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Contact Force-Controlled Zero-Fluoroscopy Catheter Ablation of Right-sided and Left Atrial Arrhythmia Substrates
G Kerst, HJ Weig, S Weretka, P Seizer, M Hofbeck... - Heart Rhythm, 2012 - Elsevier Background Conventional catheter ablation of cardiac arrhythmias is associated with radiation risks for patients and laboratory personnel. However, nonfluoroscopic catheter guidance may increase the risk for inadvertent cardiac injury. A novel radiofrequency ...
Figure 1. Three-dimensional contours of cardiovascular structures constructed by contact force guided nonfluoroscopic electroanatomical mapping for zero-fluoroscopy catheter ablation of right-sided and left atrial tachycardias. A: Contact force guided belly patch electroanatomical map. Three-dimensional contours of IVC, RA, and CS were constructed by sweeping the catheter tip with an integrated contact force sensor across the IVC and the respective cardiac structures using the belly patch as positional reference. The created geometries facilitate placement of further diagnostic catheters. Left anterior oblique view. B: Catheter ablation of typical AV nodal reentrant tachycardia. Right anterior oblique view (left panel) and left anterior oblique view (right panel). The green catheter is located in the CS; the red catheter is located at the His bundle; and the ablation catheter tip with an integrated contact force sensor is on the successful ablation site. Red spheres, radiofrequency applications; yellow spheres, His bundle. C: Left anterior oblique view of an activation map of nonsustained RVOT tachycardia showing a posteroseptal origin. Brown filled circles, radiofrequency applications (accelerating and terminating RVOT tachycardia, proximal RVOT, in sinus rhythm as safety applications, distal RVOT). D: Catheter ablation of symptomatic paroxysmal atrial fibrillation. Right anterior oblique view (left panel) and left anterior oblique view (right panel). Red spheres, radiofrequency applications; yellow spheres, His bundle. CS = coronary sinus; IVC = inferior vena cava; LA = left atrium; LAA = left atrial appendage; LIPV = left inferior pulmonary vein; LSPV = left superior pulmonary vein; RA = right atrium; RIPV = right inferior pulmonary vein; RSPV = right superior pulmonary vein; RVOT = right ventricular outflow tract; SVC = superior vena cava.
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Contact Force-Controlled Zero-Fluoroscopy Catheter Ablation of Right-sided and Left Atrial Arrhythmia Substrates |
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