Urinary Retention (cont.)
In this Article
How common is urinary retention?
Urinary retention in men becomes more common with age.
Urinary retention in women is less common, though not rare. The incidence of urinary retention in women has not been well studied because researchers have primarily thought of urinary retention as a man's problem related to the prostate.
What are the symptoms of urinary retention?
The symptoms of acute urinary retention may include the following and require immediate medical attention:
The symptoms of chronic urinary retention may include
Some people with chronic urinary retention may not have symptoms that lead them to seek medical care. People who are unaware they have chronic urinary retention may have a higher chance of developing complications.
When to Seek Medical Care
A person who has any of the following symptoms should see a health care provider right away:
How is urinary retention diagnosed?
A health care provider diagnoses acute or chronic urinary retention with
A health care provider may use the following medical tests to help determine the cause of urinary retention:
A health care provider may suspect urinary retention because of a patient's symptoms and, therefore, perform a physical exam of the lower abdomen. The health care provider may be able to feel a distended bladder by lightly tapping on the lower belly.
Postvoid Residual Measurement
This test measures the amount of urine left in the bladder after urination. The remaining urine is called the postvoid residual. A specially trained technician performs an ultrasound, which uses harmless sound waves to create a picture of the bladder, to measure the postvoid residual. The technician performs the bladder ultrasound in a health care provider's office, a radiology center, or a hospital, and a radiologist -- a doctor who specializes in medical imaging -- interprets the images. The patient does not need anesthesia.
A health care provider may use a catheter -- a thin, flexible tube -- to measure postvoid residual. The health care provider inserts the catheter through the urethra into the bladder, a procedure called catheterization, to drain and measure the amount of remaining urine. A postvoid residual of 100 mL or more indicates the bladder does not empty completely. A health care provider performs this test during an office visit. The patient often receives local anesthesia.
Cystoscopy. Cystoscopy is a procedure that requires a tubelike instrument, called a cystoscope, to look inside the urethra and bladder. A health care provider performs cystoscopy during an office visit or in an outpatient center or a hospital. The patient will receive local anesthesia. However, in some cases, the patient may receive sedation and regional or general anesthesia. A health care provider may use cystoscopy to diagnose urethral stricture or look for a bladder stone blocking the opening of the urethra.
CT scans. CT scans use a combination of x rays and computer technology to create images. For a CT scan, a health care provider may give the patient a solution to drink and an injection of a special dye, called contrast medium. CT scans require the patient to lie on a table that slides into a tunnel-shaped device where a technician takes the x rays. An x-ray technician performs the procedure in an outpatient center or a hospital, and a radiologist interprets the images. The patient does not need anesthesia. A health care provider may give infants and children a sedative to help them fall asleep for the test. CT scans can show
Urodynamic tests. Urodynamic tests include a variety of procedures that look at how well the bladder and urethra store and release urine. A health care provider may use one or more urodynamic tests to diagnose urinary retention. The health care provider will perform these tests during an office visit. For tests that use a catheter, the patient often receives local anesthesia.
Electromyography. Electromyography uses special sensors to measure the electrical activity of the muscles and nerves in and around the bladder and sphincters. A specially trained technician places sensors on the skin near the urethra and rectum or on a urethral or rectal catheter. The sensors record, on a machine, muscle and nerve activity. The patterns of the nerve impulses show whether the messages sent to the bladder and sphincters coordinate correctly. A technician performs electromyography in a health care provider's office, an outpatient center, or a hospital. The patient does not need anesthesia if the technician uses sensors placed on the skin. The patient will receive local anesthesia if the technician uses sensors placed on a urethral or rectal catheter.
Medically Reviewed by a Doctor on 8/13/2014
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