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During routine evaluation of the horse, intermittent ventricular pre-excitation was identified on the ECG, characterized by a short PQ interval and abnormal QRS morphology. A right cranial location of the AP was suspected from the 12-lead ECG and vectorcardiography. After precise localization of the AP using 3D EAM, ablation was performed and AP conduction was eliminated. Immediately after recovery from anesthesia an occasional pre-excited complex still was observed, but a 24-hour ECG and an ECG during exercise 1 and 6\u2009weeks after the procedure showed complete disappearance of pre-excitation. This case shows the feasibility of 3D EAM and RFCA to identify and treat an AP in horses.<\/jats:p>","DOI":"10.1111\/jvim.16668","type":"journal-article","created":{"date-parts":[[2023,3,3]],"date-time":"2023-03-03T05:00:02Z","timestamp":1677819602000},"page":"728-734","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":19,"title":["Three-dimensional electro-anatomical mapping and radiofrequency ablation as a novel treatment for atrioventricular accessory pathway in a horse: A case report"],"prefix":"10.1093","volume":"37","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2361-6225","authenticated-orcid":false,"given":"Eva","family":"Buschmann","sequence":"first","affiliation":[{"name":"Reproduction and Population Medicine, Faculty of Veterinary Medicine, Ghent University Equine Cardioteam Ghent, Department of Internal Medicine, , Merelbeke,","place":["Belgium"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0165-5215","authenticated-orcid":false,"given":"Glenn","family":"Van Steenkiste","sequence":"additional","affiliation":[{"name":"Reproduction and Population Medicine, Faculty of Veterinary Medicine, Ghent University Equine Cardioteam Ghent, Department of Internal Medicine, , Merelbeke,","place":["Belgium"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tim","family":"Boussy","sequence":"additional","affiliation":[{"name":"AZ Groeninge Department of Cardiology, , Kortrijk,","place":["Belgium"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8185-1450","authenticated-orcid":false,"given":"Ingrid","family":"Vernemmen","sequence":"additional","affiliation":[{"name":"Reproduction and Population Medicine, Faculty of Veterinary Medicine, Ghent University Equine Cardioteam Ghent, Department of Internal Medicine, , Merelbeke,","place":["Belgium"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Stijn","family":"Schauvliege","sequence":"additional","affiliation":[{"name":"and Anaesthesia and Orthopaedics, Faculty of Veterinary Medicine, Ghent University Department of Large Animal Surgery, , Merelbeke,","place":["Belgium"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8129-2006","authenticated-orcid":false,"given":"Annelies","family":"Decloedt","sequence":"additional","affiliation":[{"name":"Reproduction and Population Medicine, Faculty of Veterinary Medicine, Ghent University Equine Cardioteam Ghent, Department of Internal Medicine, , Merelbeke,","place":["Belgium"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5191-5241","authenticated-orcid":false,"given":"Gunther","family":"van Loon","sequence":"additional","affiliation":[{"name":"Reproduction and Population Medicine, Faculty of Veterinary Medicine, Ghent University Equine Cardioteam Ghent, Department of Internal Medicine, , Merelbeke,","place":["Belgium"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"286","published-online":{"date-parts":[[2023,3,1]]},"reference":[{"key":"2026020302552148200_jvim16668-bib-0001","first-page":"331","article-title":"Electrocardiography in horses - 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