Catheter Ablation for Brugada Syndrome

Figures

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  Figure 1:. Epicardial activation mapping of the right ventricle. A: Normal RV electrogram duration was measured from the beginning of the QRS complex. B and C: Abnormal electrogram duration in the RVOT area, which extended beyond the end of the QRS complex, was measured from both the beginning and the end of the QRS complex. The A, B, and C in circles above correspond to the three electrograms below from left to right.

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  Figure 2:. Integration of the epicardial activation map with a CARTOSOUND® image and 3D CT scan with RVOT electrograms before (A) and after (B) pericardial warm saline infusion. The electrogram became more delayed and fractionated after warm saline infusion. The duration of the electrogram was measured from the beginning of the QRS complex.

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  Figure 3:. Left and right coronary angiograms before ablation. The ablation catheter was placed in the epicardial RVOT area at a safe distance from the left (A) and right (B) coronary arteries.

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  Figure 4:. Epicardial activation map postablation. Ablation lesions are shown. The fractionated delayed electrograms in the RVOT area were eliminated. As compared with the preablation ECG (A), the postablation ECG (B) showed the disappearance of the coved-type ST elevation in V1–V2. C: An example of an electrogram on the ablation catheter before and after ablation.