Being told you need an angioplasty is unsettling, and the anxiety usually comes from not knowing what the experience will actually be like. Patients imagine open surgery. In reality most people are awake, talking to the team, and walking the same evening.
Here is what happens, step by step, at each stage.
What the Procedure Is Treating
Coronary arteries supply the heart muscle itself. Over years, cholesterol and inflammation build a plaque in the artery wall that narrows the channel. When narrowing passes roughly seventy percent, blood flow during exertion becomes inadequate and you feel angina. If a plaque ruptures and a clot forms on it, the artery closes completely and a heart attack begins.
Angioplasty reopens that narrowing mechanically. A stent, a small metal mesh tube, is left behind to hold the artery open.
The Angiogram Comes First
You cannot treat a blockage you have not mapped. Coronary angiography is a dye study that shows every coronary artery and exactly where the narrowings are.
A thin tube is passed from an artery at your wrist or groin up to the heart. Contrast dye is injected and X ray images are recorded. You will feel a warm flush as the dye goes in, which passes in seconds. The study itself takes about twenty to thirty minutes.
Sometimes the angiogram shows disease best treated with medicines alone, or disease extensive enough that bypass surgery is the better option. That decision is made from these images.
Step by Step Through the Angioplasty
If a stent is appropriate, it is often done in the same sitting, which spares you a second procedure.
- Local anaesthetic numbs the skin at the wrist. This is the only part that stings
- A guide catheter is positioned at the opening of the affected artery
- A wire thinner than a hair is passed across the narrowing
- A balloon is tracked over the wire and inflated for a few seconds, compressing the plaque
- You may feel brief chest pressure during inflation, because flow stops momentarily. Tell the team, it is expected
- A stent is deployed at the site and expanded against the artery wall
- Final images confirm flow has been restored
Total time is usually forty five to ninety minutes depending on how many arteries are treated.
Are You Asleep During It?
No, and this surprises people. You are awake and lightly sedated. There is no cut, no stitches, and no general anaesthetic, so you avoid the recovery that a general anaesthetic brings. You can talk to the cardiologist throughout.
The exception is a very complex case or an unstable patient, where the anaesthesiology team may provide deeper sedation.
Recovery Hour by Hour
Recovery is faster than most patients expect, particularly when the wrist route is used.
- First 2 to 4 hours: a compression band on the wrist is gradually released. Bed rest if the groin was used
- Same evening: most patients are sitting up, eating and walking to the bathroom
- Next morning: discharge for a planned case, typically after twenty four hours
- Week 1: light activity, no lifting with the puncture arm, wound kept dry
- Weeks 2 to 4: gradual return to work and normal walking
- Week 6: most people are back to full activity including exercise
After an emergency angioplasty for a heart attack, the stay is longer, usually three to five days, because the heart muscle itself needs monitoring.
The Medicines Afterwards Are Not Optional
A fresh stent is a foreign surface inside an artery until the vessel lining grows over it, which takes months. During that time a clot can form on it, and a stent thrombosis is a serious event.
You will be given two antiplatelet drugs, usually aspirin plus one other, and the second one is typically continued for six to twelve months. Stopping either early without cardiology advice is the single most dangerous thing a stented patient can do. If a dentist or surgeon asks you to stop them before a procedure, they need to speak to your cardiologist first.
A statin is also standard, not because your cholesterol is necessarily high, but because it stabilises the remaining plaques elsewhere.
A Stent Fixes a Blockage, Not the Disease
This is the part that gets lost. The stent restores flow in one segment. The process that created the plaque is still active everywhere else in your arteries.
Long term outcome depends on stopping tobacco completely, controlling blood pressure and diabetes, taking the statin, and building regular activity back in. Cardiac rehabilitation with our physiotherapy team makes a measurable difference to how well patients recover their fitness and confidence.
Angioplasty has become one of the most predictable procedures in cardiology, and the experience is far less daunting than the words suggest. What determines your long term result is less the stent itself than what happens in the year after it.
If you have been advised an angiogram, our interventional cardiology team in T. Nagar will talk you through the options before anything is scheduled.
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