Laboratory of Carnivore Reproduction, Veterinary College, State University of Ceará, Fortaleza, CE, Brazil.
Anim Reprod Sci. 2012 Jan;130(1-2):99-104. doi: 10.1016/j.anireprosci.2011.12.019. Epub 2012 Jan 10.
The aims were to determine resistance index (RI) and pulsatility index (PI) in the uterine arteries of cyclic and pregnant domestic cats comparing the left and right uterine horns, as well as the majority or minority uterine horns, based on fetus number per horn; to determine the presence or absence of an early diastolic notch (EDN) in the uterine artery of pregnant queens. Ten domestic cats were followed during one cycle and one pregnancy until 63rd days after mating. The estrous cycle length was 16 ± 9.57 days. The uterine horn with the highest number of fetuses (majority uterine horn - MUH) presented 2.0 ± 1.0 fetus and the lower (minority uterine horn - miUH) presentes 0.78 ± 0.67 fetus. There were no differences in indexes between uterine arteries during the cycles and pregnancies. The RI and PI of MUH were lower than miUH (P<0.05). Uterine artery of the MUH presented lower indexes than miUH during the acceptance period (P<0.05). On D14 of pregnancy, uterine artery presented reductions in both indexes for the miUH. On D56, the PI was reduced in the miUH. The indexes depended on the week of pregnancy. EDN was present on the uterine arteries of all cats until D35, but disappeared by D49. The blood flow varied according to the category of horn.
目的是确定周期性和妊娠家猫的子宫动脉阻力指数（RI）和搏动指数（PI），比较左右子宫角，以及每个角的胎儿数量，以确定妊娠母猫子宫动脉是否存在早期舒张期切迹（EDN）。对 10 只家猫在一个周期和一次妊娠期间进行了跟踪，直到交配后第 63 天。发情周期长度为 16 ± 9.57 天。胎儿数量最多的子宫角（多数子宫角-MUH）有 2.0 ± 1.0 个胎儿，而数量较少的（少数子宫角-miUH）有 0.78 ± 0.67 个胎儿。在周期和妊娠期间，子宫动脉的指数没有差异。MUH 的 RI 和 PI 低于 miUH（P<0.05）。接受期 MUH 的子宫动脉指数低于 miUH（P<0.05）。在妊娠第 14 天，miUH 的子宫动脉的两个指数都降低了。在第 56 天，miUH 的 PI 降低了。指数取决于妊娠周数。EDN 存在于所有猫的子宫动脉中，直到第 35 天，但在第 49 天消失。血流根据角的类别而变化。
