Journal: European Heart Journal. Case Reports
Article Title: Electrical isolation of the cavotricuspid isthmus aneurysm: a novel strategy for refractory atrial tachyarrhythmias with complex anatomical variants: a case report
doi: 10.1093/ehjcr/ytaf334
Figure Lengend Snippet: Three-dimensional mapping imaging during the second session. ( A ) Pattern of AT-3 (clockwise cavotricuspid isthmus–dependent atrial flutter). ( B ) Earliest activation site (red arrow) and fractionated electrical signals recorded using a multipolar mapping catheter during irregular AT-4. ( C ) Fractionated electrical signals were extensively recorded within the cavotricuspid isthmus aneurysm and analysed using a complex signal identification (CARTO ELEVATE ™ ) (green tags within a white circle). ( D ) Electrical isolation of the cavotricuspid isthmus aneurysm after linear ablation of the septal and lateral wall; red indicates the absence of electrical activity.
Article Snippet: During the third session, reconnection of lateral CTI block line was identified using the RHYTHMIA HDx TM mapping system (Boston Scientific, Natick, MA, USA), resulting in extensive conduction delay areas in the CTI aneurysm ( and ).
Techniques: Imaging, Activation Assay, Isolation, Activity Assay