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The intravenous urogram (IVU) is also sometimes known as an IVP (intravenous pyelogram). It is an x-ray investigation of the urinary tract (the kidneys, ureters and bladder).
In preparation for the procedure, you should take a laxative on each of the two evenings prior to appointment. Have nothing to eat or drink for 2 hours before.
The investigation includes an intravenous injection of contrast medium. This fluid is opaque to x-rays. It is concentrated and excreted by the kidneys and fills the remainder of the urinary tract.
Modern contrast medium is safe. Very occasionally, individuals may develop an allergic reaction to it. This reaction usually takes the form of a skin rash or wheezing, which can be quickly reversed with medication. More severe allergic reactions are extremely rare. The likelihood of suffering an allergic reaction should not be of concern to you but if you have ever had an allergic reaction to contrast medium before, you should let the radiology staff know before your IVU. Allergy to other substances does not significantly increase the likelihood of your being allergic to contrast medium but if you have a strong allergic history you should inform our staff.
Before the contrast medium is injected a plain x-ray film of your abdomen will be taken. This is mainly to detect stones in the urinary tract. Following the injection a series of films will be taken over a period of about 30 minutes. This series might include tomograms, which are "slice" x-rays of the kidneys taken while both the x-ray tube and the film are moving in an arc above and below you.
At one stage in the procedure a compression band might be strapped around your lower abdomen. This helps to fill the tubes draining the kidneys, allowing us to see them in better detail.
At the end of the examination you will be asked to empty your bladder as completely as possible, after which a final film of the empty bladder will be taken.
If you have any unanswered questions about the procedure please don't hesitate to ask our staff.
If you have had an IVU or kidney ultrasound previously, please bring the films with you. |
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