A 58-year-old man is undergoing cardiac catheterization for evaluation of chest pain symptoms. He is worried about the risks, and as part of obtaining informed consent, you advise him about the risks and benefits of the procedure. Which of the following aspects of angiography is true?
it is contraindicated in the presence of cyanosis it is considered noninvasive it is generally performed with cardiopulmonary bypass it may cause renal failure