Tridimensional Mapping: Guided Modification of the Sinus Node

Tridimensional Mapping: Guided Modification of the Sinus Node. Radiofrequency (RF) catheter modification of the sinus node appears to he a promising therapeutic modality for the treatment of inappropriate sinus tachyeardia Modification, as opposed to total obliteration, of the atrial pacemaker requires precise localization of the sinus node. This has been successfully achieved with a multicatheter approach guided by intracardiac echocardiography. This article describes the first clinical use of a tridimensional nonfluoroscopic mapping system to guide successful RF modification of the sinus node in two cases of inappropriate sinus tachycardia. This system simplifies the current approach and greatly reduces the fluoroscopy time.     

Left Atrial Appendage Tip: An Unusual Site of Successful Ablation After Failed Endocardial and Epicardial Mapping and Ablation

Left Atrial Appendage Tip. Uncommon sites of ablation for arrhythmias can be the cause of failed ablations. This series includes 4 cases requiring ablation at the tip of the left atrial appendage after both endocardial and epicardial mapping and ablation failed. (J Cardiovasc Electrophysiol, Vol. 21, pp. 203‐206, February 2010)