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How to identify the location of an accessory pathway by the 12-lead ECG
Radiofrequency catheter ablation has become the treatment of choice for patients with symptomatic Wolff-Parkinson-White syndrome (WPW). The QRS complex morphology present on the 12-lead electrocardiogram (ECG) in WPW patients depends on the location of the accessory pathway(s) (AP) and the degree of fusion over the normal atrioventricular (AV) conduction. Accordingly, it is determined by the site of ventricular insertion of the accessory pathway, AV node conduction time, and atrial conduction.How to perform linear lesions
Atrial fibrillation (AF) is a particularly complex arrhythmia because the mechanisms leading to fibrillation are not fully understood. Accordingly, ablation strategies have evolved largely on an empirical basis. The creation of linear lesions is a fundamental strategy that is indispensable to an electrophysiology laboratory performing ablation for treatment of this arrhythmia.
