Abstract
Tetanus is caused by toxins (tetanospasmin, tetanolysin and a non-spasmogenic toxin) synthesized by Clostridium tetani, a gram-positive, sporulating and obligate anaerobic bacterium. The equine species has high exposure and sensitivity to the pathogen. Therefore, prophylactic measures such as vaccination, antisepsis of wounds with hydrogen peroxide, and anti-tetanus serum in surgeries carried out in the field are essential for prevention. The clinical signs presented are the main diagnostic tool, as most of the time the signs are pathognomonic, including sawhorse stance, rigid gait, flag tail, protrusion of the 3rd eyelid, sensitivity to sound and light stimuli, dyspnea and dysphagia. Toxi-infection occurs from pre-existing wounds or from gastrointestinal injuries. The objective of this study is to report a case of tetanus in a 10-year-old grade mare, addressing diagnostic and therapeutic characteristics. Clinical treatment proved to be effective, with satisfactory results after intrathecal and intravenous application of anti-tetanus serum, combined with antibiotic therapy and medications that promote muscle relaxation. The animal was discharged after 22 days of clinically stable hospitalization.
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