Powerflow Doppler Ultrasonography in the Evaluation of Mares with and Without Endometritis

There are no reports on the application of Powerflow mode Doppler ultrasound (US) in the diagnosis of endometritis when evaluating mares with or without endometritis. Therefore, our objective was to evaluate the blood flow of the uterine segments by Powerflow mode Doppler US, relating it to the days of the estrous cycle of mares with endometritis. The mares were separated into three groups: CG-control group with mares without endometritis; GES-group of mares with subclinical endometritis; and GEC-group of mares with clinical endometritis. With ovulation induction, the mares were monitored by transrectal B-mode US and Powerflow mode Doppler US of the uterine segments. The examinations were performed daily until the next ovulation. The subjective evaluation, performed by Powerflow mode Doppler ultrasound, proved to be efficient in detecting mares with clinical endometritis examined on days 1, 9, and 10 of the estrous cycle (<i>p</i> < 0.0001). It was found that subjective and objective evaluation of pixel quantity and intensity showed a significant, positive, and moderate correlation with ρ = 0.51 and ρ = 0.51, respectively (<i>p</i> < 0.0001). Thus, it is concluded that Powerflow Doppler ultrasound can be used to detect mares with clinical endometritis.