Novel atrial pace-mapping technique based on dual-chamber electrograms to detect non-pulmonary vein foci

Utility of dual-chamber Electrogram-based pace mapping in a teenager with a focal atrial tachycardia, low inducibility, and indeterminate earliest excitation site

A 17-year-old patient presented with frequent palpitations, where the tachycardia was not sustained and could not be induced, making it impossible to pinpoint the earliest activation site using the activation map. However, by utilizing a dual-chamber electrogram-based pace mapping technique, we successfully identified the origin and achieved effective treatment.

Novel automated atrial pacemapping technique based on intracardiac pattern matching to identify the location of ectopic atrial activity

Atrial ectopy from the pulmonary veins and non-pulmonary vein foci can trigger atrial fibrillation. In addition, the elimination of atrial ectopy is important to prevent recurrence. The intracardiac pattern matching technique has been reported as a useful method to manually visualize the location of triggers regardless of their frequency. We combined the original intracardiac pattern matching method with the automapping setting of CARTO CONFIDENCE and discovered the automated atrial pacemapping technique. We report two cases in which this technique was used to eliminate the atrial triggers. This technique achieved a time reduction and high-resolution mapping.