Angioplasty
Overview
Angioplasty, also called percutaneous coronary intervention (PCI) or balloon angioplasty, is a minimally invasive procedure used to open narrowed or blocked blood vessels that supply blood to the heart. During the procedure, a doctor threads a thin tube called a catheter through a blood vessel, usually in the groin or wrist, and guides it to the blocked coronary artery. A small balloon at the tip of the catheter is then inflated to compress the plaque—a buildup of fatty deposits, cholesterol, and other substances—against the artery walls, widening the passage and restoring blood flow. In most cases, a tiny wire mesh tube called a stent is placed in the artery to keep it open long-term. Angioplasty is commonly performed to treat coronary artery disease, relieve chest pain (angina), and reduce the risk of heart attack. It can be done as a planned procedure or as an emergency treatment during a heart attack. While angioplasty is less invasive than open-heart surgery, it still carries some risks and requires careful follow-up care. The procedure typically takes one to three hours, and many patients can return home the same day or after an overnight hospital stay.
Purpose
- Restore blood flow to the heart muscle in people with coronary artery disease
- Relieve chest pain (angina) caused by reduced blood flow to the heart
- Improve heart function and reduce symptoms like shortness of breath during physical activity
- Emergency treatment during or immediately after a heart attack to minimize heart damage
- Reduce the risk of future heart attacks in people with significant blockages
- Open blocked arteries in other parts of the body, such as the legs (peripheral artery disease) or kidneys
- Avoid or delay the need for coronary artery bypass surgery in some patients
- Improve quality of life by allowing patients to be more physically active with less discomfort
Preparation
- Your doctor will review your medical history, current medications, and any allergies, especially to contrast dye or iodine
- Blood tests, electrocardiogram (ECG), and imaging studies like coronary angiography may be performed beforehand to locate blockages
- Inform your healthcare team about all medications you take, including over-the-counter drugs and supplements
- You may be asked to stop taking certain medications, particularly blood thinners, several days before the procedure—follow your doctor's specific instructions
- Arrange for someone to drive you home after the procedure, as you will not be able to drive yourself
- You will typically be instructed not to eat or drink anything for six to eight hours before the procedure
- Shower with antibacterial soap the night before or morning of the procedure if instructed
- Remove jewelry, dentures, contact lenses, and nail polish before the procedure
- Discuss any concerns or questions with your medical team before the day of the procedure
- If you have diabetes, ask your doctor about adjusting your insulin or diabetes medication schedule
How it's done
- You will be given a mild sedative to help you relax, but you will remain awake during the procedure
- The insertion site, usually the wrist or groin, is cleaned and numbed with local anesthetic
- A small incision is made, and a thin, flexible tube called a sheath is inserted into the artery
- Using real-time X-ray imaging (fluoroscopy), the doctor guides a catheter through your blood vessels to the blocked coronary artery
- Contrast dye is injected through the catheter to make the arteries visible on X-ray images, helping identify the exact location and severity of blockages
- A guidewire is threaded through the catheter and across the blockage
- A balloon catheter is advanced over the guidewire to the narrowed section of the artery
- The balloon is inflated for several seconds to compress the plaque and widen the artery—you may feel brief chest discomfort during inflation
- The balloon may be inflated and deflated several times to adequately open the artery
- In most cases, a stent (a small mesh tube) is placed over the balloon, expanded, and left permanently in the artery to keep it open
- Once the artery is adequately opened, the balloon and catheter are removed, but the stent remains in place
- The sheath is removed from the insertion site, and pressure is applied to stop any bleeding, or a closure device may be used
- The entire procedure typically takes one to three hours, depending on the number and location of blockages
Risks
- Bleeding or bruising at the catheter insertion site
- Blood clots forming at the site of the stent or catheter, which could lead to heart attack or stroke
- Damage to the blood vessel where the catheter was inserted
- Irregular heart rhythms (arrhythmias) during or after the procedure
- Allergic reaction to the contrast dye, which may cause itching, rash, or more serious reactions
- Kidney damage from the contrast dye, especially in people with pre-existing kidney problems
- Re-narrowing of the artery (restenosis), which can occur weeks to months after the procedure
- Heart attack during the procedure, though this is rare
- Stroke caused by dislodged plaque traveling to the brain
- Infection at the insertion site
- Need for emergency coronary artery bypass surgery if complications occur, though this is uncommon
- Damage to the heart muscle or coronary artery
- Radiation exposure from the prolonged use of X-ray imaging, though the benefits typically outweigh this risk
- Death, though this is very rare with modern techniques and occurs in less than 1% of elective procedures
Recovery
- You will be monitored in a recovery area for several hours after the procedure to watch for complications
- You will need to lie flat and keep the leg or arm with the insertion site still for several hours to prevent bleeding
- Most patients can go home the same day or after an overnight hospital stay, depending on their condition and the complexity of the procedure
- You will likely have a bruise and feel some soreness at the insertion site for a few days
- Avoid strenuous activities, heavy lifting (more than 10 pounds), and vigorous exercise for several days to a week
- You can usually return to work within a few days to a week, depending on your job and how you feel
- Drink plenty of fluids to help flush the contrast dye from your system
- Watch the insertion site for signs of infection such as increased redness, swelling, warmth, drainage, or fever
- Report any chest pain, shortness of breath, dizziness, or bleeding from the insertion site to your doctor immediately
- You will be prescribed medications such as blood thinners (antiplatelet drugs) that you must take exactly as directed—these are critical to prevent blood clots in the stent
- Do not stop taking any prescribed medications without talking to your doctor first, as this can be dangerous
- Attend all follow-up appointments to monitor your heart health and recovery
- Make lifestyle changes recommended by your doctor, including eating a heart-healthy diet, exercising regularly, quitting smoking, and managing stress
- Cardiac rehabilitation programs may be recommended to help you recover and reduce your risk of future heart problems
- Full recovery and return to normal activities typically occurs within one to two weeks for most people
Frequently asked questions
The procedure typically takes one to three hours, depending on the number of blockages being treated and their complexity. Emergency angioplasty during a heart attack may be completed more quickly, while complex cases involving multiple arteries may take longer.
Yes, you will be awake but sedated to help you relax. Local anesthetic is used to numb the insertion site, so you should not feel pain. You may feel some pressure when the catheter is inserted and brief chest discomfort when the balloon is inflated, but most patients tolerate the procedure well.
Modern stents are designed to be permanent. Drug-eluting stents, which release medication to prevent scar tissue formation, have significantly reduced the rate of re-narrowing. However, it is essential to take prescribed medications, especially blood thinners, and maintain heart-healthy lifestyle habits to keep the stent and your arteries functioning well long-term.
Angioplasty is a minimally invasive procedure that opens blocked arteries from the inside using a catheter, balloon, and usually a stent. It requires only small incisions and has a shorter recovery time. Coronary artery bypass surgery is open-heart surgery that creates new routes for blood flow around blocked arteries using blood vessels from other parts of the body. Bypass surgery is typically reserved for more extensive blockages or when angioplasty is not suitable. Your cardiologist will recommend the most appropriate treatment based on your specific condition.
Yes, re-narrowing of the artery, called restenosis, can occur. The risk is higher with older bare-metal stents but has been significantly reduced with drug-eluting stents. Taking prescribed medications as directed, particularly antiplatelet drugs, is crucial. Lifestyle changes such as eating a healthy diet, exercising, not smoking, and managing conditions like high blood pressure, high cholesterol, and diabetes also help prevent re-blockage.
Most patients will need to take antiplatelet medications such as aspirin and another blood thinner (like clopidogrel, prasugrel, or ticagrelor) to prevent blood clots from forming in the stent. You will typically need to take dual antiplatelet therapy for at least several months to a year, and possibly longer depending on your situation. Your doctor may also prescribe medications to manage cholesterol, blood pressure, and other heart disease risk factors. Never stop taking any of these medications without consulting your doctor first, as stopping prematurely can increase the risk of a heart attack.
Most people can resume light activities within a few days and return to work within a week, depending on their job. You should avoid heavy lifting, strenuous exercise, and activities that strain the insertion site for about a week. Your doctor will provide specific guidance based on your individual situation. Gradually increasing activity levels under your doctor's supervision is important for recovery.
No, angioplasty is not a cure for coronary artery disease. It is a treatment that relieves symptoms by opening blocked arteries and improving blood flow. The underlying disease process that caused the blockages can continue if risk factors are not managed. Lifestyle changes, medications, and ongoing medical care are essential to prevent new blockages from forming and to reduce the risk of future heart problems.
Contact your doctor immediately if you experience chest pain or pressure, shortness of breath, dizziness, fainting, irregular heartbeat, signs of infection at the insertion site (increased redness, swelling, warmth, drainage, or fever), significant bleeding or swelling at the insertion site, numbness or color changes in the limb where the catheter was inserted, or any other concerning symptoms. If you experience severe chest pain or difficulty breathing, call emergency services right away.
Most modern coronary stents are considered MRI-safe or MRI-conditional, meaning you can have an MRI scan under certain conditions. However, you should always inform your healthcare providers and the MRI technician that you have a stent. They will verify the type of stent you have and determine the appropriate waiting period and safety precautions. Generally, it is recommended to wait at least six weeks after stent placement before having an MRI.