Utility and limitations of smartwatch electrocardiogram monitoring in a patient with idiopathic monomorphic ventricular tachycardia

Figures

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  Figure 1. Apple Watch® single-lead ECG. The patient initiated recording on onset of palpitations by holding their finger to the digital crown of the watch for 30 seconds. This representative episode was recorded using the single-lead ECG function on their smartwatch (Apple Watch® Series 9, watchOS 10.0.2, Algorithm Version 2). The Apple Watch® recordings were from 23:10 and 23:11. The trace abnormality appears to represent polymorphic ventricular tachycardia (25 mm/s, 10 mm/mV, 512 Hz).

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  Figure 2. Standard in-hospital ECG tracings. A standard in-hospital ECG tracing obtained during admission. The tracings were taken at A: 23:15 and B: 23:21. The trace abnormality appears to represent monomorphic ventricular tachycardia. (25 mm/s, 10 mm/mV).