Impact of interruptions in radiofrequency energy delivery on lesion characteristics
| Autor: | Jonathan P. Piccini, Jeffrey M. Fish, Stephen A. Gaeta, Riki Thao, John H. Tranter, Daniel J. Friedman, Jed A. Overmann |
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| Rok vydání: | 2020 |
| Předmět: |
Male
Radiofrequency ablation Swine medicine.medical_treatment Heart Ventricles Catheter ablation 030204 cardiovascular system & hematology law.invention Lesion 03 medical and health sciences 0302 clinical medicine law Physiology (medical) Medicine Animals 030212 general & internal medicine business.industry Arrhythmias Cardiac Ablation Catheter Disease Models Animal medicine.anatomical_structure Ventricle Catheter Ablation Ventricular Ablation medicine.symptom Cardiology and Cardiovascular Medicine Nuclear medicine business Radiofrequency energy |
| Zdroj: | Heart rhythm. 17(8) |
| ISSN: | 1556-3871 |
| Popis: | Background During catheter ablation, delivery of radiofrequency (RF) energy to a target site is sometimes interrupted by catheter instability and clinical factors. The impact of interruption of RF delivery on lesion characteristics has not been characterized. Objective The purpose of this study was to determine the impact of interruption of RF application on lesion size. Methods Forty-two RF ablation lesions (21 left ventricle, 21 right ventricle) were created in the ventricles of 6 swine using power control mode (30 W; target contact force 15g) with 1 of 3 conditions: 15-second ablation (15s), 30-second ablation (30s), or two 15-second ablations (15s×2) at the same site separated by a 2-minute pause. Results Lesion volume was significantly larger for 30s lesions (501 ± 146 mm3) compared to both 15s×2 (314 ± 98 mm3) and 15s (242 ± 104 mm3) lesions (P Conclusion Compared to lesions resulting from continuous RF ablation, lesions resulting from interrupted ablation have a smaller overall lesion volume, predominantly due to smaller lesion width. These data suggest that if disruption in energy delivery occurs, lesions may need closer spacing to avoid gaps. |
| Databáze: | OpenAIRE |
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