It is often necessary to use the bathroom often to avoid accidental urination. It is believed that stress incontinence occurs when abdominal pressure upon the bladder is not balanced by equal pressure upon the urethra.
Herniation causes the angle of the urethra to change, which can cause the urethra to remain open.
If the urethra is not pressed shut, urine can leak out. Type I patients also have little or no sign of cystocele . Type II refers to stress incontinence in which the bladder neck and urethra are closed and very hypermobile, and the urethra descends more than 2 cm during stress that is, the angle of the urethra is increased. Type III , or intrinsic sphincter deficiency, refers to severe stress incontinence in which urethral position and support are not factors, but the urethral sphincter is very weak. Type III patients often have undergone a previous, failed surgical procedure.