What is the incidence of hyponatremia in different neurologic conditions?

Updated: Jun 17, 2019
  • Author: Eric E Simon, MD; Chief Editor: Vecihi Batuman, MD, FASN  more...
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Using a retrospective case note analysis, an Irish study examined the incidence of hyponatremia in a variety of neurologic conditions. [33] The investigators found that the occurrence of hyponatremia was greater in persons with subarachnoid hemorrhage (62 out of 316 patients, or 19.6%; P< 0.001), intracranial neoplasm (56 out of 355 patients, or 15.8%; P< 0.001), traumatic brain injury (44 out of 457 patients, or 9.6%; P< 0.001), and pituitary disorders (5 out of 81 patients, or 6.25%; P = 0.004) than it was in patients with spinal disorders (4 out of 489 patients, or 0.81%).

The investigators also determined that the median hospital stay for patients with hyponatremia was 19 days, compared with a median stay of 12 days for the study's other patients.

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