A 50-year-old male patient arrives in the emergency department complaining of severe chest pain. He is taken to the cardiac cath lab for a coronary angiogram and left ventriculogram. The cardiologist discovers a lesion in the left main coronary artery branch and orders an immediate CABG. 1. Why does the location of this lesion make it more dangerous than lesions in other locations? 2. What does the acronym CABG stand for? 3. Assuming that the CABG is successful, what is the patient's postoperative prognosis? 4. Could the cardiologist perform an angioplasty to repair the lesion?

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