Stress incontinence is an involuntary loss of urine that occurs during physical activity, such as coughing, sneezing, laughing, or exercise.
The ability to hold urine and control urination depends on the normal function of the lower urinary tract, the kidneys, and the nervous system. You must also have the ability to recognize and respond to the urge to urinate.
The average adult bladder can hold over 2 cups (350ml - 550 ml) of urine. Two muscles are involved in the control of urine flow:
In stress incontinence, the sphincter muscle and the pelvic muscles, which support the bladder and urethra, are weakened. The sphincter is not able to prevent urine flow when there is increased pressure from the abdomen (such as when you cough, laugh, or lift something heavy).
Stress incontinence may occur as a result of weakened pelvic muscles that support the bladder and urethra or because of a malfunction of the urethral sphincter. The weakness may be caused by:
Stress urinary incontinence is the most common type of urinary incontinence in women.
Stress incontinence is often seen in women who have had multiple pregnancies and vaginal childbirths, and whose bladder, urethra, or rectal wall stick out into the vagina (pelvic prolapse).
Risk factors for stress incontinence include:
The main symptom of stress incontinence is involuntary loss of urine. It may occur when:
The health care provider will perform a physical exam, including a:
In some women, a pelvic examination may reveal that the bladder or urethra is bulging into the vaginal space.
Tests may include:
The health care provider may also measure the change in the angle of the urethra when at rest and when straining (Q-tip test). An angle change of greater than 30 degrees often means there is significant weakness of the muscles and tissues that support the bladder.
Treatment depends on how severe the symptoms are and how much they interfere with your everyday life.
The doctor may ask that you stop smoking (if you smoke) and avoid caffeinated beverages (such as soda) and alcohol. You may be asked to keep a urinary diary, recording how many times you urinate during the day and night, and how often urinary leaking occurs.
There are four major categories of treatment for stress incontinence:
Examples of behavior changes include:
PELVIC FLOOR MUSCLE TRAINING
Pelvic muscle training exercises (called Kegel exercises) may help control urine leakage. These exercises improve the strength and function of the urethral sphincter.
Some women may use a device called a vaginal cone along with pelvic exercises. The cone is placed into the vagina, and the woman tries to contract the pelvic floor muscles in an effort to hold it in place. The device may be worn for up to 15 minutes. This procedure should be done two times a day. Within 4 - 6 weeks, most women have some improvement in their symptoms.
Biofeedback and electrical stimulation may be helpful for those who have trouble doing pelvic muscle training exercises. These two methods can help you identify the correct muscle group to work. Biofeedback is a method that helps you learn how to control certain involuntary body responses.
Electrical stimulation therapy uses low-voltage electrical current to stimulate and contract the correct group of muscles. The current is delivered using an anal or vaginal probe. The electrical stimulation therapy may be done at the doctor's office or at home.
Treatment sessions usually last 20 minutes and may be done every 1 - 4 days. Newer techniques are being investigated, including one that uses a specially designed electromagnetic chair that causes the pelvic floor muscles to contract when the patient is seated.
Medicines tend to work better in patients with mild to moderate stress incontinence. There are several types of medications that may be used alone or in combination. They include:
Estrogen therapy can be used to improve urinary frequency, urgency, and burning in postmenopausal women. It also can improve the tone and blood supply of the urethral sphincter muscles.
However, whether estrogen treatment improves stress incontinence is controversial. Women with a history of breast or uterine cancer usually should NOT use estrogen therapy for the treatment of stress urinary incontinence.
Surgical treatment is only recommended after the exact cause of the urinary incontinence has been determined. Most of the time, your doctor will try bladder retraining or Kegel exercises before considering surgery.
Most health care providers advise their patients to try other treatments before having surgery.
Depending on the success of treatment and other medical problems the person may have, some people may require a urinary catheter to drain urine from the bladder.
Behavioral changes, pelvic floor exercise therapy, and medication usually improve symptoms rather than cure stress incontinence. Surgery can cure most carefully selected patients.
Treatment does not work as well in people with:
Complications are rare and usually mild. They can include:
The condition may affect or disrupt social activities, careers, and relationships.
Call for an appointment with your health care provider if you have symptoms of stress incontinence and they are bothersome.
Performing Kegel exercises (tightening the muscles of the pelvic floor as if trying to stop the urine stream) may help prevent symptoms. Doing Kegel exercises during and after pregnancy can decrease the risk of developing stress urinary incontinence after childbirth.
Incontinence - stress