Sunday, February, 12, 2012

Dilutional hyponatremia (SIADH)

Table of Contents

Alternative Names

Dilutional hyponatremia; Euvolemic hyponatremia; Hypervolemic hyponatremia; Hypovolemic hyponatremia


Symptoms

Common symptoms include:

  • Abnormal mental status
    • Confusion
    • Decreased consciousness
    • Hallucinations
    • Possible coma
  • Convulsions
  • Fatigue
  • Headache
  • Irritability
  • Loss of appetite
  • Muscle spasms or cramps
  • Muscle weakness
  • Nausea
  • Restlessness
  • Vomiting

Signs and tests

The health care provider will perform a complete physical examination to help determine the cause of your symptoms. Blood and urine tests will be done.

The following laboratory tests can confirm hyponatremia:

  • Comprehensive metabolic panel (includes blood sodium)
  • Osmolality blood test
  • Urine osmolality
  • Urine sodium

Review Date: 05/29/2011
Reviewed By: David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

A.D.A.M., Inc. is accredited by URAC, also known as the American Accreditation HealthCare Commission (www.urac.org)