26/11/2025
What Is a Heart Stent?
A heart stent is a small metallic or plastic mesh-like tube that is placed inside narrowed heart blood vessels (coronary arteries) to keep them open and allow normal blood flow.
When fatty substances, cholesterol, and calcium (plaque) build up inside the coronary arteries, the vessels become narrowed and blood cannot reach the heart properly. This condition is called Coronary Artery Disease.
In such cases, doctors perform a procedure called angioplasty:
1. A thin tube (catheter) is inserted through a blood vessel in the leg or arm and guided toward the heart.
2. A small balloon at the end of the catheter is inflated at the narrowed part of the artery.
3. A stent placed around the balloon expands as the balloon inflates and attaches to the artery walls.
4. The balloon is removed, but the stent remains in place to keep the artery open.
Functions of a Stent
👉 Prevents the artery from narrowing again
👉 Reduces chest pain (angina)
👉 May lower the risk of a heart attack
👉Restores normal blood flow
Types of Stents
1. Bare-Metal Stent (BMS):
Made only of metal.
2. Drug-Eluting Stent (DES):
Coated with medication to prevent re-narrowing of the artery (restenosis).
Translation & Compilation:
Dr. Mohammad Emal Momand — Specialist in Internal Medicine, Pediatrics, and Family Medicine