According to the ICS, stress incontinence is defined in terms of a symptom, a sign, and a condition.
The symptom is discussed as the affected person’s complaint of involuntary escape of urine during any type of physical exercise including changing positions, coughing, and sneezing.
The sign denotes demonstrable loss of urine with physical exertion.
The condition of stress incontinence is defined as an “involuntary loss of urine occurring when, in the absence of detrusor contraction, the intravesical pressure exceeds the maximum urethral pressure” (ICS Committee, 1990, p. 17).
The condition is caused by sphincteric weakness or an overactive detrusor provoked by physical exertion.
In stress urinary incontinence, a small amount of urine escapes suddenly when the individual experiences an increase in abdominal pressure that occurs with a sneeze, a cough, or laughter.
Stress incontinence often occurs in women who have given birth, although 28% of young nulliparous women athletes surveyed in one study reported episodes of incontinence during exercise (Nygaard, Thompson, Svengalis, & Albright, 1994).
Stress incontinence is aptly named because the pressure or strain from a laugh or cough results in a loss of urine.
The bladder and urethra are normally held firmly in place by muscles and connecting tissue in the pelvis. When you cough, the pressure inside your abdomen increases, and the pressure pushes on your bladder and urethra. If the supporting pelvic muscles or connecting tissues have been damaged or weakened, they may not be able to withstand the force of the cough. The pressure then forces the urethra to open, resulting in urine leaking out.
Many activities that you ordinarily wouldn’t even think about can cause increased pressure in the abdomen and the bladder. Coughing, straining to lift a heavy piece of luggage, aerobic exercise, or even a hiccup can challenge a woman with this problem.
The anatomical structure of a woman’s short urethra and loss of urethrovesical angle as a result of a decrease in pelvic floor tone make stress incontinence more prevalent in women than in men, although men who have had a prostatectomy or perineal surgery may experience stress incontinence as well. In stress incontinence, a small amount of the urine in the bladder escapes rather than the entire contents of the bladder.
Treatment of Stress Urinary Incontinence
There are a number of both non-pharmacological and pharmacological measures available for the treatment of stress urinary incontinence. The Table below summarizes these treatment measures.
Treatment approach
Management options
Conservative
Behavioral therapy
Electrical stimulation
Treatment of precipitating condition (e.g. cough, atropic vaginitis)
Use of continence aids (e.g. pads and/or undergarments, intravaginal or intraurethral devices
Cardozo L D, Stanton S L. 1980. Genuine stress incontinence and detrusor instability—a review of 200 patients. Br J Obstet Gynaecol 87: 184–90.
De Groat W C 1993. Anatomy and physiology of the lower urinary tract. Urol Clin North Am 20: 383–401.
De Groat W C 1997. A neurologic basis for the overactive bladder. Urology 50 (Suppl 6A): 36–52.
DeLancey J O L 1994. Structural support of the urethra as it relates stress urinary incontinence: the hammock hypothesis. Am J Obstet Gynecol 170: 1713–23.
Eckford S D and Keane D P 1993. Management of detrusor instability. Br J Hosp Med 49: 1282–5.
Fantl J A, Wyman J F, Anderson R L et al 1988. Postmenopausal urinary incontinence: comparison between non-estrogen supplemented and cstrogen supplemented women. Obstet Gynecol 71: 823–8.
Wall L L, Wiksind A K, Taylor P A 1994. Simple bladder filling with a cough stress test compared to subtracted cystometry in the diagnosis of urinary incontinence. Am J Obstet Gynecol 171: 1472-9.
Wyman J G, Choi S C, Harkins S W et al 1988. The urinary diary is evaluation of incontinent women: a test retest analysis. Obstet Gynecol 71:812–7.
Fantl, J.A., Wyman, J.F., McClish, D.K., et al., (1991). Efficacy of bladder training in older women with urinary incontinence. Journal of the American Medical Association, 265, 609–613.
Gundian, J.C., Barrett, D.M., & Parulkar, B.G. (1989). Mayo clinic experience with use of the AMS800 artificial urinary sphincter for urinary incontinence following radical prostatectomy. Journal of Urology, 142, 1459–1461.
Hilton, P., Tweddell, A.L., & Mayne, C. (1990). Oral and intravaginal estrogens alone and in combination with alpha-adrenergic stimulation in genuine stress incontinence. International Urogynecological Journal, 1, 80–86.
Hu, T.W., Igou, J.F., Kaltreider, D.L., et al. (1989). A clinical trial of a behavioral therapy to reduce urinary incontinence in nursing homes: Outcome and implications. Journal of the American Medical Association, 261, 2656–2662.
Light, J.K. & Scott, F.B. (1985). Management of urinary incontinence in women with the artificial urinary sphincter. Journal of Urology, 134, 476–478.
Lockhart, J.L., Bejany, D., & Politano, V.A. (1986). Augmentation cystoplasty in the management of neurogenic bladder disease and urinary incontinence. Journal of Urology, 135, 969–971.
Lowe, D.H., Schertz, H.C., & Parsons C.L. (1988). Urethral pressure profilometry in Scott artificial urinary sphincter. Journal of Urology, 31, 82.
Raz, S., Ehrlich, R.M., Zeidman, E.J., Alarcon, A., & McLaughlin, S. (1988). Surgical treatment of the incontinent female patient with myelomeningocele. Journal of Urology, 139, 524–527.
Rose, M.A., Baigis-Smith, J., Smith, D., & Newman, D. (1990). Behavioral management of urinary incontinence in homebound older adults. Home Health Nurse, 8, 10–15.
Schnelle, J.F., Thraughber, B., Sowell, V.A., et al. (1989). Prompted voiding treatment of urinary incontinence in nursing home patients: A behavior management approach for nursing home staff. Journal of the American Geriatrics Society, 37, 1051–1057.