Coronary angioplasty, also known as percutaneous coronary intervention (PCI), is a minimally invasive procedure used to treat blocked or narrowed coronary arteries, which can cause chest pain (angina) or a heart attack. During the procedure, a thin catheter with a deflated balloon at its tip is inserted into a blood vessel, typically through the wrist or groin, and guided to the blocked area in the coronary artery. The balloon is then inflated, compressing the plaque and widening the artery to restore blood flow. In some cases, a stent, a small metal mesh tube, is placed in the treated area to keep the artery open. This procedure helps alleviate symptoms, improve blood flow, and reduce the risk of future cardiovascular events, enabling patients to lead healthier lives.