How To Prepare continued...
You may need to stop eating and drinking for 8 to 12 hours
before the IVP. You also may need to take a laxative the evening before the test
(and possibly have an enema the morning of the test) to make sure that your
bowels are empty.
If you are breast-feeding, use formula for 1 to
2 days after the test.
This test is often done in children to see if they may have an abnormal backflow of urine (vesicoureteral reflux). Prepare your child for exams and tests that are needed. Doing so will help your child understand what to expect and can help reduce fears.
How It Is Done
An intravenous pyelogram (IVP) is
usually done by a radiology technologist. The IVP pictures are interpreted by a
doctor who specializes in interpreting imaging tests (radiologist).
You will need to remove any
jewelry that might interfere with the X-ray picture. You will need to take off
all or most of your clothes, and you will be given a cloth or paper covering to
use during the test. You will be asked to urinate just before the test
You will lie on your back on an X-ray table. An X-ray
picture of your belly will be taken and reviewed by the radiologist before the
next part of the test begins.
The injection site on your arm will
be cleaned and the contrast material will be injected into a vein on the inside
of your elbow. The dye travels through the bloodstream, is filtered out by the
kidneys, and passes into the urine. The urine then flows into the tubes
(ureters) that lead to the bladder.
X-ray pictures are taken
several minutes apart as the dye goes through the urinary tract. Each picture
is developed right away. Sometimes more pictures are taken based on earlier
ones. You may be asked to turn from side to side or to hold several different
positions so the radiologist can take a complete series of X-rays.
During IVP, a compression device may wrapped around your belly to keep
the dye in the kidneys. The most common compression device is a wide belt
containing two inflated balloons that push in on either side of your belly to
block the passage of dye through the ureters. If you have recently had
abdominal surgery or have an abdominal disorder, the band will not be
A special type of X-ray technique called
fluoroscopy may also be used during IVP. During
fluoroscopy, a continuous X-ray beam is used to display a moving image on a
IVP usually takes about an hour. After the test is
over, you will need to drink plenty of liquids to help flush the contrast
material out of your body.