A mimic of tachycardia‐bradycardia syndrome in a patient with long‐standing persistent atrial fibrillation

Abstract

Key Clinical Message Pause following incessant tachycardia is often encountered in clinical practice. We encountered a rare arrhythmic condition mimicking tachycardia‐bradycardia syndrome. We hereby describe the step‐by‐step diagnostic process.

Keywords

• long‐standing persistent atrial fibrillation
• narrow QRS regular tachycardia
• pause