Ventricular arrhythmias are common in cats with ARVC and can lead to syncope or sudden death. The arrhythmias are caused by macroreentrant circuits that develop in regions of fibrofatty replacement of cardiomyocytes. | Ventricular arrhythmias are common in cats with ARVC and can lead to syncope or sudden death. The arrhythmias are caused by macroreentrant circuits that develop in regions of fibrofatty replacement of cardiomyocytes. |