Introduction:
Hyperglycemia is associated with unfavorable prognosis in patients with acute coronary syndrome (ACS). Studies with intensive glycemic control in ACS patients have provided inconsistent results. A meta-analysis was performed to evaluate the effectiveness and safety of intensive glycemic control in patients with ACS.
Methods:
Search of PubMed, Cochrane CENTRAL, EMBASE, EBSCO, Web of Science and CINAHL databases from their inception through April 2014, identifying randomized controlled trials (RCTs) comparing the effects of intensive versus standard glucose management in patients with ACS. We calculated summary random-effect odds ratios (OR) and 95% confidence intervals (CI).
Results:
Results from 10 RCTs comprising 2,621 patients were analyzed. All-cause mortality between intensive versus standard glucose management groups did not differ significantly (OR 1.00, 95% CI 0.75-1.34). Similarly, no significant differences were observed between the comparator groups for the odds of cardiac mortality (OR 0.87, 95% CI, 0.67 to 1.12), recurrent myocardial infarction (OR 1.07, 95% CI, 0.76 to 1.52), or stroke (OR 1.20, 95% CI, 0.60 to 2.40). The risk of hypoglycemia (OR 5.95, 95% CI, 2.73 to 12.97; p<0.001) was significantly higher with intensive compared with standard glucose management.
Conclusions:
Intensive glucose control compared with standard care in ACS patients did not reduce mortality or morbidity, but significantly increased the risk of hypoglycemia. These data from prior clinical trials should be interpreted in the context of their significant methodological limitations.
Influence of glycemic control on gain in VO2 peak, in patients with type 2 diabetes enrolled in cardiac rehabilitation after an acute coronary syndrome. The prospective DARE study
