Coronary Artery Bypass Surgery Compared with Percutaneous Coronary Interventions in Patients with Insulin-treated Type 2 Diabetes Mellitus: a Systematic Review and Meta-analysis of 6 Randomized Controlled Trials

Overview

Journal Cardiovasc Diabetol

Publisher Biomed Central

Specialties Cardiology & Vascular Diseases
Endocrinology

Date 2016 Jan 8

PMID 26739589

Citations 21

Authors

Pravesh Kumar Bundhun

Zi Jia Wu

Meng-Hua Chen

Affiliations

Soon will be listed here.

Abstract

Background: Data regarding the long-term clinical outcomes in patients with insulin-treated type 2 diabetes mellitus (ITDM) revascularized by either coronary artery bypass surgery (CABG) or percutaneous coronary intervention (PCI) are still controversial. We sought to compare the long-term (≥1 year) adverse clinical outcomes in patients with ITDM who underwent revascularization by either CABG or PCI.

Methods: Randomized Controlled Trials (RCTs) comparing the long-term clinical outcomes in patients with ITDM and non-ITDM revascularized by either CABG or PCI were searched from electronic databases. Data for patients with ITDM were carefully retrieved. Odd Ratio (OR) with 95 % confidence interval (CI) was used to express the pooled effect on discontinuous variables and the pooled analyses were performed with RevMan 5.3.

Results: Six RCTs involving 10 studies, with a total of 1297 patients with ITDM were analyzed (639 patients from the CABG group and 658 patients from the PCI group). CABG was associated with a significantly lower mortality rate compared to PCI with OR: 0.59, 95 % CI 0.42-0.85; P = 0.004. Major adverse cardiovascular and cerebrovascular events as well as repeated revascularization were also significantly lower in the CABG group with OR: 0.51, 95 % CI 0.27-0.99; P = 0.03 and OR 0.34, 95 % CI 0.24-0.49; P < 0.00001 respectively. However, compared to PCI, the rate of stroke was higher in the CABG group with OR: 1.41, 95 % CI 0.64-3.09; P = 0.40, but this result was not statistically significant.

Conclusion: CABG was associated with significantly lower long-term adverse clinical outcomes compared to PCI in patients with ITDM. However, due to an insignificantly higher rate of stroke in the CABG group, further researches with a larger number of randomized patients are required to completely solve this issue.

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