Heart blockages (coronary artery disease): symptoms, tests and treatment, from medication to angioplasty. Dr. Kulin Sheth, cardiologist, Ahmedabad.
Being told you have a heart blockage can leave you with plenty of questions. How serious is it? Can medicines help? Does it mean you need a stent or bypass surgery?
Coronary artery disease, or CAD, usually develops when cholesterol-containing deposits called plaque build up within the walls of the arteries supplying the heart. This can narrow the space for blood to flow and reduce the oxygen reaching the heart muscle. If a plaque breaks open and a blood clot forms, blood flow can suddenly fall or stop, causing a heart attack.
You may describe it as “dil ki nas mein blockage” or “heart ni nas bandh chhe”. Here, “nas” means a coronary artery: a blood vessel supplying the heart muscle. A blockage on a report needs careful assessment, but it does not automatically mean you need a procedure.
If you have new or persistent chest discomfort, symptoms at rest, or discomfort with sweating, breathlessness or faintness, seek emergency care now. Do not wait for a clinic appointment or an online reply.
Symptoms can include:
Angina is the name for discomfort caused by the heart muscle not receiving enough oxygen-rich blood. It may ease with rest, but a new or changing pattern still needs assessment. Some people have little warning or no obvious chest pain, including some people with diabetes.
“I can walk comfortably. Does that mean the blockage is harmless?”
Being able to walk comfortably is useful information, but it cannot settle the question on its own. Symptoms do not reliably tell us how narrowed an artery is. What matters is your usual level of activity, whether it has changed, and what the rest of the assessment shows.
You should not climb stairs or push through discomfort to test yourself at home.
CAD is more likely when several risk factors occur together. These include:
Age and physical inactivity also matter. Having a risk factor does not prove that you have a blockage, and being young or feeling well does not rule one out.
Managing high blood pressure, cholesterol and diabetes-related heart risk helps protect the heart over time. Where relevant, weight and cardiometabolic health form part of the same plan.
The starting point is understanding what has brought you in. What do you feel? When does it happen? Has your walking distance changed? What medicines are you taking, and what have earlier tests shown?
During a cardiology consultation, Dr. Kulin Sheth considers your symptoms, daily activity, medical history, examination and existing reports together. Questions about walking or climbing stairs help establish how the problem affects you; they complement tests rather than replace them.
Different tests answer different questions:
You do not need every test in a fixed sequence. The choice of cardiac tests should answer a specific question. Having coronary angiography also does not automatically mean a stent will be placed.
If a heart attack is suspected, assessment follows an emergency pathway, usually including ECGs and troponin blood tests. A scheduled treadmill test is not the next step in that situation.
Occasionally, chest discomfort continues even when there is no major narrowing in the larger arteries. Problems in the smaller vessels or temporary artery spasm may need consideration, alongside other causes of chest pain.
It is understandable to focus on the number written on the report. But the degree of narrowing is only part of the decision.
The assessment also considers:
For some intermediate narrowings, a pressure-wire measurement during angiography, such as FFR or iFR, helps assess the effect on blood flow before deciding about a stent. Not every narrowing needs this measurement.
The useful question is: What does this finding mean for my symptoms, my future risk and the treatment likely to help me?
Treatment has two important aims: helping you feel and function better, and reducing the risk of future heart problems. Which treatment serves those aims depends on your situation.
These remain part of treatment whether you need medicines alone, angioplasty or bypass. The plan includes stopping tobacco, improving food choices, suitable physical activity and managing blood pressure, cholesterol, diabetes and weight.
Changes should fit your daily life. If you have symptoms or are recovering from a heart event, ask what activity is safe before increasing exercise.
Medicines do different jobs. Statins and, when needed, other cholesterol-lowering medicines help reduce future cardiovascular risk. Antiplatelet medicines reduce clot formation when indicated. Other medicines can relieve angina, manage blood pressure or support a weakened heart.
The combination depends on your diagnosis, heart function, bleeding risk and other conditions. Not everyone needs every medicine. Tell your treating team about side effects, affordability concerns and any supplements or traditional remedies you use, so the plan remains practical and safe.
Coronary angioplasty, or PCI, opens a narrowed artery using a catheter and balloon, usually with a stent to help keep it open.
In stable disease, it can help when a suitable narrowing causes troublesome symptoms despite medical treatment. Some higher-risk patterns may also benefit from restoring blood flow. During a heart attack, emergency treatment has a different purpose and urgency.
Every blockage does not need a stent. Equally, being advised medicines alone does not mean the problem is being ignored. You should understand the expected benefit of each option in your case.
Bypass surgery creates another route for blood to reach the heart muscle beyond a narrowing. It does not remove all the underlying plaque.
Bypass may offer a better long-term option for certain patterns of left-main or complex multivessel disease, particularly in some people with diabetes or reduced heart function. The choice also depends on surgical risk and your preferences. When the best approach is unclear, discussion between interventional cardiology and cardiac surgery teams helps guide the recommendation.
A technically possible complex angioplasty is not automatically the most suitable treatment. The expected benefit and risks of angioplasty, bypass and medical treatment need to be considered together.
If you have been advised a stent or bypass and want to understand the recommendation, Dr. Sheth personally reviews your existing reports and images before deciding whether further assessment is needed. Bring the angiography images, not only the written report, along with your other tests and medicine list.
The review can help clarify why treatment has been advised and what alternatives are reasonable. Do not delay urgent treatment to arrange an elective second opinion.
CAD usually needs ongoing care, even after a successful procedure. Follow-up gives you a chance to discuss symptoms, confidence with activity, medicine side effects and any difficulty following the plan.
Blood pressure, LDL cholesterol and diabetes targets are set individually. Blood tests and other monitoring depend on your treatment and health. Repeat scans, treadmill tests or angiography are not automatically needed at fixed intervals when you remain stable; a change in symptoms or function may change that decision.
After a heart attack or procedure, suitable cardiac rehabilitation can help you return to activity with support. Your recovery and follow-up plan should explain what you can do, which medicines to continue and when to seek help.
Do not stop prescribed antiplatelet medicines after a stent without speaking to your treating team, even if you feel well or need another procedure.
Seek emergency care for new, persistent or worsening chest pressure or discomfort, particularly if it occurs at rest or comes with breathlessness, sweating, nausea, faintness, or pain spreading to the arm, jaw or back.
Do not wait for pain to become severe. A heart attack can sometimes feel like indigestion or occur without prominent chest pain. Do not assume a new concerning episode is “gas” or acidity.
Call emergency services or arrange immediate help to reach an emergency department. Do not drive yourself. Do not wait for a clinic appointment, WhatsApp reply or second opinion. The guidance on chest pain and heart attack warning signs explains this further, but getting help comes first.
You do not need to arrive knowing which test or treatment you need. Bring your reports, available images and current medicines, along with the questions worrying you most. Dr. Kulin Sheth sees outpatients at Sheth Heart Clinic, Bopal, Ahmedabad, and performs interventional procedures at Apollo CVHF Hospital, Bodakdev. You can arrange a consultation to discuss your symptoms, understand a report or review a treatment recommendation.