Apple Watch® facilitates single‐session catheter ablation of coexisting atrioventricular nodal reentrant tachycardia and atrioventricular reentrant tachycardia

Figures

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  FIGURE 1. A. Baseline electrocardiogram (ECG). B. HR trend recordings from the patient's Apple Watch® over three weeks. Each red line indicates the range of the heart rates over one day. Green and blue arrows indicate tachycardia of 150–180 and 180–220 /min, respectively. The rectangle corresponds to the ablation day. Apple Watch® did not record a heart rate higher than 150 /min after the ablation day

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  FIGURE 2. A. 12‐lead ECG during the AVRT with a heart rate of 150‐160/min. The retrograde P’ waves (red arrow) were negative in leads II, III, and aVF, and all chest leads. B. Intracardiac electrogram during AVRT. The blood pressure did not decrease. The blue and red arrows represent the retrograde atrial activation recorded by the CS and His catheters, respectively. The former was much earlier than the latter. C. Catheter position at the successful ablation site of posterolateral accessory pathway in the fluoroscopic image. D. Early continuous VA’ potential was found in the ablation catheter. 1.3 seconds after starting RF ablation at this site, the AVRT terminated via VA block. E. 12‐lead electrocardiogram during the AVNRT with a heart rate higher than 200 /min. A late r notch (green arrow) was observed in the terminal portion of the QRS in lead V1. Another notch (red arrow) appeared to be a retrograde conducted P’ wave in the terminal portion of the QRS in leads II, III, and aVF. F. Intracardiac electrogram during AVNRT. The red arrows indicate the His potential. G. Systolic blood pressure decreased to a level lower than 50 mm Hg. H. Catheter position at the successful ablation site of…