Each year, doctors in America perform about a million angioplasty procedures, using a balloon-tipped catheter to open clogged arteries and relieve chest pain.
Clinton underwent a procedure called angioplasty, the hospital said, in which a ballooncatheter is threaded through an artery to the blocked vessel in the heart.
Stents are used in angioplasty, a procedure in which a balloon is inserted into a heart artery via a catheter and used to reopen it, alleviating chest pain, allowing patients to walk and treating heart attacks.