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Intravenous excretory urography, also known as intravenous pyelography (IVP), is a diagnostic imaging test that is used to evaluate the structure and function of the urinary system. It involves the injection of a contrast dye into a vein in the arm, which then travels through the bloodstream and into the kidneys, ureters, bladder, and urethra. X-ray images are then taken at specific intervals to track the flow of the contrast dye through the urinary system.
IVP is typically used to diagnose conditions such as kidney stones, tumors, and urinary tract obstructions. It can also be used to evaluate the structure and function of the kidneys and urinary system in cases of unexplained abdominal pain, blood in the urine, or abnormal kidney function tests.
Before the procedure, patients may be instructed to avoid food and drink for several hours, and may need to take medications to help prepare the bowel for the test. During the procedure, patients lie on a table while the contrast dye is injected and X-ray images are taken at specific intervals. The procedure typically takes about 30 minutes to complete.
After the procedure, patients may be instructed to drink fluids to help flush the contrast dye out of their system. They may also experience some mild side effects, such as a metallic taste in the mouth or mild nausea.
IVP is generally considered safe, although there is a small risk of allergic reaction to the contrast dye. It is important for patients to inform their healthcare provider if they have a history of allergies or kidney disease, as these conditions may increase the risk of complications.