Health Dictionary Find a Doctor

Syndrome of inappropriate antidiuretic hormone electrocardiogram

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Vindhya BellamKonda, M.B.B.S [2]

Overview

Electrocardiogram (EKG) may be helpful in the diagnosis of SIADH. Findings on an EKG suggestive of SIADH are like classic Brugada like pattern, include downward coving of ST-segment and T-wave inversion in the anterior precordial leads. The EKG changes will be normalized after the sodium levels were corrected.

Electrocardiogram

References

  1. 1.0 1.1 Tamene A, Sattiraju S, Wang K, Benditt DG (2010). “Brugada-like electrocardiography pattern induced by severe hyponatraemia”. Europace. 12 (6): 905–7. doi:10.1093/europace/euq034. PMID 20185483.
  2. Laville M, Burst V, Peri A, Verbalis JG (2013). “Hyponatremia secondary to the syndrome of inappropriate secretion of antidiuretic hormone (SIADH): therapeutic decision-making in real-life cases”. Clin Kidney J. 6 (Suppl 1): i1–i20. doi:10.1093/ckj/sft113. PMC 4438352. PMID 26069838.
  3. Agrawal Y, Aggarwal S, Kalavakunta JK, Gupta V (2016). “All that looks like “Brugada” is not “Brugada”: Case series of Brugada phenocopy caused by hyponatremia”. J Saudi Heart Assoc. 28 (4): 274–7. doi:10.1016/j.jsha.2016.02.003. PMC 5034561. PMID 27688678.

© 2026 MyEClinic – IFTM Institut für Telematik in der Medizin GmbH