Coronary Artery Disease: Symptoms, Causes, and Treatment
Coronary artery disease (CAD) is the most common type of heart disease, caused by plaque buildup in the arteries that supply blood to your heart. Symptoms include chest pain (angina), shortness of breath, and fatigue. Early diagnosis and treatment can help manage symptoms and prevent complications like heart attacks.
In plain words
Coronary artery disease (CAD) happens when the blood vessels that carry blood to your heart get damaged or blocked. This is usually because of plaque, a fatty buildup inside the arteries. CAD is the most common heart disease. It can cause chest pain, shortness of breath, and tiredness. Over time, it can lead to heart attacks if not treated. Many things can raise your risk, like high cholesterol, smoking, or diabetes. Doctors diagnose it through tests and treat it with medicines, lifestyle changes, and sometimes surgery.
What is Coronary Artery Disease: Symptoms, Causes, and Treatment?
Coronary artery disease (CAD) is the most common type of heart disease, caused by plaque buildup in the arteries that supply blood to your heart. Symptoms include chest pain (angina), shortness of breath, and fatigue. Early diagnosis and treatment can help manage symptoms and prevent complications like heart attacks.
Symptoms
Early symptoms
- Chest pain (angina): Feels like pressure, tightness, or burning in your chest, often triggered by physical or emotional stress. Typically goes away with rest. (2) (3)
- Shortness of breath: Occurs during physical activity and improves with rest. Caused by reduced blood flow to the heart. (2) (3)
- Fatigue: Unusual tiredness, even with minimal activity. May feel overwhelming. (2)
- Nausea: Commonly reported, especially in women, often mistaken for indigestion. (2)
Serious or emergency symptoms
- Heart attack: Crushing chest pain, pain spreading to the shoulder or arm, sweating, dizziness, and nausea. Requires immediate emergency care. Call emergency services immediately. (2)
Causes
Primary causes
Risk factors
High cholesterol
Elevated LDL cholesterol levels increase plaque buildup in arteries. (1) (4)
Smoking
Damages blood vessels and accelerates plaque formation. (1) (4)
Diabetes
High blood sugar damages arteries and increases CAD risk. (1) (4)
High blood pressure
Puts extra strain on artery walls, increasing damage. (1) (4)
Diagnosis
Diagnosis begins with a medical history and physical exam. Your doctor may order tests like an electrocardiogram (ECG), echocardiogram, stress test, or coronary angiogram to identify blockages in your arteries.
Electrocardiogram (ECG)
Records electrical signals in your heart to detect irregularities. (5)
Stress test
Measures heart function during physical activity to identify reduced blood flow. (5)
Coronary angiogram
Uses X-ray and dye to visualize blockages in coronary arteries. (5)
Treatment
Medication options
Statins
Lowers LDL cholesterol levels and reduces plaque buildup. (5) (7)
Beta blockers
Reduces heart rate and blood pressure, decreasing heart workload. (5) (7)
Nitroglycerin
Relieves chest pain by increasing blood flow to the heart. (5) (7)
Lifestyle and self-care
- Quit smoking: Smoking cessation significantly reduces CAD progression and heart attack risk. (7) (8)
- Heart-healthy diet: Focus on vegetables, fruits, whole grains, and fish. Limit saturated fats, salt, and added sugars. (7) (8)
- Regular exercise: Aim for at least 150 minutes of moderate-intensity activity per week to improve heart health. (7) (8)
- Weight management: Losing even a small amount of weight can improve cholesterol and blood pressure. (7) (8)
Always discuss dosing and treatment changes with your own prescriber.
Possible complications
- Heart attack: Occurs when a coronary artery is completely blocked, leading to heart muscle damage. (6)
- Heart failure: The heart becomes too weak to pump blood effectively due to prolonged reduced blood flow. (6)
- Arrhythmias: Irregular heart rhythms caused by damage to the heart's electrical system. (6)
When to see a doctor
Routine follow-up
- See your doctor if you have risk factors like high blood pressure, high cholesterol, or diabetes, even without symptoms. (8)
Seek emergency care
- Seek immediate medical help for chest pain lasting more than a few minutes, especially if accompanied by pain spreading to the arm, sweating, or nausea. (8)
Frequently asked questions
What are the first signs of coronary artery disease?
Early signs include chest pain (angina), shortness of breath during activity, fatigue, and nausea. Symptoms often occur during physical or emotional stress and improve with rest. (2) (3)
Can coronary artery disease be cured?
There’s no cure, but lifestyle changes, medications, and procedures can manage symptoms and slow disease progression. Early treatment is key to preventing complications. (5) (8)
Is chest pain always present with CAD?
No. Many people, especially women and older adults, may experience atypical symptoms like fatigue, nausea, or shortness of breath without chest pain. (2) (3)
How fast does coronary artery disease progress?
Progression varies. Plaque builds up over many years, but sudden blockages can occur from plaque rupture. Managing risk factors can slow progression. (4)
What’s the difference between CAD and a heart attack?
CAD is a chronic condition of narrowed coronary arteries. A heart attack occurs when a coronary artery is suddenly blocked, leading to heart muscle damage. (6)
References
- CDC — Coronary Artery Disease source 1
- CDC — Heart Disease Symptoms source 2
- NHS — Coronary heart disease source 3
- NHS — Coronary heart disease - Causes source 4
- Mayo Clinic — Coronary artery disease - Diagnosis and treatment source 5
- American Heart Association — What Is Cardiovascular Disease? source 6
- MedlinePlus — Coronary Artery Disease source 7
- NHS — Coronary heart disease - Living with source 8