Impact of Chronic Kidney Disease on Outcomes of Percutaneous Coronary Intervention in Patients With Diabetes Mellitus: A Systematic Review and Meta-Analysis.

Background: The impact of chronic kidney disease (CKD) on adverse cardiovascular outcomes after percutaneous coronary intervention in patients with diabetes mellitus (DM) is still unclear. This study aimed to systematically assess evidence on this topic. Methods: The PubMed, Embase, and CENTRAL databases were searched for studies comparing mortality, myocardial infarction (MI), or revascularization outcomes between patients with DM with and without CKD. Results: In 11 studies, the presence of CKD was associated with significantly increased risk of early allcause mortality (risk ratio [RR], 3.45; 95% CI, 3.07-3.87; I 2 = 0%; P < .001), late all-cause mortality (RR, 2.78; 95% CI, 1.92-4.02; I 2 = 83%; P < .001), cardiac mortality (RR, 2.90; 95% CI, 1.99-4.22; I 2 = 29%; P < .001), and MI (RR, 1.40; 95% CI, 1.06-1.85; I 2 = 13%; P = .02) compared with no CKD. There was no difference in the risk of any revascularization between those with and without CKD. Analysis of adjusted hazard ratios (HRs) indicated significantly increased risk of mortality (HR, 2.64; 95% CI, 1.91-3.64; I 2 = 0%; P < .001) in the CKD group but only a nonsignificant tendency of increased MI (HR, 1.59; 95% CI, 0.99-2.54; I 2 = 0%; P = .05) and revascularization (HR, 1.24; 95% CI, 0.94-1.63; I 2 = 2%; P = .12) in the CKD group. Conclusion: The presence of CKD in patients with DM significantly increases the risk of mortality and MI. However, CKD had no impact on revascularization rates. [ABSTRACT FROM AUTHOR]