Smartwatch detection of ventricular tachycardia: Case series

Figure 1. Apple Watch recording of symptomatic ventricular tachycardia. A: Apple Watch recording demonstrating a regular, wide complex tachycardia. The patient reported symptoms of rapid, pounding, or fluttering heartbeat. B: Apple Watch recording in sinus rhythm without symptoms.

Figure 2. Inducible ventricular tachycardia (VT) during electrophysiology study. A: Inducible VT with a left bundle branch, superior axis, meeting major criteria for arrhythmogenic right ventricular cardiomyopathy and matching the wide complex tachycardia recording obtained from the Apple Watch in Figure 1. B,C: Bipolar (B) and unipolar (C) electroanatomic voltage maps of the right ventricle in the right anterior oblique projection. A larger region of abnormal voltage (green) is displayed on the unipolar voltage map at the basal-mid right ventricular free wall.

Figure 3. Ventricular tachycardia recorded on smartwatch. Representative rhythm obtained by the patient during symptoms, with device output describing the arrhythmia.