Cardiac Stents: How They Work, Risks and Recovery

Cardiac stents are tiny expandable tubes that help keep narrowed coronary arteries open, improving blood flow to the heart muscle. They are usually placed during a minimally invasive procedure called coronary angioplasty or percutaneous coronary intervention (PCI).

Overview: What Are Cardiac Stents?

Cardiac stents are small, expandable mesh tubes placed inside coronary arteries, the blood vessels that supply oxygen-rich blood to the heart muscle. They are used to support an artery after it has been widened with a small balloon during coronary angioplasty. By keeping the artery open, a stent can improve blood flow and help relieve symptoms such as chest pressure or exertional shortness of breath caused by reduced coronary circulation.

Most modern cardiac stents are drug-eluting stents. These stents release a medication gradually into the artery wall to lower the chance that scar tissue will cause the treated area to narrow again. In selected situations, a bare-metal stent may still be considered, but the most appropriate option depends on the person’s artery anatomy, bleeding risk, medicines, and clinical circumstances.

A stent treats a specific narrowed area; it does not cure the underlying process of atherosclerosis, in which fatty deposits and inflammation affect the arteries. Ongoing treatment for coronary artery disease, including medicines and heart-healthy lifestyle measures, remains important after stent placement.

Why a Heart Stent May Be Recommended

A cardiologist may recommend a cardiac stent when tests show a significant narrowing in a coronary artery and opening that artery is likely to improve symptoms or protect heart muscle. Stents may be used for stable angina, when chest discomfort occurs predictably with activity, or urgently during a heart attack caused by a sudden coronary artery blockage.

Not every coronary narrowing needs a stent. Some people can be managed effectively with medicines, risk-factor control, and monitoring. The decision is individualized and may be informed by symptoms, electrocardiogram findings, blood tests, stress testing, coronary CT imaging, and coronary angiography. During angiography, the clinician may also use specialized measurements or imaging to assess whether a narrowing is limiting blood flow.

When disease affects several arteries, involves a major vessel, or is especially complex, other strategies may be more suitable. These can include optimized medical therapy or coronary artery bypass surgery. A heart team discussion can help determine which approach fits the individual’s overall health and coronary anatomy.

How Cardiac Stents Are Placed

Cardiac stents are placed during a catheter-based procedure known as percutaneous coronary intervention (PCI). After cleaning and numbing the skin, the interventional cardiologist inserts a thin flexible tube, called a catheter, into an artery, most often at the wrist and sometimes at the groin. Using X-ray guidance and contrast dye, the catheter is moved carefully to the coronary arteries.

A fine guidewire is passed across the narrowed section. A small balloon is then inflated briefly to widen the artery, and the stent is expanded at the same site. Once expanded, the stent stays in place permanently, acting as a scaffold to support the artery. The balloon and catheters are removed, while a closure device or firm pressure is used at the access site to control bleeding.

The procedure may be planned in advance or performed urgently for a heart attack. Its length varies according to the number and complexity of narrowed arteries, but uncomplicated treatment often takes about an hour. Patients are monitored afterward for heart rhythm changes, chest symptoms, blood pressure, kidney function when relevant, and bleeding at the catheter entry site.

How Serious Is Getting a Stent Put in the Heart?

Getting a cardiac stent is a significant medical procedure because it involves treatment inside an artery supplying the heart. However, it is routinely performed by trained Cardiology Explained: What It Is and How It Helps" class="ahp-ilk">interventional cardiology teams and is generally less invasive than open-heart surgery. For many people, it can quickly restore blood flow and may be lifesaving when used for an acute heart attack.

As with any invasive procedure, there are possible risks. These include bruising or bleeding at the wrist or groin, blood-vessel injury, an allergic reaction to contrast dye, temporary changes in kidney function, abnormal heart rhythms, heart attack, stroke, and, rarely, emergency surgery or death. The likelihood of complications differs according to the urgency of treatment, the extent of heart disease, age, kidney health, diabetes, bleeding risk, and other conditions.

Another important risk is stent thrombosis, a clot forming within the stent. It is uncommon but potentially serious, especially if antiplatelet medicines are stopped too soon. The cardiology team weighs the expected benefit of treatment against the risks and explains what applies to the individual situation before a planned procedure whenever possible.

Are You Awake When a Stent Is Put in Your Heart?

Most people are awake during cardiac stent placement. The access area is numbed with local anesthetic, and medicine may be given through a vein to help the person relax. This is often called conscious or moderate sedation. Patients may feel sleepy and comfortable, but they can usually respond to simple questions and breathe independently.

General anesthesia, in which a person is fully unconscious, is not usually required for a standard coronary stent procedure. It may be considered in uncommon situations, such as when another procedure is being performed, when someone cannot lie still safely, or when critical illness requires more intensive support.

During balloon inflation, some people notice brief chest pressure similar to their usual angina. They should tell the team about any discomfort, breathlessness, nausea, or other symptoms. Continuous monitoring allows the clinical team to respond promptly throughout the procedure.

Is Putting in a Stent a Big Operation?

Putting in a cardiac stent is not considered open-heart surgery. It is a minimally invasive procedure performed through a small puncture in an artery, typically in the wrist or groin. There is no large chest incision, and the heart is not stopped during the usual procedure.

Although it is less invasive than surgery, it should still be treated as an important intervention. It requires specialized equipment, contrast imaging, blood-thinning medicines, monitoring, and careful follow-up. People may need to stay in hospital overnight, particularly after treatment for a heart attack, complex PCI, or when other medical conditions need observation.

For some patterns of coronary artery disease, bypass surgery offers more durable or appropriate treatment than multiple stents. The best approach depends on factors such as the location and number of narrowed arteries, heart pumping function, diabetes, previous procedures, and the person’s preferences after an informed discussion with their care team.

How Long Does It Take to Recover From a Heart Stent?

Recovery after an uncomplicated planned heart stent procedure is often relatively quick. Many people return home the same day or the next day and feel able to do light activities within several days. Recovery can take longer after a heart attack, treatment of multiple arteries, a complication, or when another illness affects strength and mobility.

The wrist or groin may be tender or bruised for a few days. The care team typically advises avoiding heavy lifting, strenuous exercise, and soaking the access site for a short period. Exact restrictions vary according to whether the wrist or groin was used and should be followed as provided by the treating team.

Cardiac rehabilitation can support a safe return to activity through supervised exercise, education, nutrition guidance, and help with risk-factor management. Long-term recovery also includes taking prescribed medicines, attending follow-up appointments, avoiding tobacco, and managing blood pressure, cholesterol, diabetes, sleep, stress, and physical activity. Cardiac rehabilitation may be particularly valuable after a heart attack or coronary intervention.

Medicines, Self-Care and When to Seek Medical Care

After a cardiac stent, many patients need dual antiplatelet therapy: usually aspirin together with another antiplatelet medicine for a period determined by the cardiologist. These medicines reduce the risk of a clot forming in the stent. They should never be stopped, skipped, or changed without medical advice, including before dental work, surgery, or other procedures. Cholesterol-lowering medicines and treatments for blood pressure or diabetes may also be recommended.

Long-term self-care focuses on slowing the progression of coronary artery disease. Helpful measures include not smoking or vaping nicotine, choosing a diet rich in vegetables, fruit, whole grains, legumes, and unsaturated fats, staying physically active as advised, maintaining a healthy weight where appropriate, and taking medicines consistently. A stent does not replace preventive care or follow-up with a cardiologist.

When to seek medical care: Emergency assessment is needed for chest pain, pressure, or tightness that is severe, persistent, recurrent, or associated with sweating, breathlessness, nausea, fainting, or pain spreading to the arm, jaw, back, or shoulder. Prompt medical advice is also appropriate for increasing redness, swelling, drainage, numbness, or persistent bleeding at the access site; a rapidly enlarging bruise; fever; or new palpitations. Acıbadem Health Point’s multidisciplinary specialists and JCI-accredited hospitals diagnose and treat coronary conditions for international patients.

Frequently asked questions