Coronary Angioplasty: How a Blocked Heart Artery Is Reopened

When a coronary artery narrows, the amount of blood reaching the heart muscle decreases, which can lead to angina. If the vessel becomes completely blocked, the result may be a myocardial infarction. The good news is that, in many cases, blood flow can be restored without the need for traditional open-heart surgery.

The solution is coronary angioplasty, a minimally invasive procedure. Doctors insert a catheter fitted with a very small balloon, which they guide to the site of the narrowed artery. Once in position, the balloon is inflated to widen the blood vessel. In most cases, a stent is also fitted — a device that keeps the artery open in the long term. The catheter is introduced through an artery in the wrist or in the groin area.

The procedure can be performed as an emergency intervention in the event of a heart attack, or it can be scheduled electively for certain forms of coronary artery disease.

Once a stent has been implanted, antiplatelet therapy becomes essential, as it prevents the formation of blood clots. At the same time, it remains necessary to manage other risk factors: cholesterol, blood pressure, diabetes, and smoking cessation. It is important to bear in mind that a stent addresses the localised narrowing of the artery, but does not cure the underlying atherosclerotic disease.