When is CABG surgery most effective?

When is CABG surgery most effective?

• A. Only when someone has mitral valve disease
• B. When ventricular function is adequate with ejection fraction 50% or greater
• C. Only in patients under 40
• D. When ejection fraction is below 30%

Answer: (B)

CABG tends to be most effective when the pumping function of the heart is preserved or only modestly reduced, typically with an ejection fraction around 50% or higher. In this scenario, bypassing diseased coronary arteries reliably relieves ischemia, preserves myocardial tissue, and translates into better long-term survival and stable symptom relief with manageable surgical risk. When the left ventricle function is severely depressed, the surgery carries higher risk and the expected gains in survival and quality of life are smaller, even though some patients may still benefit. CABG addresses coronary blood flow, not isolated valve disease, and is not limited to a specific age group, so those scenarios don’t define when it’s most effective.

CABG tends to be most effective when the pumping function of the heart is preserved or only modestly reduced, typically with an ejection fraction around 50% or higher. In this scenario, bypassing diseased coronary arteries reliably relieves ischemia, preserves myocardial tissue, and translates into better long-term survival and stable symptom relief with manageable surgical risk. When the left ventricle function is severely depressed, the surgery carries higher risk and the expected gains in survival and quality of life are smaller, even though some patients may still benefit. CABG addresses coronary blood flow, not isolated valve disease, and is not limited to a specific age group, so those scenarios don’t define when it’s most effective.