Is it dangerous to do a cardiogram?

Cardiac imaging

is a common method for examining the heart. It requires puncturing the artery of the hand or leg to place a catheter. Any invasive procedure has risks. If the puncture is not performed properly, it may damage local blood vessels or nerves, causing bleeding or nerve damage. Secondly, some patients may be allergic to contrast agents or anesthetics. After injection, allergic reactions may occur. In severe cases, contrast nephropathy may occur.