Initial Fluid Therapy for Children with Meningitis with Consideration of the Syndrome of Inappropriate Anti-diuretic Hormone

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Abstract
A review of 85 children with meningitis admitted to the University Children's Hospital at Hermann Hospital revealed that only six patients (7%) had sufficient clinical and laboratory evidence to be compatible with the diagnosis of inappropriate secretion of antidiuretic hormone (SIADH). This is in contrast with various communications in the pediatric literature that have reported an association between the two conditions of as high as 85%. Hyponatremia (serum sodium 135 mEq/ L) was observed in 27 (32%), but neither the initial laboratory data nor the subsequent follow-up data supported the diagnosis of SIADH. Moderate to severe dehydration was documented in 16 patients (19%) and suspected in more than 50% of the cases (serial weight determinations indicating an increase in weight from admission to discharge). Although the incidence of neurologic sequelae in this series was not influenced significantly by the presence or absence of hyponatremia, SIADH, or fluid restriction, the numbers are still small. Based on these data, routine fluid restriction cannot be recommended unless there is confirmatory evidence of SIADH.