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Article
December 1965

Hyponatremia in Subarachnoid Hemorrhage

Arch Neurol. 1965;13(6):633-638. doi:10.1001/archneur.1965.00470060069007
Abstract

THE SYNDROME of inappropriate secretion of the antidiuretic hormone (ADH) was originally described by Schwartz and his co-workers1 in two patients with bronchiogenic carcinoma. The most outstanding clinical findings were the signs and symptoms of water intoxication, and the outstanding laboratory finding was hyponatremia. Fuisz,2 in an extensive review of hyponatremia, has outlined the following criteria for diagnosis of inappropriate ADH secretion: (1) hyponatremia, (2) renal sodium loss and hypertonic urine, (3) symptoms of water intoxication, (4) resistance to correction by hypertonic saline infusions, and (5) reversibility following water restriction.

The syndrome has been described in a variety of disease states, many of them involving the central and peripheral nervous system. It has been seen with cerebral injury,3 encephalitis,4 poliomyelitis,4 meningitis,5 polyneuritis,6 diffuse cerebral damage in infancy,7 supratentorial8 and infratentorial9 brain tumors, following irradiation of an intrasellar tumor,10

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