Referenced in: none

Automatically associated channels: Nav1.5

Title: Brugada-like electrocardiographic patterns induced by hyperkalemia.

Authors: Dagmara Reingardienė, Jolita Vilčinskaitė, Diana Bilskienė

Journal, date & volume: Medicina (Kaunas), 2013 , 49, 148-53

PubMed link: http://www.ncbi.nlm.nih.gov/pubmed/23893060

Abstract
Brugada syndrome was described in 1992 as a new clinical and electrocardiographic syndrome involving susceptibility to ventricular arrhythmias and sudden cardiac death in patients with no obvious structural heart disease. Brugada syndrome is characterized by a hereditary anomaly in the sodium ion channel (mutation of the SCN5A gene) identified by a wide QRS associated with the ST-segment elevation and the T‑wave inversion in the right precordial leads. The Brugada-like electrocardiographic pattern can be caused by sodium channel-blocking drugs and electrolyte disorders. Hyperkalemia may produce multiple ECG abnormalities, including the ST-segment elevation and pseudomyocardial infarction with a resolution of these abnormalities after the correction of hyperkalemia. This article describes 8 cases of pseudoanteroseptal myocardial infarction in acute renal insufficiency with hyperkalemia. The ST-segment elevation related to hyperkalemia is resolved by the reduced serum potassium level. Clinicians should recognize that hyperkalemia is one of the etiologies of the Brugada-like electrocardiographic pattern.