The standard test will typically take less than an hour. In more complex cases, the exam may last for several hours. In some cases, the doctor may see an abnormality during the test that can be corrected during the exam. For example, a procedure called angioplasty is sometimes used to open up clogged arteries. This involves inserting tiny tools through the catheter that can widen or open the area of blockage.
Special preparation is needed before the test.
A brief physical exam is done to evaluate pulses in the groin and legs. If a person has a weak pulse in the groin, a different artery will be used to insert the catheter. A review of the person's medical and surgical history is also needed. A woman of childbearing age will be screened for pregnancy , usually with a urine or blood pregnancy test. This is done because the radiation from the test could harm an unborn child.