15. Which of the following would be NOT suitable for coronary artery bypass grafting as a means of coronary revascularization during a ST segment elevation myocardial infarction?

A. A patient with an inferior ST elevation myocardial infarction and significant disease in the left anterior descending as well as the left circumflex coronary artery and hemodynamically stable.

B. A patient with an inferior ST elevation myocardial infarction and significant left main coronary disease in cardiogenic shock

C. A patient with an anterior ST elevation myocardial infarction and failed percutaneous coronary intervention

D. Acute severe mitral regurgitation during an inferior ST elevation myocardial infarction

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