What Are the Risks of Coronary Angiography?

Image Caption : Doctors Performing an Angiogram : Doctors use angiograms to pinpoint blockages in the heart's blood circulation. An X-ray contrast dye is injected into the coronary arteries, and fast-moving X-ray images are monitored on a screen while the dye flows through the arteries. The procedure is used to help diagnose conditions like myocardial infarction, vascular occlusion, and calcified atherosclerotic plaques.

What Are the Risks of Coronary Angiography?

Coronary angiography is a common medical test. It rarely causes serious problems. However, complications can include:

  • Bleeding, infection, and pain at the catheter insertion site.
  • Damage to blood vessels. Rarely, the catheter may scrape or poke a hole in a blood vessel as it's threaded to the heart.
  • An allergic reaction to the dye that's used during the test.

Other, less common complications include:

  • Arrhythmias (irregular heartbeats). These irregular heartbeats often go away on their own. However, your doctor may recommend treatment if they persist.
  • Kidney damage caused by the dye that's used during the test.
  • Blood clots that can trigger a stroke, heart attack, or other serious problems.
  • Low blood pressure.
  • A buildup of blood or fluid in the sac that surrounds the heart. This fluid can prevent the heart from beating properly.
  • As with any procedure involving the heart, complications can sometimes be fatal. However, this is rare with coronary angiography.

The risk of complications is higher in people who are older and in those who have certain diseases or conditions (such as chronic kidney disease and diabetes).


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