European outbreak of atypical myopathy in the autumn 2009 |
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| Authors: | Gaby Van Galen DVM MSc DECEIM Helene Amory DVM PhD DECEIM Evita Busschers DVM DACVS Dominique Cassart DVM PhD Marco De Bruijn DVM DECEIM Vincent Gerber DVM PhD DECEIM John Keen DVM MSc DECEIM Laurence Lefere DVM Christel Marcillaud Pitel DVM Celia Marr DVM PhD DECEIM Jessica‐M V Müller DVM DECEIM Xavier Pineau DVM Claude Saegerman PhD Charlotte Sandersen DVM PhD DECEIM Didier Serteyn DVM PhD DECVAA Sara Torfs DVM Lucia Unger DVM Denis Verwilghen DVM MSc DECVS Dominique‐Marie Votion DVM PhD |
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| Institution: | 1. Equine Teaching Hospital, Faculty of Veterinary Medicine, Liege University, Liege, Belgium;2. Equine Hospital, Veterinair Centrum Someren, Someren, The Netherlands;3. Department of Pathology, Faculty of Veterinary Medicine, Liege University, Liege, Belgium;4. Equine Clinic Wolvega, Oldeholtpade, The Netherlands;5. Equine Teaching Hospital, Faculty of Veterinary Medicine, Bern University, Bern, Switzerland;6. Large Animal Hospital Easter Bush Veterinary Centre, Royal (Dick) School of Veterinary Studies, University of Edinburgh, Roslin, UK;7. Equine Teaching Hospital, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium;8. RESPE, Réseau d'Epidémio‐Surveillance en Pathologie Equine, Mondeville, France;9. Equine Hospital, Rossdales and Partners, Newmarket, UK;10. Equine Teaching Hospital, Faculty of Veterinary Medicine, Hannover University, Hannover, Germany;11. Centre d'Informations Toxicologiques Vétérinaires de Lyon, Ecole Nationale Vétérinaire de Lyon, Marcy l'Etoile, France;12. Department of Epidemiology, Faculty of Veterinary Medicine, Liege University, Liege, Belgium;13. Centre of Mont‐le‐Soie, Mont‐le‐Soie, Vielsalm, University of Liege, Liege, Belgium |
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| Abstract: | Background – Atypical myopathy is an acute, severe rhabdomyolysis occurring in grazing horses. In the beginning of October 2009, a new outbreak occurred in several European countries. Geographic, demographic and clinical data of the reported cases in the month October 2009 are described. Key Findings – The survival rate in this outbreak was 25%. The most frequently observed clinical signs were congested mucous membranes, dyspnea, tachycardia, depression, weakness, stiffness, recumbency, trembling, sweating, and myoglobinuria. Nonsurvivors were significantly more likely to be recumbent than survivors. Prognostic factors, symptomatic treatment, and preventive measures are discussed. Significance – Differences were encountered during the described outbreak of atypical myopathy in October 2009 compared with previous outbreaks reported. Equine practitioners should be aware that previous epidemiological studies have shown that after a high prevalence in the autumn, new cases are likely to occur in the following spring. |
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| Keywords: | horses muscle enzymes myoglobinuria survival rate |
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