A special dye is injected through the catheter into your bloodstream. AngiographyĬoronary angiography involves a small tube being inserted into an artery and threaded through to coronary arteries near your heart. Note: If you are taking medication for your heart, it is important to talk to your doctor, nurse or other health professional about whether you need to stop taking these medications before having a heart test, and how soon you should start taking it again after the test.
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