Approximately 8% of those presenting with an arrhythmia have arrhythmia-induced cardiomyopathy, with atrial fibrillation (AF) being the most common cause. (1, 2) Persistent tachycardia, defined as heart rates >100-110 beats per minute for days to weeks due to AF, can lead to left ventricular (LV) systolic dysfunction. (3) However, AF may also contribute to the development of cardiomyopathy independent of tachycardia (Figure 1). (4)
Authors Sub-editor: Sameer Zaman Heartbeat Sub-Editor: Padraig O Drisceoil Dr Pádraig Ó Drisceoil is a Cardiology Speciality Trainee from the Wessex Deanery, who is currently an
