Noncontact mapping of ectopic atrial tachycardias: different characteristics of isopotential maps and unipolar electrogram. 2003

Karlheinz Seidl, and Harald Schwacke, and Monika Rameken, and Axel Drögemüller, and Graydon Beatty, and Jochen Senges
Herzzentrum Ludwigshafen, Cardiology Bremserstr. 79, 67063 Ludwigshafen, Germany. seidlk@klilu.de

The success rate for catheter ablation of ectopic atrial tachycardia (AT) has been limited by the inherent difficulty in localizing the site of origin within the complex three-dimensional structures of the atria. The objective of the study was to determine the usefulness of a noncontact mapping system for catheter ablation of AT. Radiofrequency ablation of 25 ATs was performed using a noncontact mapping system. Three different characteristics of isopotential maps and unipolar electrogram morphologies were observed: Group 1: Isopotential maps displayed a narrow, sharp ring of colors around a white, center spot. Unipolar electrograms revealed a Q-S morphology with a rapid dV/dt. Group 2: Isopotential maps displayed a broad ring of colors with little or no white spot in the center. Unipolar electrograms revealed a low amplitude, broad and smooth Q-S morphology in front of a second component with a rapid dV/dt. Group 3: Isopotential maps displayed a broad ring of colors. Unipolar electrogams revealed a low amplitude and fractionated waveform followed by endocardial breakthrough with a gradual dV/dt. Radiofrequency catheter ablation was successful in all ATs of groups 1 and 2, and failed in two of three ATs in group 3. The overall success rate was 92%. No severe complications were observed. Noncontact isopotential mapping is helpful to identify and characterize the origin of ectopic AT. Ablation success is associated with the characteristics of isopotential maps and unipolar electrogram morphologies. The overall success rate was 92%.

UI MeSH Term Description Entries
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D013612 Tachycardia, Ectopic Atrial Abnormally rapid heartbeats originating from one or more automatic foci (nonsinus pacemakers) in the HEART ATRIUM but away from the SINOATRIAL NODE. Unlike the reentry mechanism, automatic tachycardia speeds up and slows down gradually. The episode is characterized by a HEART RATE between 135 to less than 200 beats per minute and lasting 30 seconds or longer. Atrial Ectopic Tachycardia,Ectopic Atrial Tachycardia,Atrial Ectopic Tachycardias,Atrial Tachycardia, Ectopic,Atrial Tachycardias, Ectopic,Ectopic Atrial Tachycardias,Ectopic Tachycardia, Atrial,Ectopic Tachycardias, Atrial,Tachycardia, Atrial Ectopic,Tachycardias, Atrial Ectopic,Tachycardias, Ectopic Atrial
D016022 Case-Control Studies Comparisons that start with the identification of persons with the disease or outcome of interest and a control (comparison, referent) group without the disease or outcome of interest. The relationship of an attribute is examined by comparing both groups with regard to the frequency or levels of outcome over time. Case-Base Studies,Case-Comparison Studies,Case-Referent Studies,Matched Case-Control Studies,Nested Case-Control Studies,Case Control Studies,Case-Compeer Studies,Case-Referrent Studies,Case Base Studies,Case Comparison Studies,Case Control Study,Case Referent Studies,Case Referrent Studies,Case-Comparison Study,Case-Control Studies, Matched,Case-Control Studies, Nested,Case-Control Study,Case-Control Study, Matched,Case-Control Study, Nested,Case-Referent Study,Case-Referrent Study,Matched Case Control Studies,Matched Case-Control Study,Nested Case Control Studies,Nested Case-Control Study,Studies, Case Control,Studies, Case-Base,Studies, Case-Comparison,Studies, Case-Compeer,Studies, Case-Control,Studies, Case-Referent,Studies, Case-Referrent,Studies, Matched Case-Control,Studies, Nested Case-Control,Study, Case Control,Study, Case-Comparison,Study, Case-Control,Study, Case-Referent,Study, Case-Referrent,Study, Matched Case-Control,Study, Nested Case-Control
D017115 Catheter Ablation Removal of tissue with electrical current delivered via electrodes positioned at the distal end of a catheter. Energy sources are commonly direct current (DC-shock) or alternating current at radiofrequencies (usually 750 kHz). The technique is used most often to ablate the AV junction and/or accessory pathways in order to interrupt AV conduction and produce AV block in the treatment of various tachyarrhythmias. Ablation, Transvenous Electric,Catheter Ablation, Electric,Catheter Ablation, Percutaneous,Catheter Ablation, Radiofrequency,Catheter Ablation, Transvenous,Ablation, Catheter,Ablation, Transvenous Electrical,Catheter Ablation, Electrical,Electric Catheter Ablation,Electrical Catheter Ablation,Percutaneous Catheter Ablation,Radiofrequency Catheter Ablation,Transvenous Catheter Ablation,Ablation, Electric Catheter,Ablation, Electrical Catheter,Ablation, Percutaneous Catheter,Ablation, Radiofrequency Catheter,Ablation, Transvenous Catheter,Electric Ablation, Transvenous,Electrical Ablation, Transvenous,Transvenous Electric Ablation,Transvenous Electrical Ablation
D018780 Body Surface Potential Mapping Recording of regional electrophysiological information by analysis of surface potentials to give a complete picture of the effects of the currents from the heart on the body surface. It has been applied to the diagnosis of old inferior myocardial infarction, localization of the bypass pathway in Wolff-Parkinson-White syndrome, recognition of ventricular hypertrophy, estimation of the size of a myocardial infarct, and the effects of different interventions designed to reduce infarct size. The limiting factor at present is the complexity of the recording and analysis, which requires 100 or more electrodes, sophisticated instrumentation, and dedicated personnel. (Braunwald, Heart Disease, 4th ed) Body Surface Mapping,Body Surface Mappings,Mapping, Body Surface,Mappings, Body Surface,Surface Mapping, Body,Surface Mappings, Body
D022062 Electrophysiologic Techniques, Cardiac Methods to induce and measure electrical activities at specific sites in the heart to diagnose and treat problems with the heart's electrical system. Cardiac Electrophysiologic Techniques,Electrophysiologic Study, Cardiac,Atrial Electrogram,Bundle of His Electrogram,Cardiac Electrophysiologic Technics,Cardiac Electrophysiological Techniques,Electrophysiologic Techniques, Intracardiac,Electrophysiological Techniques, Cardiac,Electrophysiological Techniques, Intracardiac,His Bundle Electrogram,Intra-Atrial Electrogram,Intracardiac Electrogram,Intracardiac Electrophysiologic Techniques,Intracardiac Electrophysiological Technics,Intracardiac Electrophysiological Techniques,Programmed Electrostimulation, Cardiac,Transesophageal Electrophysiologic Study,Transesophageal Electrophysiological Study,Atrial Electrograms,Bundle Electrogram, His,Bundle Electrograms, His,Cardiac Electrophysiologic Studies,Cardiac Electrophysiologic Study,Cardiac Electrophysiologic Technic,Cardiac Electrophysiologic Technique,Cardiac Electrophysiological Technique,Cardiac Programmed Electrostimulation,Cardiac Programmed Electrostimulations,Electrogram Bundle, His,Electrogram Bundles, His,Electrogram, Atrial,Electrogram, His Bundle,Electrogram, Intra-Atrial,Electrogram, Intracardiac,Electrograms, Atrial,Electrograms, His Bundle,Electrograms, Intra-Atrial,Electrograms, Intracardiac,Electrophysiologic Studies, Cardiac,Electrophysiologic Studies, Transesophageal,Electrophysiologic Study, Transesophageal,Electrophysiologic Technic, Cardiac,Electrophysiologic Technics, Cardiac,Electrophysiologic Technique, Cardiac,Electrophysiologic Technique, Intracardiac,Electrophysiological Studies, Transesophageal,Electrophysiological Study, Transesophageal,Electrophysiological Technic, Intracardiac,Electrophysiological Technics, Intracardiac,Electrophysiological Technique, Cardiac,Electrophysiological Technique, Intracardiac,Electrostimulation, Cardiac Programmed,Electrostimulations, Cardiac Programmed,His Bundle Electrograms,His Electrogram Bundle,His Electrogram Bundles,Intra Atrial Electrogram,Intra-Atrial Electrograms,Intracardiac Electrograms,Intracardiac Electrophysiologic Technique,Intracardiac Electrophysiological Technic,Intracardiac Electrophysiological Technique,Programmed Electrostimulations, Cardiac,Studies, Cardiac Electrophysiologic,Studies, Transesophageal Electrophysiologic,Studies, Transesophageal Electrophysiological,Study, Cardiac Electrophysiologic,Study, Transesophageal Electrophysiologic,Study, Transesophageal Electrophysiological,Technic, Cardiac Electrophysiologic,Technic, Intracardiac Electrophysiological,Technics, Cardiac Electrophysiologic,Technics, Intracardiac Electrophysiological,Technique, Cardiac Electrophysiologic,Technique, Cardiac Electrophysiological,Technique, Intracardiac Electrophysiologic,Technique, Intracardiac Electrophysiological,Techniques, Cardiac Electrophysiologic,Techniques, Cardiac Electrophysiological,Techniques, Intracardiac Electrophysiologic,Techniques, Intracardiac Electrophysiological,Transesophageal Electrophysiologic Studies,Transesophageal Electrophysiological Studies

Related Publications

Karlheinz Seidl, and Harald Schwacke, and Monika Rameken, and Axel Drögemüller, and Graydon Beatty, and Jochen Senges
January 2004, Pacing and clinical electrophysiology : PACE,
Karlheinz Seidl, and Harald Schwacke, and Monika Rameken, and Axel Drögemüller, and Graydon Beatty, and Jochen Senges
March 2001, Journal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing,
Karlheinz Seidl, and Harald Schwacke, and Monika Rameken, and Axel Drögemüller, and Graydon Beatty, and Jochen Senges
May 1987, Japanese circulation journal,
Karlheinz Seidl, and Harald Schwacke, and Monika Rameken, and Axel Drögemüller, and Graydon Beatty, and Jochen Senges
January 2018, Heart rhythm,
Karlheinz Seidl, and Harald Schwacke, and Monika Rameken, and Axel Drögemüller, and Graydon Beatty, and Jochen Senges
January 1966, Pediatria,
Karlheinz Seidl, and Harald Schwacke, and Monika Rameken, and Axel Drögemüller, and Graydon Beatty, and Jochen Senges
October 2003, Pacing and clinical electrophysiology : PACE,
Karlheinz Seidl, and Harald Schwacke, and Monika Rameken, and Axel Drögemüller, and Graydon Beatty, and Jochen Senges
August 2009, Heart rhythm,
Karlheinz Seidl, and Harald Schwacke, and Monika Rameken, and Axel Drögemüller, and Graydon Beatty, and Jochen Senges
November 2015, Journal of cardiovascular electrophysiology,
Karlheinz Seidl, and Harald Schwacke, and Monika Rameken, and Axel Drögemüller, and Graydon Beatty, and Jochen Senges
December 2023, Annals of medicine,
Karlheinz Seidl, and Harald Schwacke, and Monika Rameken, and Axel Drögemüller, and Graydon Beatty, and Jochen Senges
June 2020, JACC. Clinical electrophysiology,
Copied contents to your clipboard!