Coronary-Artery Bypass Surgery and the Brain

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Abstract
Coronary-artery bypass grafting (CABG) is a very effective procedure for reducing angina and stabilizing ventricular function. It is not surprising, therefore, that more than 500,000 bypass procedures are performed in the United States each year. As techniques for anesthesia and surgery have advanced, the population considered eligible for this procedure has changed; candidates for CABG may now be not only older than in the past but also more likely to have such health problems as hypertension and diabetes. In addition, an increasing number of patients have previously undergone angioplasty, thereby delaying their initial CABG surgery to a more advanced age. . . .