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VCUG Side Effects

A voiding cystourethrogram (VCUG) examines the bladder and urethra by x-ray while the bladder is emptying. Doctors use a VCUG to look for abnormalities in the structure or function of the bladder and urethra. This test usually is performed in the radiology department of a hospital on an outpatient basis. It uses contrast dye for better pictures of the urinary structures. Side effects are usually minimal.

  1. Preparation

    • You will be asked to remove all jewelry, sign consent forms and provide your medical history including information about allergies to medications. It is not necessary to fast before a VCUG unless your doctor gives you specific instructions to do so.

    Sedation

    • For adults, sedation is not necessary for a VCUG. Some doctors recommend sedation for young children for comfort and keep the child still during the procedure.

    Procedure

    • As you lie on the table, a thin tube called a catheter will be inserted through the urethra into the bladder. Saline with contrast dye will flow into the bladder and continuous x-rays will be taken of the full bladder and of the bladder as it voids.

    Side Effects in Adults

    • Possible side effects of a VCUG include an allergic reaction to the contrast dye and irritation while urinating after the test due to the catheter.

    Side Effects in Children

    • In addition to the possible side effects for adults, children may experience some anxiety after a VCUG due to the catheterization and overall hospital experience. Explaining the test beforehand can help to alleviate this anxiety.

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