A COMPARISON OF UNIPOLAR VERSUS BIPOLAR MAPPING IN THE ABLATIAN OF THE MANIFEST ACCESSORY PATHWAYS

Abstract- Accessory pathways (AP) are abnormal myocardial connections between atria and ventricles with electrical conductive properties. We performed radiofrequency (RF) catheter ablation in 66 patients with manifest AP at Dr. Shariati Hospital during 5 years. Bipolar mapping was used in 48 patients and unipalar mapping in 18 patients to find the best site for RF energy delivery. We calculated total duration of the procedures, mean of RF energy dosage and delivery time, number of the lesions, and the success rate in each mode. We found that unipolar mode was preferred one for RF catheter ablation of the free wall accessory pathways