St Jean G, Hull B L, Robertson J T, Hoffsis G F, Haibel G K
Department of Veterinary Clinical Sciences, Ohio State University, College of Veterinary Medicine, Columbus 43210.
Vet Surg. 1988 Sep-Oct;17(5):258-62. doi: 10.1111/j.1532-950x.1988.tb01011.x.
Urethral extension was performed in 14 cows with clinical urovagina and infertility. Urovagina was corrected in nine cows (64%) and was reduced in the others. Formation of fistulas at the cranial end of the extension site was the most frequent complication (4 cows). In one cow, the urethral extension was not extended far enough caudally. Eleven cows (79%) returned to fertility after surgery. Severity of urine pooling, cranial displacement of the urethral orifice, and severe preoperative vaginitis may explain the failure of the urethral extension in some cows.
对14头患有临床尿道阴道瘘和不孕症的奶牛进行了尿道延长术。9头奶牛（64%）的尿道阴道瘘得到了纠正，其他奶牛的病情有所减轻。延长部位头端形成瘘管是最常见的并发症（4头奶牛）。有1头奶牛，尿道延长术向尾侧延伸得不够远。11头奶牛（79%）术后恢复了生育能力。尿液积聚的严重程度、尿道口的头侧移位以及严重的术前阴道炎可能解释了部分奶牛尿道延长术失败的原因。
