First clinical experience using the DiamondTemp catheter and a novel omnipolar high-resolution mapping system for atrial fibrillation ablation

Figures

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  Figure 1. Schematic visualization of the utilized connections between the DiamondTemp ablation system, the EnSite X, and the electrophysiological (EP) recording system.

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  Figure 2. Connection template of the EnSite X mapping system and configuration of the DiamondTemp catheter.

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  Figure 3. Typical example of a three-dimensional reconstruction using the novel high-resolution omnipolar mapping system EnSite X in conjunction the DiamondTemp ablation catheter. Left panel: Left atrium (LA) with bipolar voltage information from advanced mapping, using the HD Grid catheter. Posteroanterior view of the right atrium, in the back of the LA. Right panel: Acute procedural success in terms of pulmonary vein isolation. Bipolar voltage mapping shows isolated pulmonary veins (gray color) and normal atrial tissue (purple color) of the LA. Ablation tags are color-coded, representing different pulmonary vein segments.

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  Figure 4. Institutional workflow for pulmonary vein isolation, utilizing the DiamondTemp ablation catheter guided by EnSite X.

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  Figure 5. A. Typical example of pulmonary vein isolation from posterior view; B, C, D. Demonstrate left atrial substrate modification in terms of a line from the mitral valve annulus to the right superior pulmonary vein and an extension to the left superior pulmonary vein.

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  Figure 6. A. Visualization of a large scar area across the anterior and septal part of the left atrium, using high-density mapping from EnSite X. A linear lesion set was applied from the mitral valve annulus to the right superior pulmonary vein (red ablations tags); B. The intra-atrial activation time represented by the duration from the P-wave onset until the left atrial appendage prior to ablation. C. The baseline noise of the distal and proximal electrode; D. The confirmation of block across the ablation line, by a significant prolongation of the intra-atrial conduction time. Conduction block was also confirmed via pacing maneuvers.