, 1992
Summary
Hyponatremia (low sodium) affects 1.38% of hospitalized children. While often caused by gastroenteritis or diuretics, outcomes are linked more to underlying conditions than the sodium levels themselves.
Area of Science:
- Pediatric Hospital Medicine
- Pediatric Nephrology
- Pediatric Critical Care
Background:
- Hyponatremia, defined as serum sodium < 130 mEq/L, is a common electrolyte disturbance in hospitalized children.
- Understanding its frequency, causes, and clinical significance is crucial for patient management and outcomes.
Purpose of the Study:
- To determine the incidence, etiology, and clinical impact of hyponatremia in a pediatric hospital population.
- To investigate the relationship between hyponatremia and patient outcomes, including neurologic impairment and mortality.
Main Methods:
- Retrospective review of clinical and laboratory data for all hyponatremic children admitted over a 12-month period.
- Analysis of patient demographics, admission status, underlying diagnoses, causes of hyponatremia, and clinical outcomes.
Main Results:
- Hyponatremia occurred in 1.38% of 11,702 admissions (161 patients).
- Causes included acute gastroenteritis (on admission) and diuretic therapy (hospital-acquired).
- Most patients (77%) had chronic illnesses; severe hyponatremia (<120 mEq/L) was rare.
- Neurologic impairment and mortality were associated with underlying medical conditions, not solely hyponatremia.
Conclusions:
- Hyponatremia is relatively common in hospitalized children, with varied causes.
- Patient prognosis is primarily dictated by the severity of underlying medical disorders.
- The hyponatremic state itself appears to have less impact on morbidity and mortality compared to the primary illness.