Heart disease remains a leading cause of mortality worldwide, with coronary artery blockages at the center of the crisis. When diagnosed with heart disease, patients often face a confusing choice between angioplasty (stents) and Coronary Artery Bypass Grafting (CABG).
This guide breaks down the clinical criteria for surgery, helping you understand when bypass surgery is the medically superior choice for long-term survival.
What Are Heart Blockages? (Coronary Artery Disease)
Heart blockages occur when the coronary arteries—the primary vessels supplying oxygenated blood to the heart muscle—become narrowed. This condition, known as Coronary Artery Disease (CAD), is caused by atherosclerosis.
What Is Arterial Plaque Made Of?
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LDL Cholesterol (the “bad” cholesterol)
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Fatty deposits
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Calcium (which causes hardening of the arteries)
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Inflammatory cells
As plaque accumulates, it restricts blood flow, leading to ischemia (oxygen deprivation), which can cause chest pain or a myocardial infarction (heart attack).
Symptoms of Heart Blockage: Warning Signs to Watch For
Identifying symptoms early can be the difference between a planned procedure and emergency surgery.
Stable Angina: Chest pain or pressure during physical activity.
Shortness of Breath (Dyspnea): Feeling winded during simple tasks.
Referred Pain: Discomfort radiating to the jaw, neck, left arm, or back.
Silent Ischemia: Common in diabetic patients, where blockages exist without traditional chest pain.
How Is Heart Blockage Diagnosed?
To determine if you need a stent or bypass, cardiologists use the following diagnostic tools:
ECG & Stress Test: To check heart rhythm and exercise tolerance.
Echocardiogram: To measure the Ejection Fraction (EF) (how well your heart pumps).
CT Coronary Angiography: A non-invasive 3D scan of the arteries.
Coronary Angiogram: The gold standard invasive test that provides a definitive “map” of blockages.
When Is Bypass Surgery (CABG) Needed?
While many blockages are treated with Percutaneous Coronary Intervention (PCI) or stents, Bypass Surgery is often recommended for more complex cases to ensure better long-term outcomes.