A urodynamic study (UDS) test is performed to get more information about your urination process and to check if your bladder muscles are working well. We are trying to reproduce your urinary symptoms during the study.
A UDS includes cystometry and uroflowmetry in the same sitting. Video urodynamic study (VUDS) involves the use of fluoroscopy to view the whole urination cycle as we are doing the test. The traces produced by the UDS/VUDS can be viewed on the screen of the computer and this allows us to interpret the results of the study.
We perform these studies to understand your condition better so that the right treatments/advice can be given to you.
We may need to check in advance with a urine sample that no infection is present. You may need to stop some medicine before the test. Please check with your doctor. The tests take about 30-60 minutes to complete. A VUDS will involve small doses of radiation.
If you have an infection, you should be treated with antibiotics before the urodynamic study can take place. Please bring the results of the urinary test to your appointment if it is not done at the hospital.
Please complete the bladder diary before the study. It contains very useful information for the urologist before the study.
Please arrive 30 minutes before your study and be assured that you can have a meal before the study.
UDS/VUDS is generally a safe and well-tolerated study.
Sudden high blood pressure (autonomic dysreflexia)- Rare
Some patients with neurological conditions (eg spinal cord injury) have a risk of sudden high blood pressure (autonomic dysreflexia) during UDS. It is a sudden and exaggerated automatic response to various stimuli in patients with spinal cord injury or spinal dysfunction. Sudden high blood pressure can be life-threatening if not properly managed. We will need to closely monitor the blood pressure of these patients during the tests. Please let your urologist know if you have any spinal cord injuries or concerns.
Right after the tests are done, your doctor will discuss the results with you, and any further treatment you may need. Drink plenty of liquids after the tests to reduce discomfort while urinating.