 A percutaneous coronary intervention (PCI), or coronary angioplasty with stenting, is a non-surgical procedure used to improve the blood flow to the heart.Coronary Angioplasty is indicated for coronary artery disease such as unstable angina, NSTEMI, STEMI and spontaneous coronary artery perforation.PCI for stable coronary disease has been shown to significantly relieve symptoms such as angina, or chest pain, thereby improving functional limitations and quality of life.