Figure 1 | Scientific Reports

Figure 1

From: Measurement of the QT interval using the Apple Watch

Figure 1

Method used to collect lead I, lead II, and the V2 lead with the smartwatch. Lead I was recorded with the smartwatch on the left wrist and the right index finger on the crown (A). Lead II was obtained with the smartwatch on the left lower abdomen and the right index finger on the crown (B). Chest lead V2 was recorded with smartwatch in the fourth intercostal space left parasternal with the right index finger on the crown (C).

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