What is the expected outcome of a successful CABG?

• A. No change in blood flow
• B. Immediate cure of all heart disease
• C. Worsening heart function
• D. Improved blood flow and relief from ischemic symptoms

Answer: (D)

CABG is aimed at restoring adequate blood flow to the heart muscle by bypassing narrowed or blocked coronary arteries. When a bypass graft successfully provides perfusion to areas that were ischemic, the heart muscle receives more oxygen, which reduces chest pain (angina) and limits ischemia. This improves symptoms and often enhances exercise tolerance and daily function. In patients with multivessel disease, improved perfusion can also stabilize or improve heart function that was compromised by insufficient blood flow, and may reduce the risk of future heart attacks in the affected regions. However, it doesn’t cure all heart disease or guarantee perfect heart function forever—grafts can change over time and non-ischemic cardiac issues may persist. The essential outcome of a successful CABG is improved blood flow to the heart and relief from ischemic symptoms.