Ceftiofur Side Effect in a Mare-Case Report.

The research article discusses a rare case of adverse drug reaction observed in a mare post-administration of the antibiotic ceftiofur hydrochloride. The reaction manifested as difficulty in walking, heart rate fluctuations, and incoordination, that were thankfully reversed.

Overview and Purpose of the Study

• The researchers aim to document and describe a peculiar instance of adverse drug reaction in a 5-year-old Crioulo broodmare which had recently given birth.
• Rare but severe side effects of antibiotics in horses serve as a significant concern for caretakers and veterinarians.

Case Description and Initial Symptoms

• The mare showed signs of difficulty in walking and increased pulse and heart rate after fighting with another mare.
• Initial diagnosis pointed towards rhabdomyolysis (a condition where muscle tissue breaks down) and laminitis (inflammation of the tissue inside the hoof).
• As a preventive measure against endotoxemia (presence of toxins in the blood), a dose of flunixin meglumine was administered intravenously.

Prior to Drug Reaction

• Blood results showed high counts of white blood cells, specifically neutrophils and monocytes, indicating possible infection.
• To combat this infection, the mare was treated with ceftiofur hydrochloride, a potent antibiotic usually well-tolerated by horses.

The Drug Reaction

• The first day of treatment passed without any signs of adverse drug reactions. However, upon administering the second dose, the mare manifested signs of incoordination, dizziness, and balance loss.
• The symptoms resolved shortly after administration of dexamethasone, a type of steroid medication.
• Given the reaction to ceftiofur hydrochloride, treatment was shifted to enrofloxacin, another antibiotic, resulting in complete recovery of the mare.

Significance of the Study

• Such incidents, although rare, highlight the importance of monitoring animals post-treatment and adjusting treatment plans if adverse reactions occur.
• This study provides valuable data for veterinarians and horse owners on potential side effects of antibiotics, fostering informed decisions regarding equine health.