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

## TL;DR

A woman's ECG showed a Brugada pattern due to high potassium levels, which normalized after treatment.

## Contribution

This case highlights hyperkalemia as a rare cause of a Brugada phenocopy, emphasizing the importance of electrolyte evaluation.

## Key findings

- Hyperkalemia can mimic Brugada Syndrome on ECG.
- ECG returned to normal after treating the underlying electrolyte imbalance.

## Abstract

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.