Abstract 11167: Prevalent Locations of Left Atrial Scar in Patients with Non-Paroxysmal Atrial Fibrillation: A Single-Center Experience
| Autor: | Sanghamitra Mohanty, CHINTAN G TRIVEDI, Domenico G Della Rocca, William Zagrodzky, Carola Gianni, Angel Mayedo, Bryan MacDonald, John Burkhardt, G Gallinghouse, Amin Al-ahmad, Rodney Horton, Luigi Di Biase, Andrea Natale |
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| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Circulation. 144 |
| ISSN: | 1524-4539 0009-7322 |
| Popis: | Introduction: Left atrial (LA) scar, identified by bipolar voltage mapping, is a frequent finding in patients with non-paroxysmal atrial fibrillation (NPAF). We evaluated the most common sites of scar formation in the LA in a series of NPAF patients. Methods: Consecutive NPAF patients undergoing their first catheter ablation at our center were included in this analysis. Voltage mapping was performed in sinus rhythm (SR) using a 3D electro-anatomic mapping system and a 10-pole circular mapping catheter. The LA was divided into following regions: septum, posterior wall, lateral wall, anterior wall and roof. The threshold for low voltage was Results: A total of 359 NPAF (224, 62.4% persistent AF) patients undergoing their first ablation procedure with voltage mapping performed in SR were included in this study. Mean number of points taken to map the scar was 281.2±96.3. Low voltage area was detected in 209/359 (58%) cases; 108 (48.62%) persistent AF, 101(74.8%) long-standing persistent AF, p Conclusion: In the NPAF population, LA scar was detected in significantly less number of persistent AF patients. Scars were mostly located in the posterior wall of left atrium followed by the antero-septum region. Characterization of the LA scars would be helpful in optimizing the ablation targets. |
| Databáze: | OpenAIRE |
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