Intravenous Pyelogram (cont.)
Scott H Plantz, MD, FAAEM
Francisco Talavera, PharmD, PhD
The dyes (also called radio contrast media) are of 2 types: ionic and nonionic. Both types of dye contain iodine but differ in 2 key ways: the rate of adverse reactions and the cost.
Although the overall rate of adverse reactions is relatively low with both, there is a greater incidence of adverse reactions with the less expensive ionic dye than with the nonionic.
- Minor reactions, which are infrequent and do not last long, include flushing, nausea, vomiting, and itching.
- A small percentage of people experience a severe reaction to the dye, such as difficulty breathing, speaking, or swallowing; swelling of the lips and tongue; low blood pressure; or loss of consciousness. People who have had a severe reaction after receiving the dye once should not be exposed to it again.
- Pregnant women should not have an IVP because of the high radiation exposure.
- People with known kidney disease or failure should not have an IVP because the dye can worsen kidney function.
- Elderly people and those with diabetes, high blood pressure, heart disease, or evidence of dehydration are at risk of developing kidney failure following administration of the dye.
- To avoid this complication, the kidney function should be tested with a blood test of the BUN (blood urea nitrogen) and creatinine, and the results should be known before the IVP is performed.
- Those with diabetes and certain others (for
example, women with polycystic ovarian syndrome) who are taking metformin (Glucophage) will have to discontinue this medication for 2 days after the IVP. They should inform their doctor of the test, and the doctor will coordinate their management during that time.
Must Read Articles Related to Intravenous Pyelogram
Blood in the Urine
Blood in the urine is called hematuria. Hematuria may be caused by infection, inflammation, or injury to the urinary system. Treatment of hematuria depends upon...learn more >>