Gregory S P
Department of Small Animal Medicine and Surgery, Royal Veterinary College, Hatfield, Hertfordshire, UK.
Br Vet J. 1994 Mar-Apr;150(2):135-50. doi: 10.1016/S0007-1935(05)80222-2.
Developments in understanding the pathophysiology of urinary incontinence caused by urethral sphincter mechanism incompetence (SMI) are reviewed. SMI is a multifactorial condition; affected bitches have shorter urethras, reduced urethral tone and more caudally positioned bladder necks than continent bitches. Other factors thought to be important in the aetiology of SMI include neutering, breed, body size, docking and obesity. Most of the recent developments in the understanding of SMI have resulted from radiographic and urodynamic investigations of normal and affected bitches. The urodynamic technique of urethral pressure profilometry is discussed and its contribution as an investigative tool reviewed.
本文综述了对尿道括约肌机制功能不全（SMI）所致尿失禁病理生理学理解的进展。SMI是一种多因素疾病；与能自主控制排尿的母犬相比，患病母犬的尿道较短，尿道张力降低，膀胱颈位置更靠尾侧。在SMI病因学中被认为重要的其他因素包括绝育、品种、体型、断尾和肥胖。对SMI理解的最新进展大多来自对正常和患病母犬的放射学和尿动力学研究。本文讨论了尿道压力测定的尿动力学技术，并综述了其作为一种调查工具的作用。
