据估计。10%的美国妇女在一生中罹患不同程度的尿失禁,老年妇女尤为多见。随着人们平均年龄的增高,发病率仍在继续上升。控制排尿依赖于很多因素:如下尿路的解剖关系,神经的控制和全身条件对泌尿系统直接和间接的影响。 排尿的生理学 控制排尿依赖于尿道闭合和膀胱逼尿机能间的平衡。前者涉及尿道的张力:包括它的弹力性,平滑肌或横纹肌,供应尿道的血管成分及尿道括约肌α受 It is estimated. 10% of American women have varying degrees of urinary incontinence in their lifetime, especially in older women. As people’s average age increases, the incidence continues to rise. Control of micturition depends on many factors: the anatomy of the urinary tract, the control of the nerves, and the direct and indirect effects of general conditions on the urinary system. Physiological control of urination Urination depends on the balance between urethral closure and bladder detrusor function. The former relates to the tension of the urethra: including its elasticity, smooth muscle or striated muscle, the supply of urethral vascular composition and urinary sphincter α by