Journal
AMERICAN JOURNAL OF CARDIOLOGY
Volume 93, Issue 9A, Pages 49B-52BPublisher
EXCERPTA MEDICA INC-ELSEVIER SCIENCE INC
DOI: 10.1016/j.amjcard.2004.01.026
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beta-Blocker use improves outcomes even more for the patient with diabetes mellitus than for the patient without diabetes with a, history of acute myocardial infarction or coronary artery disease. beta-Blockers facilitate shifting the metabolism of the myocardium away from free fatty acid toward glucose utilization, thereby reducing the cardiac workload and myocardial ischemia. beta-Blockers are also able to reverse the fetal gene induction program to reverse myocardial remodeling and improve ventricular function. Side effects of beta-blockers in the patient with diabetes include increased insulin resistance with worsening glycemic control, elevated tri-glyceride levels, and lowered levels of high-density lipoprotein cholesterol. Increased frequency of hypoglycemia and its lack of recognition can also be a problem in the insulin-deficient patient but is, a minimal problem with the patient with, type 2 diabetes. In addition, vasoconstriction, caused by unopposed a-activity, can worsen peripheral vascular disease. However, carvedilol, a nonselective p-blocker with vasodilating and insulin-sensitizing properties, can largely circumvent these problems and is the ideal p-blocker for the patient with diabetes. (C) 2004 by Excerpta Medica, Inc.
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