Patient Forms

Urodynamic Instructions

About the Procedure 

  • A urodynamic study is a procedure used to show the anatomy and function of the lower urinary tract.  This test uses a special urethral catheter to slowly fill the bladder with X-ray dye (or sterile water) while monitoring bladder pressure.  This test also requires electrode stickers (called EMGs) and a rectal tube to be placed.  From start to finish, urodynamics usually takes about an hour to an hour and a half to complete, but can vary depending on the size of your child’s bladder.


  • There are no eating or drinking restrictions.  If your child is toilet trained, they should come to the test with a full bladder.  They will be asked to urinate in a portable toilet to measure the flow of their urine (called a Flowrate).  For this aspect of the test, it is beneficial to have your child drink at least 8 ounces of water about 60 minutes before their scheduled appointment.

Special Instructions 

  • Must come with a full bladder for the FLOWRATE. (See above paragraph for instructions)
  • Have their urine checked14 days before their procedure. (See below for instructions)
  • Constipation management.  If your child is constipated and not currently being treated for this condition, please contact our urodynamic nurse to begin treatment one week prior to your urodynamic appointment.
  • If your child was taking a bladder relaxant medication (ie. Ditropan, Detrol), they may be instructed to stop this medication 2 days before the procedure.  If you are unsure whether this medication needs to be discontinued, contact our urodynamic nurse.
  • Bring catheterization or voiding log.
  • One parent or guardian, who is not pregnant, may be in the room with their child during the procedure.  Children under the age of 18 who are not getting the test will not be allowed in the procedure room.  If you must bring other children to the appointment, please make arrangements for them to be supervised as they will have to wait in the waiting area while the procedure is taking place.  It is best to explain this test to your child beforehand so that they know what to expect.  If you have any questions please feel free to call 352.273.7995 to speak with our urodynamics nurse.  The urodynamic nurse is often in a procedure, but if you leave a message, they will return your call as soon as possible.
  • It is very important if you are unable to make your appointment that you call.  Urodynamics can take 8 weeks to get an appointment depending on the doctors availability. Please plan accordingly.

Getting a Urine Culture

  • If your child has a risk of infection, it is important to get your child’s urine checked before urodynamics.  If your child is infected at the time of this procedure, we will have to reschedule your child’s urodynamics.  However, if we are aware of the infection in time, we can treat your child and may not have to reschedule.

Call our Office to Schedule a Urine Culture

  • When you call, we will send an order to the lab you specify or you can come to our clinic and we will test the urine here.  If there is a sign of infection, we will start a treatment dose of antibiotics and send the urine for a culture and sensitivity test.  Based on those findings we will let you know how to proceed.  It generally takes 24-48 hours for results of urine cultures.

Urodynamics Nurse Practitioner

  • Contact:  Lindsay Rohan at 352.273.7995

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Elimination Diet

Some children’s bladders are very sensitive to certain foods/drinks and can develop bladder spasms and uninhibited contractions as a consequence.  This is a list of foods/drinks that should be eliminated from the diet in any child who has bladder problems:

  • Caffeine (ie. Soda, coffee, tea)
  • Carbonation (ie. Coke, Pepsi, 7up, Sprite, etc. or diet drinks even if caffeine-free)
  • Artificial colors (ie. Koolaid, Hawaiian punch, Gatoraide, Poweraide)
  • Citric acid (orange juice, lemonade, grapefruit juice, etc.)
  • Avoid vitamins with artificial colors and/or Vitamin C
  • Avoid milk and milk products after noon.  No after dinner ice cream, no heavily sugared foods or candy.

These drinks are OK:

  • Water
  • Cranberry Juice
  • Nectars (peach, pear, apricot)
  • Apple Juice
  • Natural juices without citric acid or artificial additives

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