A retrospective study of bitches with pyometra, medically treated with aglepristone

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Abstract

Pyometra is a common and life-threatening disease of intact bitches caused by hormonal influence of the uterus in combination with bacterial infection. The treatment of choice is ovariohysterectomy, but several purely medical options are available. Common drugs used for medical treatment in combination with antimicrobials are progesterone receptor blockers, prostaglandins, and dopamine agonists. The aim of this study was to evaluate long-term recovery and fertility after treatment with the progesterone receptor blocker aglepristone in bitches with pyometra. Data from 28 bitches with pyometra, admitted to the University Animal Hospital, Swedish University of Agricultural Sciences, during a 9-year period, were studied retrospectively and followed up by telephone interviews with the owners. The bitches had been treated with aglepristone at a dose of 10mg/kg on a median of four occasions. All bitches had also been treated with antimicrobial drugs for a mean duration of 23days, the most frequently used being enrofloxacin. Escherichia coli were the most commonly isolated bacteria from cranial vagina. The outcome was assessed for up to 6years after treatment. The success rate, determined as restored clinically healthy status, was 75% (21/28 bitches), and the recurrence rate of disease was 48% (10/21 bitches). The mean time until recurrence was 10.5months after the end of treatment. After treatment, 69% (9/13) of the mated bitches produced puppies. Of the seven bitches that did not have a successful treatment, six were ovariohysterectomized and one was euthanized. In conclusion, medical treatment with aglepristone in combination with antimicrobial therapy was successful in 75% of the bitches studied and the recurrence rate was 48%.

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Ros, L., Holst, B. S., & Hagman, R. (2014). A retrospective study of bitches with pyometra, medically treated with aglepristone. Theriogenology, 82(9), 1281–1286. https://doi.org/10.1016/j.theriogenology.2014.08.011

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