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Urodynamic assessment is a highly specialised and sophisticated method of making a scientifically accurate diagnosis of the cause of incontinence. The urodynamic recording system, which measures all the important functions of the bladder, is connected to a computer. This is used to measure, integrate and correlate urine flow rate, bladder capacity, and muscular and nervous control. This assessment is relatively inexpensive, takes approximately 45 minutes, does not require the use of drugs and is painless.


By using small sized catheters in the urinary bladder, urethra, and rectum, the fluid is filled up in the bladder and pressures are monitored to get a feel about the lower urinary function. The tubes are connected to machines and computers calculate various pressures and guides about disease entities.

Urodynamic Computer

Urodynamic computer

It is not advisable to take the test in case of urinary infection.

The principle investigations are

    Possible diagnosis
  • Uroflow
    Frequency, nocturia, poor flow
    Bladder outlet obstruction
  • Pressure flow
    Frequency, nocturia, poor flow
    Bladder outlet obstruction
  • Cystometry
    Frequency, urgency
    Detrusor instability
  • Urethral closure pressure
    Genuine stress incontinence
  • Ambulatory urodynamics
    Frequency, urgency pointing to unstable bladder but not shown on staticurodynamics
    Detrusor instability, Genuine stress incontinence

Detection of abnormalities

Urodynamic assessment accurately detects most abnormalities. Depending on the diagnosis, the treatment recommended may include certain drugs, special pelvic floor exercises, physiotherapy or possible surgery.

Urodynamic assessment

In most cases, a single visit is all that is required. With the extremely accurate diagnosis and the provision of recommended treatment, most people should find that their problems, if not totally solved, are markedly improved.

Arrange an appointment for urodynamic assessment

You can arrange an appointment for urodynamic assessment through your general practitioner or, if you are under the treatment of a gynaecologist or urologist, they can organise the tests for you. As some women experience a certain degree of discomfort with their periods, it is advisable not to attend during menstruation.

Points of interest

  • The procedure is mostly performed as an outpatient test. You will have to give a urine sample prior to your test.
  • You must sign an informed consent.
  • Make sure that there is no urinary infection. If UTI is detected on a urinary examination, procedure is postponed and appropriate antibiotics are given.
  • It usually takes 30 to 45 minutes for the procedure.
  • Patient empties the bladder prior to the procedure.
  • Patents are usually given 6 doses of antibiotics.

Other Diagnosis/Screening