Coronary Angioplasty and Stents – Procedure, Risks, and Prevention

Coronary angioplasty and stents are some of the most important interventions in modern cardiology. These procedures help treat narrowed or blocked coronary arteries, restore blood flow, relieve chest pain, and prevent life-threatening heart attacks. For patients suffering from coronary artery disease (CAD), angioplasty often becomes a turning point in their health journey.

According to Dr. Vishal Khullar, an internationally acclaimed cardiovascular and thoracic surgeon at Lilavati Hospital in Mumbai, “Coronary angioplasty and stents have changed how we manage coronary artery disease. With early intervention and proper follow-up, patients can enjoy a significantly better quality of life.”

Coronary arteries can become narrowed over time due to the accumulation of plaque—a mixture of cholesterol, fat, calcium, and other substances. This narrowing limits blood supply to the heart muscle, leading to angina or even a heart attack.

Angioplasty involves inserting a balloon-tipped catheter into the narrowed artery. Once in place, the balloon is inflated to widen the artery. A stent, usually a small metal mesh tube, is then placed to keep the artery open. Some stents are drug-eluting, slowly releasing medication to reduce the risk of the artery narrowing again.

This minimally invasive procedure is often completed within an hour or two and typically requires only a short hospital stay.

Coronary angioplasty and stents are among the most frequently performed cardiovascular procedures globally. In India, their use has increased dramatically due to the growing prevalence of heart disease across all age groups.

The popularity of angioplasty is due to its:

• High success rate
• Minimally invasive nature
• Short recovery time
• Immediate symptom relief in many cases

Dr. Khullar notes that in both emergency cases, such as heart attacks, and elective situations, angioplasty has proven to be a safe and effective method of revascularization.

Angioplasty treats blockages caused by atherosclerosis, a condition in which fatty deposits build up inside the arteries. The decision to perform angioplasty is typically based on the severity and location of the blockage, as well as the patient’s symptoms.

Major causes include:

• Atherosclerosis (plaque buildup)
• Acute coronary syndromes (e.g., heart attacks)
• Stable angina not controlled with medications

Key risk factors for needing angioplasty:

• Smoking and tobacco use
• High cholesterol, especially LDL levels
• Hypertension
• Diabetes mellitus
• Obesity
• Family history of heart disease
• Sedentary lifestyle and poor diet

While some risk factors are hereditary, many can be controlled or modified through lifestyle and medical management.

Symptoms leading to angioplasty often reflect reduced oxygen delivery to the heart muscle. Most commonly, patients experience chest pain or discomfort, known as angina, which may occur during physical activity or emotional stress.

Other symptoms include:

• Shortness of breath
• Fatigue or unusual tiredness
• Palpitations or irregular heartbeat
• Dizziness or lightheadedness
• Sweating and nausea, especially during angina episodes

In acute scenarios, like myocardial infarction (heart attack), the pain may be more severe and sudden, requiring emergency intervention.

Before recommending angioplasty, doctors perform several tests to confirm the diagnosis and evaluate the severity of artery blockage.

Common diagnostic tools include:

• Electrocardiogram (ECG): Detects abnormal rhythms and signs of ischemia.
• Stress Test: Evaluates heart function during exercise or under medication-induced stress.
• Echocardiogram: Assesses the structure and function of the heart.
• Coronary Angiography: The gold standard for identifying blockages. Dye is injected into the arteries, and X-rays are used to visualize narrowing.

Dr. Khullar emphasizes that a proper diagnosis using state-of-the-art imaging ensures that angioplasty is done only when absolutely necessary.

Coronary angioplasty and stents offer fast relief for patients suffering from severe symptoms, and they significantly reduce the risk of future cardiac events. Most patients experience improved energy levels, reduced angina, and a better quality of life.

However, no procedure is without risks. While angioplasty is generally safe, some potential complications include:

• Bleeding at the catheter insertion site
• Allergic reaction to contrast dye
• Arterial damage or dissection
• Blood clots forming within the stent (stent thrombosis)
• In-stent restenosis, where the artery narrows again over time

Thanks to advancements in stent technology and surgical technique, these risks are significantly lower today than they were in the past.

The angioplasty procedure typically follows these steps:

1. Arterial access: Usually via the wrist (radial artery) or groin (femoral artery).
2. Guided catheter placement: The catheter is guided to the blocked artery.
3. Balloon inflation: A balloon expands the artery to restore blood flow.
4. Stent placement: A stent is inserted to keep the artery open permanently.

After the procedure, patients are monitored in a recovery unit and discharged within 24–48 hours in most cases. Long-term management includes medications, lifestyle changes, and regular follow-ups.

While angioplasty is highly effective, preventing the need for it—or its recurrence—is even better. Prevention begins with identifying and managing modifiable risk factors.

Effective strategies include:

• Following a heart-healthy diet rich in fiber, fruits, vegetables, and healthy fats
• Exercising regularly, such as brisk walking for 30 minutes a day
• Quitting smoking and avoiding exposure to secondhand smoke
• Managing stress through mindfulness, yoga, or counseling
• Keeping chronic conditions under control, especially diabetes and hypertension
• Taking prescribed medications regularly, including statins and antiplatelets
• Attending cardiac rehab for education, monitored exercise, and support

Dr. Khullar stresses that angioplasty is not a cure for heart disease. It must be complemented by consistent preventive care and lifestyle changes to maintain results.