Accessory pathway–mediated cardiomyopathy: Left ventricular systolic dysfunction due to preexcitation

Figures

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  Figure 1. a: Baseline electrocardiogram (ECG). b: Surface ECG leads I, II, and V1 and intracardiac electrograms from high right atrium, His, coronary sinus, and right ventricular apex at baseline, with vertical line marking the timing of the His bundle electrogram.

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  Figure 2. a: Surface electrocardiogram leads I, II, and V1 and intracardiac electrograms from His, ablation catheter, and Halo catheter positioned around the tricuspid annulus and right ventricular apex showing loss of preexcitation with ablation. b: Fluoroscopic views in right anterior oblique 30 degree and left anterior oblique 55 degree projections demonstrating catheter positions during mapping at site of successful ablation.

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  Figure 3. Surface electrocardiogram at electrophysiology study at baseline and after ablation.