JOURNAL ARTICLE
REVIEW

Effectiveness of percutaneous coronary intervention with drug-eluting stents compared with bypass surgery in diabetics with multivessel coronary disease: comprehensive systematic review and meta-analysis of randomized clinical data

Abdul Hakeem, Nadish Garg, Sabha Bhatti, Naveen Rajpurohit, Zubair Ahmed, Barry F Uretsky
Journal of the American Heart Association 2013, 2 (4): e000354
23926119

BACKGROUND: Controversy persists regarding the optimal revascularization strategy for diabetic patients with multivessel coronary artery disease (MVD). Coronary artery bypass grafting (CABG) has been compared with percutaneous coronary intervention (PCI) using drug-eluting stents (DES) in recent randomized controlled trials (RCTs).

METHODS AND RESULTS: RCTs comparing PCI with DES versus CABG in diabetic patients with MVD who met inclusion criteria were analyzed (protocol registration No. CRD42013003693). Primary end point (major adverse cardiac events) was a composite of death, myocardial infarction, and stroke at a mean follow-up of 4 years. Analyses were performed for each outcome by using risk ratio (RR) by fixed- and random-effects models. Four RCTS with 3052 patients met inclusion criteria (1539 PCI versus 1513 CABG). Incidence of major adverse cardiac events was 22.5% for PCI and 16.8% for CABG (RR 1.34, 95% CI 1.16 to 1.54, P<0.0001). Similar results were obtained for death (14% versus 9.7%, RR 1.51, 95% CI 1.09 to 2.10, P=0.01), and MI (10.3% versus 5.9%, RR 1.44, 95% CI 0.79 to 2.6, P=0.23). Stroke risk was significantly lower with DES (2.3% versus 3.8%, RR 0.59, 95% CI 0.39 to 0.90, P=0.01) and subsequent revascularization was several-fold higher (17.4% versus 8.0%, RR 1.85, 95% CI 1.0 to 3.40, P=0.05).

CONCLUSIONS: These data demonstrate that CABG in diabetic patients with MVD at low to intermediate surgical risk (defined as EUROSCORE <5) is superior to MVD PCI with DES. CABG decreased overall death, nonfatal myocardial infarction, and repeat revascularization at the expense of an increase in stroke risk.

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