What is it?
Coronary arteries can become blocked or narrowed from a buildup of cholesterol, cells, or other substances called plaque on the artery walls. This can reduce blood flow to your heart and cause chest discomfort. Sometimes a blood clot can completely block blood flow, leading to a heart attack.
Angioplasty may be performed during cardiac catheterization to open blocked arteries and restore blood flow to your heart muscle. It is a nonsurgical procedure performed by threading a catheter (thin tube) through a small puncture in a leg or arm an artery to the heart. The blocked artery is opened by inflating a tiny balloon on the end of the catheter. The doctor may also place a small mesh tube called a stent in your artery to help keep the it open.