Coronary Angioplasty and Stenting in Singapore

Coronary angioplasty is the procedure that opens a narrowed or blocked heart artery from the inside, using a small balloon and, almost always, a stent to hold the artery open. It is how most heart attacks are treated today, and it relieves angina in people whose arteries are too narrowed for medication alone.

This page explains who needs angioplasty, what actually happens in the cath lab, the risks, recovery, and what it costs in Singapore. It is written for patients and families rather than for doctors.

What is coronary angioplasty?

The coronary arteries are the small vessels that supply the heart muscle with blood. Over years, cholesterol-rich plaque builds up in their walls and narrows them. A severe narrowing starves the muscle of oxygen during exertion (angina); a plaque that ruptures and clots off the artery completely causes a heart attack.

Angioplasty (also called PCI, percutaneous coronary intervention) treats the narrowing without surgery. A thin tube is passed from the wrist or groin up to the heart, a balloon is inflated inside the narrowing to squash the plaque against the artery wall, and a stent, a tiny mesh scaffold, is left in place to keep the artery open. Modern stents are coated with a drug that stops scar tissue narrowing the artery again.

Who needs angioplasty and stenting?

• During a heart attack. Opening the blocked artery within hours limits the damage to the heart muscle. This is an emergency, and in Singapore the fastest route is to call 995.
• Angina that limits your life despite medication. If chest tightness on exertion persists on a good medical regimen, opening the culprit artery usually relieves it.
• A significant narrowing confirmed on angiography. A narrowing is generally treated when it is severe and shown to be restricting blood flow, for example on a pressure-wire test (FFR) done during the angiogram.

It is worth saying clearly: not every narrowing needs a stent. Stable plaque that is not limiting flow is often best treated with medication and aggressive risk-factor control, which is where much of my preventive cardiology work sits. When the coronary disease is extensive or involves the main left artery, bypass surgery may be the better option, and I discuss those cases with a cardiac surgeon before recommending either.

What happens during the procedure?

Angioplasty is performed in a hospital cardiac catheterisation laboratory, at the Parkway hospital of your choice (Mount Elizabeth Orchard, Mount Elizabeth Novena or Gleneagles), under local anaesthetic with light sedation. You are awake but comfortable.

1. A small puncture is made in the artery at the wrist (radial) or, less often, the groin (femoral). The wrist is my preferred route because it is more comfortable and you can sit up straight afterwards.
2. A fine catheter is guided to the heart under X-ray and contrast dye is injected to map the arteries. This is the coronary angiogram; if the pictures show a narrowing that needs treating, we usually go straight on to angioplasty in the same sitting.
3. A guidewire is passed across the narrowing, the balloon is inflated for a few seconds, and the stent is expanded into place. You may feel brief chest pressure while the balloon is up.
4. The catheter is removed and the puncture site sealed with a pressure band (wrist) or a closure device (groin).

The whole procedure typically takes 45 to 90 minutes. Most planned (elective) cases go home the next morning. 

What are the risks?

Angioplasty is a routine procedure with a good safety record, but it is not risk-free and I go through the numbers with every patient. The commonest problem is bruising at the puncture site. Serious complications, such as a heart attack caused by the procedure, stroke, a tear in the artery requiring emergency surgery, or a serious reaction to the contrast dye, are uncommon, in the region of 1 in 400 or fewer for planned procedures, and are higher in emergencies and in people with kidney disease or diabetes. 

The risk that matters most afterwards is clotting inside the new stent. This is why two antiplatelet medicines are taken together for a period after stenting, and why they should never be stopped without speaking to your cardiologist.

Recovery after a stent

• First week: keep the wrist or groin site clean, avoid heavy lifting, and watch for swelling or bleeding.
• Driving: usually after a week for a planned procedure, longer after a heart attack. Singapore driving guidelines should be consulted. 
• Work: most people with desk jobs return within a week.
• Medication: dual antiplatelet therapy for a defined period, a statin, and blood pressure treatment where needed. These are the foundation of preventing a further event.
• Cardiac rehabilitation: a supervised exercise programme improves fitness and confidence and lowers the chance of another event.

A stent treats one narrowing; it does not cure coronary artery disease. Long-term results depend on what happens to cholesterol, blood pressure, blood sugar, weight and smoking afterwards. That follow-up is a large part of what I do.

How much does angioplasty cost in Singapore?

Private angioplasty in Singapore is a hospital procedure and the total bill combines the cardiologist’s fee, the hospital’s facility and cath-lab charges, the stents and equipment, and the ward stay. As a guide, a single-vessel elective angioplasty with one stent typically falls in the range of S$35000 – 60000; multi-vessel or emergency cases cost more. The Ministry of Health publishes fee benchmarks for private-sector procedures, and we provide a written estimate before any planned procedure.

Angioplasty is MediSave- and MediShield Life-claimable, and Integrated Shield Plans and most international insurers cover it as an inpatient procedure, subject to pre-authorisation. See my guide to health insurance and cardiac care.

Arrange an assessment

If you have been told you may need a stent, or you have chest pain on exertion and want a clear answer, the starting point is a consultation with an ECG, and usually a stress test or a CT coronary angiogram, all of which can be arranged within a day or two.

If you would like to arrange this at the clinic, I see patients at the Harley Street Heart and Vascular Centre, Mount Elizabeth Medical Centre, Orchard and at Gleneagles Hospital. You can contact us online, message us on WhatsApp, or call +65 6235 5300. Most appointments are available within 1–2 days.

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Written by Dr Michael Ross MacDonald MB ChB, BSc (Hons), FRCP (UK), MD (Research), FESC (Europe). Senior Consultant Cardiologist at the Harley Street Heart and Vascular Centre, Singapore. About Dr MacDonald.

This page is general information, not a substitute for individual medical advice. If you have symptoms such as chest pain, breathlessness, or fainting, seek medical care promptly, and in an emergency call 995.

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