William R. Pritchard Veterinary Medical Teaching Hospital, School of Veterinary Medicine, University of California-Davis, Davis, CA.
Department of Anatomy, Physiology, and Cell Biology, School of Veterinary Medicine, University of California-Davis, Davis, CA.
J Am Vet Med Assoc. 2022 May 21;260(S2):S80-S86. doi: 10.2460/javma.20.11.0615.
To describe uterine prolapse, predispositions, and outcomes in mares treated between 1988 and 2019.
24 mares with uterine prolapse.
Clinical records were retrospectively reviewed, and follow-up information was gathered. The Mann-Whitney U test and Fisher exact test were used to analyze results for history and outcome variables for potential association with mare survival to hospital discharge. The χ2 test was used to compare breed distribution.
Age was known in 23 mares (median, 11.1 years). For 15 mares with exact known parity, the median parity was 3 births (range, 1 to 13 births). For 22 mares, the maiden status was known (7 [32%] maiden; 15 [68%] multiparous). Breed distribution differed significantly between mares with uterine prolapse and all mares treated at the Veterinary Medical Teaching Hospital. Arabians were overrepresented in the uterine prolapse group (7/24 [29%]), compared with all mares treated (4,174/44,474 [9%]). Uterine prolapse occurred within 2 hours after parturition for 10 of 11 mares with known foaling times, after dystocia for 7 mares, and after abortion for 4 mares. Seventeen of 23 (74%) mares survived to hospital discharge. Acute hemorrhage was the most frequent cause of death. There were no correlations between mare survival to hospital discharge and mare parity or age, foal sex, retained fetal membranes, sepsis, or maiden status. Colts were overrepresented in foals with a known sex (12/17).
Results indicated a breed predisposition to uterine prolapse, with Arabian mares overrepresented among affected mares. No characteristics correlated with mare survival to hospital discharge.
描述 1988 年至 2019 年间治疗的马的子宫脱垂、易患因素和结果。
24 匹患有子宫脱垂的母马。
回顾性分析临床记录，并收集随访信息。使用曼-惠特尼 U 检验和 Fisher 确切检验分析与母马存活至出院相关的病史和结果变量，χ²检验用于比较品种分布。
23 匹母马的年龄已知（中位数 11.1 岁）。15 匹确切已知胎次的母马中，中位胎次为 3 产（范围 1 至 13 产）。22 匹母马的初配情况已知（7 匹[32%]初配；15 匹[68%]经产）。患有子宫脱垂的母马与兽医教学医院治疗的所有母马之间的品种分布差异显著。在子宫脱垂组中，阿拉伯马（7/24 [29%]）的比例过高，而所有治疗母马（44474/44474 [9%]）中阿拉伯马的比例正常。11 匹已知分娩时间的母马中，有 10 匹在分娩后 2 小时内发生子宫脱垂，7 匹发生在难产后，4 匹发生在流产后。23 匹母马中有 17 匹（74%）存活至出院。急性出血是最常见的死亡原因。母马存活至出院与母马胎次或年龄、驹性别、胎衣滞留、败血症或初配情况之间无相关性。已知性别的驹中，公驹比例过高（17/17）。
结果表明存在子宫脱垂的品种易感性，受影响的母马中阿拉伯马比例过高。没有特征与母马存活至出院相关。
