Which of the following is a surgical option for treatment of severe myocardial infarction?

Coronary artery bypass grafting (CABG) is a surgical procedure used to treat severe myocardial infarction, particularly when there is significant blockage in the coronary arteries. During this surgery, a surgeon uses a blood vessel from another part of the body (graft) to bypass the blocked coronary artery, thus restoring blood flow to the heart muscle. This is crucial because reduced blood flow during a myocardial infarction can lead to damage of the heart tissue and compromise heart function. CABG can relieve symptoms such as chest pain (angina) and improve quality of life and survival rates after a heart attack.

In contrast, the other options do not serve this purpose. Ablation therapy is typically used in the context of arrhythmias, lymph node dissection pertains to cancer surgeries, and fluid drainage from the chest is more aligned with treating issues like pleural effusions and not directly related to addressing myocardial infarction. Therefore, CABG stands out as a recognized surgical intervention specifically designed to address the complications of severe myocardial infarction.