Many people only discover they have a cardiac blockage after having a heart attack. But the body usually gives warning signs before that happens. Knowing the symptoms of blocked heart arteries and when to get a heart blockage test can help you act in time and save your life.
Early Warning Signs of Blocked Arteries
A partially blocked artery often causes symptoms when the heart has to work harder, such as during walking, climbing stairs, or stress. This is called angina. Early signs of blocked arteries include the following:
- Chest pain or discomfort: pressure, tightness, or heaviness in the chest.
- Radiating pain to the arm, shoulder, neck, jaw, or back.
- Shortness of breath during routine activity.
- Unusual fatigue that doesn’t match your effort.
- Dizziness or lightheadedness, including sudden episodes.
- Nausea or cold sweats
- Heartburn-like discomfort that doesn’t improve with antacids.
These symptoms often improve with rest, so people tend to forget about them. If they keep coming back, it’s time for a proper check-up.
Symptoms of Blocked Heart Arteries in Women
Women may not experience the usual crushing chest pain. Their symptoms are often subtler and can be mistaken for acidity or stress. Watch for extreme tiredness, nausea, upper back or jaw pain, breathlessness, and lightheadedness.

What Happens When Heart Arteries Get Blocked?
Your heart needs a steady flow of oxygenated blood through the coronary arteries. Plaque is a buildup of cholesterol and other substances that forms when there is too much cholesterol in the bloodstream. Atherosclerosis is a condition in which plaque can narrow or block an artery.
If the plaque breaks open, a blood clot can form. Both plaque and clots reduce blood flow to the heart. Complete blockage causes a heart attack.
What Causes Blocked Heart Arteries?
Several risk factors speed up plaque build-up, such as:
- Diabetes
- High blood pressure
- Smoking and tobacco use
- Lack of exercise
- High cholesterol and a family history of heart disease
Most of these can be managed with early action.
How Long Can You Live With Blocked Arteries?
There’s no fixed answer. It depends on how many arteries are affected, how severe the blockage is, your overall health, and whether it’s treated. With timely treatment and healthy habits, many people live long, active lives. Ignoring symptoms is what makes blockages dangerous.

Don’t Wait for a Heart Attack: Get Tested Today
If you have chest discomfort, unexplained breathlessness or fatigue, or you have diabetes, high blood pressure or a smoking history, don’t wait. A simple heart blockage test can detect a problem early, when treatment is easier and outcomes are better.
Worried about your heart? Book a consultation with Dr Ghulam Sarwar, a trusted heart specialist at Omar Hospital & Cardiac Centre, Lahore, for a complete heart blockage test and a personalised treatment plan.