A case of Hyperkalemia-induced Brugada Phenocopy: a rare but serious electrocardiographic imposter

Brugada Syndrome is a potentially fatal, hereditary cardiac disorder that may precipitate sudden cardiac death if not identified. An electrocardiogram (ECG) revealing a characteristic coved ST segment elevation followed by negative T wave in a right-sided precordial lead is pathognomonic for the Brugada pattern. Recently it has been shown that certain abnormalities, such as an electrolyte disturbance, may precipitate a Brugada pattern on ECG. Once the precipitating factor is treated, the rhythm reverts to baseline, coining the term Brugada Phenocopy. Here we present a captivating case of a 40-year-old female who was found unresponsive and determined to have a Brugada pattern on ECG secondary to hyperkalemia. Once appropriately treated, ECG reverts to normal baseline.