If your doctor has mentioned the word "stent," you may have a lot of questions. What exactly is a stent? Will it hurt? How long will it last? You are not alone — these are among the most common questions patients ask at cardiology clinics across India, including here in Rajkot. This article answers those questions in plain language so you feel informed and confident before any conversation with your cardiologist.
What Is a Coronary Stent?
A coronary stent is a tiny, mesh-like tube — usually made of metal — that is placed inside a narrowed or blocked coronary artery to keep it open. Think of it like a small scaffold that holds the walls of a damaged pipe apart so that blood can flow freely through it.
Coronary arteries are the blood vessels that supply oxygen-rich blood directly to the heart muscle. When fatty deposits (called plaque) build up inside these arteries, the channel narrows — a condition known as coronary artery disease (CAD). If blood flow is significantly reduced or completely blocked, it can cause chest pain (angina) or even a heart attack.
A stent is placed during a procedure called percutaneous coronary intervention (PCI), more commonly known as coronary angioplasty. The cardiologist guides a thin, flexible tube (catheter) through a blood vessel — usually in the wrist or groin — up to the blocked artery, then inflates a tiny balloon to open the blockage, and finally deploys the stent to keep it open.
Why Is a Stent Needed?
Not every blocked artery requires a stent. Your cardiologist will recommend one when:
- A coronary artery is significantly narrowed (usually more than 70%) and causing symptoms
- You are having a heart attack and the artery needs to be opened urgently
- Lifestyle changes and medications alone are not sufficient to control symptoms
- Imaging tests such as a coronary angiogram clearly show a blockage that is suitable for stenting
The decision is always made after a careful review of your symptoms, test results, and overall heart health. In cities like Rajkot, where lifestyle-related heart disease is increasingly common, angioplasty with stenting has become one of the most frequently performed cardiac procedures.
Coronary Stent Types: A Simple Guide
Understanding the different coronary stent types helps you take part in informed discussions with your doctor. Here is a clear breakdown:
1. Bare-Metal Stents (BMS)
Bare-metal stents were the first generation of stents and have been used since the 1990s. They are simple metallic mesh tubes with no coating or medication.
How they help: They effectively prop the artery open and reduce the risk of the artery collapsing again immediately after angioplasty.
Limitation: In some patients, scar tissue can grow through the mesh over the following months — a process called in-stent restenosis — which can narrow the artery again.
Bare-metal stents are still used in specific situations, such as when a patient cannot take blood-thinning medicines for a long period.
2. Drug-Eluting Stents (DES)
Drug-eluting stents are currently the most widely used coronary stent type worldwide, including in most interventional cardiology centres in Gujarat. They look similar to bare-metal stents but are coated with a medication that is slowly released into the artery wall over weeks or months.
How they help: The drug prevents scar tissue from forming inside the stent, significantly reducing the chance of restenosis compared to bare-metal stents.
Key consideration: Because the drug slows down the healing of the artery lining, patients typically need to take dual antiplatelet therapy (DAPT) — usually aspirin plus another blood-thinning medicine — for a period recommended by their cardiologist. This is important to prevent a rare but serious complication called stent thrombosis (blood clotting inside the stent).
There are now second- and third-generation drug-eluting stents that use thinner struts, more biocompatible polymers, and more refined drug coatings, all designed to improve safety and comfort over time.
3. Bioresorbable Vascular Scaffolds (BVS) / Dissolving Stents
Bioresorbable scaffolds are an exciting area of ongoing development. These stents are designed to gradually dissolve over one to three years after being placed, leaving behind a natural, stent-free artery.
How they help: The idea is to provide temporary support while the artery heals, and then disappear — potentially restoring more natural vessel function in the long run.
Current status: While promising, bioresorbable scaffolds are still being refined. Current evidence suggests they are most suitable for specific patient profiles and artery types. Your cardiologist will advise whether this option is appropriate for you.
4. Covered Stents (Stent Grafts)
Covered stents have a fabric or polymer layer wrapped around the metallic mesh. They are used in more specialised situations, such as sealing a perforated coronary artery or managing certain aneurysms. These are less commonly placed compared to standard drug-eluting stents.
Comparing Coronary Stent Types at a Glance
| Stent Type | Coating | Main Advantage | Typical DAPT Duration |
|---|---|---|---|
| Bare-Metal Stent (BMS) | None | Lower cost, shorter DAPT | 4–6 weeks |
| Drug-Eluting Stent (DES) | Medicated polymer | Lower restenosis rate | 6–12 months (or longer) |
| Bioresorbable Scaffold (BVS) | Dissolves over time | Temporary support, artery restored | 12+ months |
| Covered Stent | Fabric/polymer layer | Seals perforations/aneurysms | Varies |
Note: DAPT duration is always individualised. Follow your cardiologist's specific recommendation.
What Happens During the Stent Procedure?
Here is a brief walk-through so you know what to expect:
- Preparation: You will receive a local anaesthetic at the access site (usually the wrist). The procedure is performed under mild sedation — most patients remain awake but relaxed.
- Catheter insertion: A thin catheter is guided through the artery to the heart.
- Balloon inflation: A small balloon at the tip of the catheter is inflated to open the blockage.
- Stent deployment: The stent, mounted on the balloon, expands and locks into place against the artery wall.
- Confirmation: The cardiologist uses X-ray imaging (fluoroscopy) to confirm the stent is correctly positioned and the artery is open.
The procedure typically takes 30 minutes to an hour, though this varies. Many patients are able to go home within one to two days.
Life After a Stent: Key Things to Remember
Receiving a stent is often just the beginning of the journey. Here is what matters most after the procedure:
- Take your medicines exactly as prescribed. Blood thinners and other cardiac medicines protect your stent and your heart. Never stop them without speaking to your cardiologist.
- Attend all follow-up appointments. Regular check-ups allow your doctor to monitor your recovery and adjust treatment if needed.
- Adopt a heart-healthy lifestyle. A diet low in saturated fats and salt, regular physical activity (such as daily walks), not smoking, and managing stress all support long-term results.
- Know the warning signs. If you experience chest pain, breathlessness, or dizziness after the procedure, contact your cardiologist promptly.
Key Takeaways
- A coronary stent is a small mesh tube placed in a narrowed artery to restore blood flow to the heart.
- The main coronary stent types are bare-metal stents, drug-eluting stents, bioresorbable scaffolds, and covered stents — each suited to different clinical situations.
- Drug-eluting stents are the most commonly used today because they significantly reduce the risk of the artery narrowing again.
- Taking prescribed blood-thinning medicines as directed is critical after stenting.
- Lifestyle changes — healthy diet, regular exercise, no smoking — are just as important as the procedure itself for long-term heart health.
- The right stent type for you depends on your individual anatomy, medical history, and other factors — always a decision made together with your cardiologist.
Every heart is different, and the choice of stent type is a personalised decision. If you have questions about coronary artery disease, angioplasty, or stent options, consider booking a consultation with a qualified interventional cardiologist — early conversations can make a meaningful difference to your heart health.
Frequently asked questions
- What is the difference between a bare-metal stent and a drug-eluting stent?
- A bare-metal stent is a plain metallic mesh tube with no coating, while a drug-eluting stent is coated with a medication that is slowly released to prevent scar tissue from forming inside the stent. Drug-eluting stents have a lower risk of the artery narrowing again (restenosis) but generally require a longer course of blood-thinning medicines.
- How long does a coronary stent last?
- Metallic stents (both bare-metal and drug-eluting) are permanent implants designed to remain in the artery for life. Bioresorbable scaffolds, on the other hand, are designed to dissolve over one to three years. The long-term success of any stent depends significantly on taking prescribed medications and maintaining a heart-healthy lifestyle.
- Is the coronary stent procedure safe?
- Coronary angioplasty with stenting is a well-established procedure with a strong safety record. Like any medical procedure it carries some risks, which your cardiologist will discuss with you beforehand based on your individual health. For most suitable patients, the benefit of restoring blood flow to the heart outweighs the procedural risks.
- Do I need to change my lifestyle after getting a coronary stent?
- Yes — lifestyle changes are an essential part of recovery and long-term heart health. A heart-healthy diet, regular physical activity such as daily walking, quitting smoking, managing blood pressure and diabetes, and taking all prescribed medications are all important steps after receiving a stent.