Electromagnetic Versus Fluoroscopic Mapping of the Inferior Isthmus for Ablation of Typical Atrial Flutter
| Autor: | Ulrike Wetzel, Gerhard Schuler, Burkhardt Hügl, Anne Fleck, Hans Kottkamp, Beate Krauss, Gerhard Hindricks |
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| Rok vydání: | 2000 |
| Předmět: |
Male
medicine.medical_specialty Time Factors medicine.medical_treatment Catheter ablation Physiology (medical) Internal medicine Typical atrial flutter medicine Humans Prospective randomized study Prospective Studies Vein business.industry Follow up studies Middle Aged medicine.disease Ablation medicine.anatomical_structure Atrial Flutter Fluoroscopy Catheter Ablation Cardiology Female Radiology Cardiology and Cardiovascular Medicine business Electromagnetic Phenomena Atrial flutter Follow-Up Studies |
| Zdroj: | Circulation. 102:2082-2086 |
| ISSN: | 1524-4539 0009-7322 |
| DOI: | 10.1161/01.cir.102.17.2082 |
| Popis: | Background —Radiofrequency catheter ablation within the tricuspid annulus–inferior caval vein isthmus can cure typical atrial flutter. The target for ablation, nonetheless, is relatively wide, and standard ablation procedures may require significant exposure to radiation. Methods and Results —A total of 50 patients (mean age, 58±11 years) with typical atrial flutter were prospectively randomized to receive isthmus ablation using conventional fluoroscopy for catheter navigation (group I, n=24) or electromagnetic mapping (group II, n=26). Complete bidirectional isthmus block was verified with double potential mapping. If complete isthmus block could not be achieved after 20 radiofrequency pulses or 25 minutes of fluoroscopy, the patients were switched to the other group. Eight patients from group I (33%) but only 1 patient from group II (4%) were switched. Overall, complete isthmus block was achieved in 47 of 50 patients (94%). The overall fluoroscopy time, including the placement of the diagnostic catheters, was 22.0±6.3 minutes in group I and 3.9±1.5 minutes in group II ( P P Conclusions —Electromagnetic mapping during the induction of linear lesions for the ablation of atrial flutter permitted a highly significant reduction in exposure to fluoroscopy while maintaining high efficacy, and it allowed the time required for fluoroscopy to be reduced to levels anticipated for diagnostic electrophysiological studies. |
| Databáze: | OpenAIRE |
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