Appendix/Supporting file:
1A: 12 lead sinus rhythm ECG with pre-excitation.
1B: Fluoroscopy image of successful site in right anterior oblique 30-degree projection.
1C: Fluoroscopy image of successful ablation site in left anterior oblique 35-degree projection. Also notice the CS and RA catheter position.
2: Cartoon showing possible effect of RBBB during PHc and MHc.