Impact of Localisa on Ablation Management
The vast majority of conventional mapping techniques currently used involve the recording of electrical events from electrodes positioned at various intracardiac locations. This process requires catheter movement through multiple sites within the heart to obtain activation mapping and entrainment data at these places. Insight into the electrophysiological behavior of the heart is obtained by combining the information from the electrogram recording with anatomical information gathered from fluoroscopic images. Therefore, optimal positioning of catheters for electrophysiological studies and interventional procedures requires integration of a knowledge of cardiac anatomy and radiographic correlates of the main anatomic landmarks with their intracardiac electrograms . But cardiac chambers and the catheters positioned inside them are three-dimensional structures represented by fluoroscopy in two-dimensional planes, and thereby we frequently misjudge the spatial relationships between them. By using sequential fluoroscopic views, we can try to determine more precisely the relative position of the catheters inside the heart chambers. Nevertheless, the processing of data to form an electrospatial representation of cardiac activation is a cumbersome task, highly dependent on the mental agility and memory of the operator.
KeywordsCatheter Ablation Atrial Flutter Fluoroscopy Time Ablation Management Reentrant Tachycardia
Unable to display preview. Download preview PDF.
- 1.Singer I (1999) Catheterization and electrogram recordings. In: Singer I (ed) Interventio-nal electrophysiology. Williams & Wilkins, Baltimore, pp 27–59Google Scholar
- 8.Senatore G, Carreras G, Taglieri C et al (2002) Catheter ablation of nodal re-entrant tachycardia with LocaLisa navigation system. Europace 3[Suppl A]:A239Google Scholar
- 9.Senatore G, Carreras G, Taglieri C et al (2002) Catheter ablation of atrial flutter with LocaLisa navigation system. Europace 3[Suppl A]:A240Google Scholar
- 12.Macle L, Jaïs P, Shah D et al (2000) Pulmonary vein disconnection guided by the LocaLisa system. Circulation 102[Suppl 5]:560Google Scholar
- 13.Wever EFD, Elvan A, Ramanna H et al (1999) Catheter ablation of ventricular tachycardia in patients with structural heart disease using a nonfluoroscopic localization system (Localisa). Pacing Clin Electrophysiol 22, 4-II:P734Google Scholar