Matsas D J
Department of Large Animal Clinical Sciences, Virginia-Maryland Regional College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg 24061-0442.
J Am Vet Med Assoc. 1993 Feb 15;202(4):610-2.
Measurement of blood progesterone concentrations with a rapid, on-farm test was used to guide the clinical management of 3 cows with parturient disorders. An 8-year-old cow in the third trimester of pregnancy had chronic vaginocervical prolapse with partially dilated (4 cm) necrotic cervix. Blood progesterone concentration estimated with the test kit was low (< 2 ng/ml), and the cervical dilatation was attributed to stage-1 parturition. Vaginal delivery of the calf occurred 7 hours later. A 2-year-old cow examined for dystocia had a uterine torsion. Eighteen hours after apparent correction of the torsion, the cervix had failed to dilate. Blood progesterone concentration was 2 to 5 ng/ml, suggesting parturition had not yet been initiated. Parturition was induced with dexamethasone and prostaglandin, and calving occurred 32 hours later. A pregnant, 16-month-old heifer was believed to be about to calve and was admitted because of potential need cesarean section. Examination revealed the cervix to be closed. Blood progesterone concentration was low, and calving was predicted to occur within 24 hours. The heifer was monitored, and stage-2 labor was observed 8 hours later. The calf was delivered with minor assistance. In each case, the test provided diagnostic information that was useful in making therapeutic management decisions.
使用一种快速的农场检测方法来测定血液中孕酮的浓度，以指导3头患有分娩障碍奶牛的临床管理。一头怀孕晚期的8岁奶牛患有慢性阴道子宫颈脱垂，宫颈部分扩张（4厘米）且坏死。用检测试剂盒估计的血液孕酮浓度较低（<2纳克/毫升），宫颈扩张归因于第一产程。7小时后小牛经阴道分娩。一头因难产接受检查的2岁奶牛发生了子宫扭转。在扭转明显纠正18小时后，宫颈未能扩张。血液孕酮浓度为2至5纳克/毫升，表明尚未开始分娩。用地塞米松和前列腺素诱导分娩，32小时后产犊。一头怀孕的16个月龄小母牛被认为即将产犊，因可能需要剖宫产而入院。检查发现宫颈闭合。血液孕酮浓度较低，预计24小时内会产犊。对这头小母牛进行了监测，8小时后观察到第二产程。小牛在轻微协助下产出。在每种情况下，该检测都提供了有助于做出治疗管理决策的诊断信息。
