LAUSR

Complete resolution of the electrocardiogram (ECG) abnormalities was demonstrated with hyperkalemia treatment and normalization of serum potassium levels. Introduction Escape-capture bigeminy can be an early sign of sick sinus node manifesting as sinoatrial exit block. Medications such as digoxin, beta-blockers, and calcium-channel blockers have been associated with escape-capture bigeminy but rarely associated with hyperkalemia. We demonstrate a case of complete resolution of the electrocardiogram (ECG) abnormalities following hyperkalemia treatment and normalization of serum potassium levels. A quick search for reversible cause and work-up is essential to avoid unnecessary delays in the recognition and treatment of the catastrophic noncardiac clinical conditions associated with this ECG finding.