Angioplasty is a medical procedure used to open blocked or narrowed arteries. It involves inserting a catheter with a balloon attached into an artery and then inflating the balloon to widen the passage. The most common form of angioplasty is known as percutaneous coronary intervention (PCI). This type of angioplasty is used to treat coronary artery disease, which occurs when the arteries that supply oxygen–rich blood to the heart become narrowed or blocked by fatty deposits called plaque.
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