June 9, 2026
Blocked arteries are commonly caused by a slow buildup of plaque inside the blood vessels. When plaque narrows the arteries that supply blood to the heart, the condition is known as coronary artery disease or coronary heart disease. Over time, reduced blood flow can cause chest pain, breathlessness, fatigue, irregular heartbeat, or even a heart attack.
MedlinePlus explains that coronary heart disease is caused by plaque buildup in the arteries of the heart, which can narrow the arteries and slow or stop blood flow to the heart muscle.
At SSB Heart & Multispeciality Hospital, Faridabad, the Cardiology Department offers advanced cardiac evaluation and procedures including coronary angiography, coronary angioplasty, pacemaker implantation, ECG, Stress Echo, TMT, Holter Monitoring, ECHO with Color Doppler, and other cardiac interventions.
Arteries carry oxygen-rich blood from the heart to different parts of the body. When cholesterol, fat, calcium, and other substances collect inside artery walls, they form plaque. This condition is known as atherosclerosis.
When plaque grows, it narrows the artery. In some cases, plaque may rupture and form a blood clot, suddenly blocking blood flow. If this happens in the heart, it can cause a heart attack. If it happens in the brain, it can cause a stroke.
Blocked arteries may not always cause symptoms in the early stages. Many people only notice symptoms when blood flow becomes significantly reduced. Cleveland Clinic notes that coronary artery disease limits blood flow in coronary arteries, and chest pain is one of the most common symptoms.
Common symptoms include:
Chest pain, heaviness, tightness, burning, or pressure may occur during physical activity or emotional stress. This is often called angina.
When the heart does not receive enough oxygen-rich blood, a person may feel breathless during walking, climbing stairs, or even at rest in serious cases.
Heart-related pain may travel beyond the chest. Some people experience discomfort in the left arm, jaw, shoulder, upper back, or neck.
Unusual tiredness, especially during routine activities, can be a warning sign of reduced blood flow.
Sudden dizziness, sweating, nausea, or weakness may occur during serious heart-related events.
Blocked arteries can sometimes contribute to rhythm problems, especially when the heart muscle is under stress.
The risk is higher in people with:
SSB’s own Cardiology page also lists risk factors such as age, family history, sedentary lifestyle, poor diet, tobacco use, diabetes, hypertension, and high cholesterol.
A cardiologist may suggest tests depending on the symptoms and risk profile.
An ECG records the electrical signals of the heart and may show rhythm changes or signs of reduced blood supply.
ECHO checks the heart’s structure, pumping function, and valves.
A treadmill test helps assess how the heart performs during physical exertion.
A CT scan may help detect calcium buildup and plaque in coronary arteries. The CDC includes CT scans for calcium buildup and plaque among diagnostic approaches for coronary artery disease.
Coronary angiography is a specialized test that helps doctors see blockages in the heart arteries.
Blood tests may include cholesterol profile, blood sugar, kidney function, and cardiac markers if a heart attack is suspected.
Mayo Clinic notes that diagnosis of coronary artery disease usually includes medical history, physical examination, and tests when symptoms such as chest pain or shortness of breath are present.
Treatment depends on the severity of blockage, symptoms, and overall heart health.
For early or mild disease, doctors may recommend:
Medicines may be prescribed to control cholesterol, blood pressure, blood clot risk, chest pain, or heart workload.
Angioplasty is a minimally invasive procedure used to open narrowed or blocked arteries. Cleveland Clinic explains that angioplasty opens arteries to allow blood to flow more easily, and it is commonly used for atherosclerosis.
In complex or multiple blockages, bypass surgery may be advised. The decision depends on the location and severity of disease.
Cardiac rehab may help patients recover after a heart procedure and adopt a safer heart-health routine.
NHLBI states that treatment for coronary heart disease may include lifestyle changes, medicines, or procedures to prevent heart attack and other heart problems.
Seek urgent medical help if you experience:
Do not wait for symptoms to “settle” if they are severe or unusual.
Blocked arteries may progress silently. Early diagnosis allows doctors to manage risk factors, prevent complications, and decide the right treatment before the condition becomes life-threatening.
In some cases, lifestyle changes and medicines may help manage the condition. However, severe blockages may require angioplasty, stenting, or bypass surgery.
The best test depends on symptoms. ECG, ECHO, TMT, CT coronary angiography, and coronary angiography may be recommended by a cardiologist.
Angioplasty is a minimally invasive procedure, not an open surgery. It helps open narrowed or blocked arteries.
Yes, blocked arteries may sometimes contribute to irregular heartbeat, especially if blood flow to the heart muscle is affected.
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