CORONARY ANGIOGRAPHY: WHAT ARE THE RISKS AND POSSIBLE COMPLICATIONS?
In experienced hands the procedure is very safe. However, being an invasitve procedure it does carry a small risk. The world figures for a serious complication during angiography are less than 0.1%. The risk may be higher for patients who a very ill, have difficulty in breathing, or whose arteries have many severe blockage
Some of the possible complications are listed below. You must not let this I scare you, since these are extremely rare.
bleeding from the groin
blood clot formation (hematoma) in the groin
bleeding elsewhere (abdomen, brain, etc.)
dye reaction
disorders of heart rhythm
clotting of the leg artery
weakness of the leg artery leading to a pseudoaneurysm (swelling) in the groin, which may need surgery
embolisation of a blood clot to the brain, which may lead to temporary permanent paralysis
heart attack.
But rest assured that these complications are extremely rare. Moreover, 1 benefits obtained from the information derived during the procedure far outweigh any potential risks.