Abstract

ABSTRACT Although rarely reported in veterinary medicine, this article shows three cases of dogs that presented anaphylactic reactions after intravenous administration of meloxicam at therapeutic doses. Three dogs of different breeds and ages were submitted to anesthesia for surgical procedures of ovariohysterectomy and repair of patellar luxation. The animals were classified as ASA I and did not present changes in clinical and laboratory tests. All dogs were anesthetized and monitored by anesthesiologists, with careful multiparametric evaluation. Near the end of the procedures, meloxicam was administered intravenously in all dogs, and the drug used had the same commercial presentation and concentration, but with different lot numbers and with different months. For less than a minute, the animals showed significant hypotension, with pressure values close to 30 mmHg or inaudible by Doppler. The animals had no skin signs, only hypotension and a decrease in heart rate in one of them. All dogs were immediately treated with intravenous ephedrine and atropine in the bradycardic patient. After the emergency treatment, the dogs showed stabilized vital signs, with no complications or need for additional intervention. After the event, the three dogs showed no signs of clinical, behavioral or laboratory changes.

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