论文部分内容阅读
压力性尿失禁又称应力性尿失禁,是指患者平时无遗尿现象,而在咳嗽、打喷嚏、大笑等情况,腹压突然增加或作重体力劳动时,尿液不自主地自尿道流出.其发病机理为:膀胱及尿道功能不全.尿道内括约肌由膀胱的平滑肌组成,尿道外括约肌由横纹肌组成.平滑肌由膀胱底部延续而下,其肌纤维分布于膀胱颈部和尿道内口,有前后两部份形成环状结构,起内括约肌作用.正常尿道后角为90°～100°,尿道轴与身体直立时的垂直线所形成的倾斜角度为10°～30°.当膀胱内压升高时,最大静水压作用于膀胱底部,尿道的阻力阻止尿液外流.如因分娩或手术损伤,盆底肌肉松弛和阴道壁脱垂,膀胱底向下向后移位,尿道变短,其倾斜角度可增大至≥90°,尿道平滑肌张力
Stress urinary incontinence, also known as stress urinary incontinence, refers to patients usually no enuresis, cough, sneeze, laughter and other circumstances, a sudden increase in abdominal pressure or heavy manual labor, urine involuntary discharge from the urethra The pathogenesis of bladder and urinary tract dysfunction: urethral sphincter consists of bladder smooth muscle, urethral sphincter composed of striated muscle smooth muscle from the bottom of the bladder continued down, the muscle fibers distributed in the bladder neck and urethral mouth, front and back The two parts form a ring structure, the role of the internal sphincter.The normal posterior angle of the urethra is 90 ° to 100 °, the vertical axis of the urethral axis and the body formed when the tilt angle of 10 ° ~ 30 ° when the bladder pressure High, the maximum hydrostatic pressure on the bottom of the bladder, urethral resistance to prevent the outflow of urine.As a result of childbirth or surgical injury, pelvic floor muscle relaxation and vaginal wall prolapse, the bladder bottom to the posterior displacement, the urethra shorter, The tilt angle can be increased to ≥ 90 °, urethral smooth muscle tension