Caudal vena cava isolation using ablation index‐guided radiofrequency catheter ablation (CARTO™ 3) to treat sustained atrial tachycardia in horses
Abstract Background Myocardial sleeves of the caudal vena cava are the predilection site for atrial tachycardia (AT) in horses. Caudal vena cava isolation guided by the ablation index, a lesion quality marker incorporating power, duration and contact force, might improve outcome. Objectives Describe...
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2025-01-01
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| Series: | Journal of Veterinary Internal Medicine |
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| Online Access: | https://doi.org/10.1111/jvim.17251 |
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| author | Eva Buschmann Glenn Van Steenkiste Ingrid Vernemmen Marie Demeyere Stijn Schauvliege Annelies Decloedt Gunther vanLoon |
| author_facet | Eva Buschmann Glenn Van Steenkiste Ingrid Vernemmen Marie Demeyere Stijn Schauvliege Annelies Decloedt Gunther vanLoon |
| author_sort | Eva Buschmann |
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| description | Abstract Background Myocardial sleeves of the caudal vena cava are the predilection site for atrial tachycardia (AT) in horses. Caudal vena cava isolation guided by the ablation index, a lesion quality marker incorporating power, duration and contact force, might improve outcome. Objectives Describe the feasibility and outcome of caudal vena cava isolation using ablation index‐guided radiofrequency catheter ablation (RFCA) to treat AT in horses. Animals Ten horses with sustained AT. Methods Records from 10 horses with sustained AT treated by three‐dimensional electro‐anatomical mapping and ablation index‐guided RFCA (CARTO™ 3) were reviewed. Results Three‐dimensional electro‐anatomical mapping of the right atrium identified a macro‐reentry circuit in the caudomedial right atrium (n = 10). Point‐by‐point RFCA was performed to isolate the myocardial sleeves of the caudal vena cava in power‐controlled mode with a mean of 17 ± 7 applications. The ablation index target was 400‐450. A median ablation index of 436 (range, 311‐763) was reached using a median maximum power of 35 (range, 24‐45) W for a median duration of 20 (range, 8‐45) seconds, with a median contact force of 10 (range, 3‐48) g. Sinus rhythm was restored in all 10 horses. To date, 9‐37 months post‐ablation, none of the horses have had recurrence. Conclusions and Clinical Importance Caudal vena cava isolation using ablation index‐guided RFCA was feasible and effective to permanently treat sustained AT in horses. Ablation index guidance ensured efficient lesion creation, and isolation of the caudal vena cava eliminated the arrhythmogenic substrate, thereby minimizing the risk of recurrence. |
| format | Article |
| id | doaj-art-fb524feec0a948499c460d9ea31721ed |
| institution | Kabale University |
| issn | 0891-6640 1939-1676 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Wiley |
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| series | Journal of Veterinary Internal Medicine |
| spelling | doaj-art-fb524feec0a948499c460d9ea31721ed2025-01-27T15:22:40ZengWileyJournal of Veterinary Internal Medicine0891-66401939-16762025-01-01391n/an/a10.1111/jvim.17251Caudal vena cava isolation using ablation index‐guided radiofrequency catheter ablation (CARTO™ 3) to treat sustained atrial tachycardia in horsesEva Buschmann0Glenn Van Steenkiste1Ingrid Vernemmen2Marie Demeyere3Stijn Schauvliege4Annelies Decloedt5Gunther vanLoon6Equine Cardioteam Ghent, Department of Internal Medicine, Reproduction and Population Medicine, Faculty of Veterinary Medicine Ghent University Merelbeke BelgiumEquine Cardioteam Ghent, Department of Internal Medicine, Reproduction and Population Medicine, Faculty of Veterinary Medicine Ghent University Merelbeke BelgiumEquine Cardioteam Ghent, Department of Internal Medicine, Reproduction and Population Medicine, Faculty of Veterinary Medicine Ghent University Merelbeke BelgiumEquine Cardioteam Ghent, Department of Internal Medicine, Reproduction and Population Medicine, Faculty of Veterinary Medicine Ghent University Merelbeke BelgiumDepartment of Large Animal Surgery, Anaesthesia and Orthopaedics Ghent University Merelbeke BelgiumEquine Cardioteam Ghent, Department of Internal Medicine, Reproduction and Population Medicine, Faculty of Veterinary Medicine Ghent University Merelbeke BelgiumEquine Cardioteam Ghent, Department of Internal Medicine, Reproduction and Population Medicine, Faculty of Veterinary Medicine Ghent University Merelbeke BelgiumAbstract Background Myocardial sleeves of the caudal vena cava are the predilection site for atrial tachycardia (AT) in horses. Caudal vena cava isolation guided by the ablation index, a lesion quality marker incorporating power, duration and contact force, might improve outcome. Objectives Describe the feasibility and outcome of caudal vena cava isolation using ablation index‐guided radiofrequency catheter ablation (RFCA) to treat AT in horses. Animals Ten horses with sustained AT. Methods Records from 10 horses with sustained AT treated by three‐dimensional electro‐anatomical mapping and ablation index‐guided RFCA (CARTO™ 3) were reviewed. Results Three‐dimensional electro‐anatomical mapping of the right atrium identified a macro‐reentry circuit in the caudomedial right atrium (n = 10). Point‐by‐point RFCA was performed to isolate the myocardial sleeves of the caudal vena cava in power‐controlled mode with a mean of 17 ± 7 applications. The ablation index target was 400‐450. A median ablation index of 436 (range, 311‐763) was reached using a median maximum power of 35 (range, 24‐45) W for a median duration of 20 (range, 8‐45) seconds, with a median contact force of 10 (range, 3‐48) g. Sinus rhythm was restored in all 10 horses. To date, 9‐37 months post‐ablation, none of the horses have had recurrence. Conclusions and Clinical Importance Caudal vena cava isolation using ablation index‐guided RFCA was feasible and effective to permanently treat sustained AT in horses. Ablation index guidance ensured efficient lesion creation, and isolation of the caudal vena cava eliminated the arrhythmogenic substrate, thereby minimizing the risk of recurrence.https://doi.org/10.1111/jvim.17251arrhythmiaselectrophysiologyequine cardiologythree‐dimensional electro‐anatomical mapping |
| spellingShingle | Eva Buschmann Glenn Van Steenkiste Ingrid Vernemmen Marie Demeyere Stijn Schauvliege Annelies Decloedt Gunther vanLoon Caudal vena cava isolation using ablation index‐guided radiofrequency catheter ablation (CARTO™ 3) to treat sustained atrial tachycardia in horses Journal of Veterinary Internal Medicine arrhythmias electrophysiology equine cardiology three‐dimensional electro‐anatomical mapping |
| title | Caudal vena cava isolation using ablation index‐guided radiofrequency catheter ablation (CARTO™ 3) to treat sustained atrial tachycardia in horses |
| title_full | Caudal vena cava isolation using ablation index‐guided radiofrequency catheter ablation (CARTO™ 3) to treat sustained atrial tachycardia in horses |
| title_fullStr | Caudal vena cava isolation using ablation index‐guided radiofrequency catheter ablation (CARTO™ 3) to treat sustained atrial tachycardia in horses |
| title_full_unstemmed | Caudal vena cava isolation using ablation index‐guided radiofrequency catheter ablation (CARTO™ 3) to treat sustained atrial tachycardia in horses |
| title_short | Caudal vena cava isolation using ablation index‐guided radiofrequency catheter ablation (CARTO™ 3) to treat sustained atrial tachycardia in horses |
| title_sort | caudal vena cava isolation using ablation index guided radiofrequency catheter ablation carto™ 3 to treat sustained atrial tachycardia in horses |
| topic | arrhythmias electrophysiology equine cardiology three‐dimensional electro‐anatomical mapping |
| url | https://doi.org/10.1111/jvim.17251 |
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