Synergistic Bradycardia from Beta Blockers, Hyperkalemia, and Renal Failure.

Background: Bradycardia is a common vital sign encountered in the emergency department. These patients are often hemodynamically stable and require no emergent intervention. On occasion, bradycardia can cause hemodynamic instability, and there are established treatment pathways involving atropine, ionotropic and vasopressive infusions, and eventual mechanical pacing, if necessary.