How is syndrome of inappropriate antidiuretic hormone secretion (SIADH) usually detected?

Updated: Aug 16, 2019
  • Author: Christie P Thomas, MBBS, FRCP, FASN, FAHA; Chief Editor: Vecihi Batuman, MD, FASN  more...
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Depending on the magnitude and rate of development, hyponatremia may or may not cause symptoms.Consequently, the syndrome of inappropriate antidiuretic hormone secretion.(SIADH). is usually detected by laboratory testing.

In general, slowly progressive hyponatremia is associated with fewer symptoms than is a rapid drop of serum Na+ to the same value. Patients with moderate, chronic hyponatremia may have decreased reaction times, cognitive slowing, and ataxia resulting in frequent falls.

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