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Five cases of severe hyponatremia in the elderly successfully treated with low doses of hydrocortisone
Masahiro Takei1, Satoru Suzuki, Ai Sato
1Department of Geriatrics and Aging Medicine, Shinshu University Graduate School of Medicine, Matsumoto City, Nagano 390-8621, Japan.
Abstract:
Hyponatremia is commonly defined as a serum sodium concentration of 135 mEq/L or less, which is reported to occur in 0.97-2.48% of hospitalized patients. Especially, in elderly patients, severe hyponatremia is sporadically developed without any complaints. Although a variety of causes of hyponatremia are documented, diagnosis of functional adrenal insufficiency is difficult because of a lack of the diagnostic criteria. In this case report, we present five cases of hyponatremia in the elderly, who were presumed to have functional adrenal insufficiency, successfully treated with low doses of hydrocortisone.
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