Angioplasty: A Simple Guide for Patients

Coronary Angioplasty (PCI): When It Is Needed, Stents, Stentless Angioplasty and Recovery

Author: Dr. Kulin Sheth
Medically reviewed by: Dr. Kulin Sheth
Last reviewed: 8 October 2026

Being advised to undergo angioplasty can raise many questions. Why is it needed? Does every blockage require a stent? Is bypass surgery a better option? What is stentless angioplasty? How long does recovery take?

Coronary angioplasty, also called percutaneous coronary intervention (PCI), is a minimally invasive procedure used to restore blood flow through a narrowed or blocked coronary artery. It is an established treatment for selected patients with coronary artery disease and an important emergency treatment for many patients with an acute heart attack.

However, not every coronary blockage requires angioplasty, and not every angioplasty requires a stent. The appropriate treatment depends on the patient's symptoms, clinical presentation, coronary anatomy, severity and location of disease, heart function, other medical conditions and the expected benefits and risks of different treatment options.

Apollo CVHF provides coronary angiography and angioplasty as part of its interventional cardiology services.

What is coronary angioplasty?

Coronary angioplasty is a catheter-based procedure used to improve blood flow through a significantly narrowed or blocked coronary artery.

A thin tube called a catheter is introduced through an artery, most commonly through the wrist (radial artery) and sometimes through the groin (femoral artery). Using X-ray guidance, the catheter is advanced to the coronary arteries.

A guidewire is passed across the narrowed segment. A small balloon may then be inflated to widen the treated section of the artery.

In conventional PCI, a coronary stent is often implanted to help maintain the opening of the artery. Modern coronary stents are generally drug-eluting stents, which release medication locally to reduce the risk of restenosis.

However, selected coronary lesions can also be treated without leaving a permanent stent, using techniques such as drug-coated balloon angioplasty.

When is angioplasty needed?

Angioplasty is considered when revascularising a coronary artery is expected to provide a meaningful clinical benefit.

During a heart attack

PCI can be an emergency, life-saving treatment for selected patients with acute coronary syndrome, particularly ST-elevation myocardial infarction (STEMI) when timely primary PCI is available.

Rapid restoration of coronary blood flow can limit damage to the heart muscle. The current ACC/AHA guideline for acute coronary syndromes provides recommendations for invasive management and PCI in appropriate patients. (ACC/AHA 2025 ACS Guideline)

If you think you may be having a heart attack, seek emergency medical care immediately. Apollo CVHF also provides information about recognising heart attack symptoms and emergency treatment.

For persistent or limiting angina

Coronary artery disease can cause angina, usually experienced as pressure, tightness, heaviness or discomfort in the chest, often during exertion.

When symptoms remain significant despite appropriate medical treatment, PCI may be considered if the coronary anatomy is suitable.

For selected significant coronary artery disease

Angioplasty may be appropriate when a coronary narrowing is clinically significant and opening the artery is expected to improve symptoms or, in selected clinical situations, cardiovascular outcomes.

Importantly, the presence of a blockage on coronary angiography does not automatically mean that a stent should be implanted.

The cardiologist considers the symptoms, clinical presentation, location and characteristics of the lesion, the significance of the narrowing, the patient's overall risk and whether PCI, bypass surgery or medical treatment is the most appropriate strategy.

For some patients with complex or extensive coronary disease, coronary artery bypass grafting (CABG) may provide greater benefit than PCI. When the best strategy is uncertain, a multidisciplinary Heart Team approach may be appropriate. (ACC/AHA/SCAI Revascularization Guideline)

Apollo CVHF provides both conventional coronary bypass surgery and minimally invasive bypass surgery (MICS-CABG).

Is angioplasty the same as putting in a stent?

No.

Angioplasty refers to mechanically widening a narrowed coronary artery, traditionally using a balloon.

PCI is the broader term for catheter-based coronary revascularisation and commonly involves stent implantation.

A stent is a small mesh scaffold that remains permanently inside the artery. It helps maintain vessel patency after the lesion has been treated.

But a stent is not mandatory in every PCI procedure.

Selected lesions can be treated with a drug-coated balloon (DCB) or other stentless strategies when the anatomy and procedural result are appropriate.

What is stentless angioplasty?

Stentless PCI, also called stentless angioplasty, refers to treating a coronary lesion without leaving a permanent stent behind.

One established approach is drug-coated balloon angioplasty. A balloon coated with an anti-proliferative drug is inflated across the lesion. The drug is transferred to the vessel wall during treatment, and the balloon is then removed.

The major difference is that no permanent metallic scaffold is left behind.

Stentless PCI can be particularly useful in selected situations, including some cases of in-stent restenosis, small-vessel disease and certain lesions where avoiding a permanent implant may be advantageous. It may also be considered in other appropriately selected coronary lesions.

Apollo CVHF has a dedicated DCB Angioplasty and Stentless PCI service explaining this approach in greater detail.

However, stentless angioplasty is not appropriate for every blockage. The artery must be carefully assessed to determine whether an acceptable result can be achieved without a stent. Significant residual narrowing, a flow-limiting dissection or other procedural findings may make stent implantation necessary.

The decision between a drug-eluting stent, drug-coated balloon, other stentless strategies or another PCI technique should therefore be based on the lesion anatomy and clinical situation, rather than simply on a preference to avoid a stent.

Importantly, avoiding a stent does not mean that the underlying coronary artery disease has been cured. Long-term cardiovascular risk-factor management remains essential.

What happens during angioplasty?

Before the procedure, your cardiologist reviews your symptoms, coronary angiogram, medical history, medications, kidney function and other factors that may affect procedural risk.

The procedure is performed in a cardiac catheterisation laboratory (cath lab).

1. The artery is accessed

The skin is cleaned and local anaesthetic is given. A small sheath is inserted into an artery, most commonly at the wrist.

2. The catheter is guided to the heart

A thin catheter is advanced through the arterial system to the coronary arteries under X-ray guidance.

3. The blockage is crossed

A very thin guidewire is carefully passed across the narrowed segment of the coronary artery.

4. The lesion is treated

Depending on the anatomy, the cardiologist may use a balloon, drug-coated balloon, stent or specialised plaque-modification technique.

In complex coronary disease, techniques such as rotational atherectomy (rotablation), intravascular lithotripsy (IVL), intravascular ultrasound (IVUS), optical coherence tomography (OCT) or physiological assessment may be used when appropriate.

Apollo CVHF provides complex coronary angioplasty, including rotablation and IVL.

5. The result is assessed

The cardiologist checks the treated artery using angiography and, when appropriate, intravascular imaging or physiological assessment to determine whether the result is satisfactory.

The aim is not simply to make the angiogram look better. The goal is to achieve an appropriate physiological and anatomical result while minimising procedural risk.

Is angioplasty painful?

Most patients remain awake during PCI.

Local anaesthetic is used at the access site. You may feel brief discomfort or pressure when the artery is accessed and may experience some transient sensations during the procedure.

Some patients are given medication to help them relax while remaining sufficiently alert to communicate with the medical team.

Coronary angioplasty is generally performed without general anaesthesia.

How long does angioplasty take?

The duration varies considerably depending on the complexity of the coronary disease.

A straightforward PCI may be completed relatively quickly, while procedures involving multiple lesions, severe calcification, chronic total occlusions or complex anatomy can take considerably longer.

Therefore, there is no single “normal” duration for angioplasty. Your cardiologist can provide a more meaningful estimate after reviewing your coronary anatomy.

What are the risks of angioplasty?

PCI is routinely performed and is generally safe when appropriately indicated, but it remains an invasive procedure.

Potential complications include:

• Bleeding or bruising at the catheter-entry site
• Damage to the access artery
• Abnormal heart rhythms
• Contrast-related allergic reactions
• Contrast-associated kidney injury in susceptible patients
• Coronary artery dissection or perforation
• Heart attack
• Stroke
• Acute stent thrombosis when a stent is implanted
• Rarely, the need for emergency surgery or another urgent intervention

Risk varies considerably between patients. An elective PCI in a stable patient and emergency PCI during a major heart attack are very different clinical situations.

The cardiologist should discuss the expected benefits and risks in the context of the individual patient.

What happens after angioplasty?

After PCI, you are monitored while the medical team checks your access site, heart rhythm and overall condition.

Some patients undergoing uncomplicated elective PCI may be discharged the same day or after overnight observation. Patients treated for a heart attack or undergoing complex procedures may require a longer hospital stay.

Your discharge plan depends on the reason for PCI, the complexity of the procedure and your overall condition.

Medicines after stenting

If a coronary stent has been implanted, prescribed antiplatelet medication is particularly important.

Stopping antiplatelet treatment prematurely can increase the risk of stent thrombosis, which can result in a potentially serious heart attack.

The duration and combination of antiplatelet treatment depend on the clinical situation, including whether PCI was performed for acute coronary syndrome, bleeding risk and other patient-specific factors. For patients with ACS who are not at high bleeding risk, the 2025 ACC/AHA guideline recommends dual antiplatelet therapy for at least 12 months as the default strategy, with individualisation when appropriate. (ACC/AHA 2025 ACS Guideline)

Never stop aspirin, a P2Y12 inhibitor or another prescribed antiplatelet medicine without discussing it with your cardiologist.

Patients treated with a stentless strategy may have a different antiplatelet regimen depending on the procedure and clinical circumstances. Your interventional cardiologist will provide specific instructions.

Recovery after angioplasty

Recovery after uncomplicated PCI is generally faster than after bypass surgery because there is no open chest incision.

Your cardiologist will advise you when to resume driving, work, exercise and other activities. The timing depends on why the procedure was performed, the complexity of the intervention and your overall health.

Long-term recovery is not simply about the stent—or the absence of one.

You should also work with your healthcare team to:

• Stop smoking and tobacco use.
• Control blood pressure.
• Lower LDL cholesterol appropriately.
• Manage diabetes.
• Follow a heart-healthy dietary pattern.
• Gradually return to physical activity as advised.
• Maintain a healthy body weight.
• Take prescribed cardiovascular medicines consistently.
• Attend follow-up appointments and cardiac rehabilitation when appropriate.

Apollo CVHF provides dedicated resources on Diabetes and Heart Health, High Blood Pressure and Heart Health and High Cholesterol and Heart Health.

Does angioplasty cure heart disease?

No.

Angioplasty treats a specific narrowed or blocked coronary artery. It can improve blood flow and, in appropriately selected patients, relieve angina or restore blood flow during an acute coronary event.

It does not cure the underlying process of atherosclerosis.

Plaque can remain elsewhere in the coronary arteries and can continue to progress if cardiovascular risk factors are not adequately managed.

Long-term treatment therefore remains important even after a technically successful angioplasty. This includes appropriate LDL-cholesterol lowering, blood-pressure control, diabetes management, smoking cessation, physical activity, healthy nutrition and prescribed medications.

For some patients with stable coronary artery disease, optimal medical therapy may be appropriate without PCI. For others, revascularisation provides important symptom or prognostic benefits. The correct strategy depends on the individual clinical situation rather than simply the percentage of narrowing seen on an angiogram. (ACC/AHA/SCAI Revascularization Guideline)

Angioplasty or bypass surgery: which is better?

Neither procedure is universally better.

PCI and CABG are different approaches to coronary revascularisation. The choice depends on factors including:

• Number of diseased coronary vessels
• Location and complexity of the blockages
• Left main coronary artery involvement
• Heart pumping function
• Diabetes
• Kidney function and other medical conditions
• Surgical and procedural risk
• Technical suitability for PCI or surgery
• Patient preferences and long-term goals

For some patients with complex multivessel or left-main coronary disease, CABG may provide advantages. In other situations, PCI may provide an effective less-invasive treatment.

When the optimal strategy is uncertain, a Heart Team approach can bring together interventional cardiology, cardiac surgery and other relevant expertise. (ACC/AHA/SCAI Revascularization Guideline)

Apollo CVHF provides both open-heart bypass surgery and minimally invasive bypass surgery.

What if you have been advised angioplasty but are unsure?

Being advised angioplasty does not mean that you should simply accept or reject the procedure without understanding the reason for the recommendation.

Ask your cardiologist:

• What is the location and severity of the blockage?
• Is the blockage responsible for my symptoms?
• Is PCI expected to improve my symptoms or prognosis?
• Is a stent required?
• Could a drug-coated balloon or another stentless approach be appropriate?
• Would medicines alone be reasonable?
• Would bypass surgery provide a better long-term option?
• What are the specific risks in my case?

If you have already been advised angioplasty and want another specialist assessment of your coronary anatomy and treatment options, Apollo CVHF offers a cardiology second-opinion service.

A second opinion does not necessarily mean that the original recommendation is incorrect. In complex coronary disease, it can help clarify the reasoning behind the proposed treatment.

What tests may be needed?

Not every patient with suspected or established coronary disease needs the same tests.

Depending on the clinical situation, assessment may include an ECG, echocardiogram, exercise testing, CT coronary angiography, invasive coronary angiography or other investigations.

Apollo CVHF provides:

• CT Coronary Angiography — non-invasive imaging of the coronary arteries in appropriately selected patients.
• Treadmill Test (TMT) — assesses exercise capacity, symptoms, ECG changes and blood-pressure response during exercise.
• 2D, 3D and Advanced Echocardiography — evaluates cardiac structure and function.
• Heart Health Check Packages — structured cardiovascular assessment for appropriate patients.

These investigations are not interchangeable. The appropriate test depends on the patient's symptoms, cardiovascular risk, previous test results and clinical findings.

When should you seek emergency help?

If you have new or severe chest pressure or discomfort, particularly if it lasts several minutes, occurs at rest, or is accompanied by breathlessness, sweating, nausea, fainting, or discomfort spreading to the arm, shoulder, jaw, neck or back, seek emergency medical care immediately.

Do not wait for a routine cardiology appointment if you think you may be having a heart attack.

You can read more about heart attack symptoms and emergency treatment on Apollo CVHF.

Expert cardiology care

If you or a family member has been advised to undergo coronary angioplasty, understanding why the procedure has been recommended is just as important as understanding how the procedure is performed.

Apollo CVHF's interventional cardiology team can assess coronary disease, review angiographic findings, discuss PCI, stenting, stentless angioplasty and bypass surgery where relevant, and develop a treatment plan based on the patient's clinical condition.

The goal is not simply to open an artery. It is to choose the right treatment for the right patient and provide appropriate long-term care for the underlying coronary disease.

Book a cardiology consultation with Apollo CVHF.

References

1. Lawton JS, Tamis-Holland JE, Bangalore S, et al. 2021 ACC/AHA/SCAI Guideline for Coronary Artery Revascularization. Journal of the American College of Cardiology. 2022;79. ACC guideline
2. Rao SV, O'Donoghue ML, Ruel M, et al. 2025 ACC/AHA/ACEP/NAEMSP/SCAI Guideline for the Management of Patients With Acute Coronary Syndromes. Journal of the American College of Cardiology. 2025. ACC/AHA guideline
3. Neumann FJ, Sousa-Uva M, Ahlsson A, et al. 2018 ESC/EACTS Guidelines on myocardial revascularization. European Heart Journal. 2019;40:87-165.
4. Writing Committee Members. 2025 ACC/AHA/ACEP/NAEMSP/SCAI Guideline for the Management of Patients With Acute Coronary Syndromes. American Heart Association/American College of Cardiology, 2025.

Author: Dr. Kulin Sheth
Medically reviewed by: Dr. Kulin Sheth
Last reviewed: 8 October 2026