Balloon angioplasty of the coronary artery, or percutaneous transluminal coronary angioplasty (PTCA), is a non-surgical procedure that relieves narrowing and obstruction of the arteries to the muscle of the heart (coronary arteries). PTCA, is now referred to as percutaneous coronary intervention, or PCI, as this term includes the use of balloons, stents, and atherectomy devices.