Abstract
AimBoth kidney dysfunction and diabetes mellitus (DM) predict long-term poor prognosis in patients with coronary artery disease (CAD). We aimed to evaluate the clinical outcomes according to the combined status of DM and different stages of kidney dysfunction in CAD patients. MethodsFrom January 2013 to December 2013, 9293 eligible patients hospitalized for percutaneous coronary intervention (PCI) at Fuwai hospital were followed up for major adverse cardiovascular and cerebrovascular events (MACCEs), a composite of all-cause mortality, myocardial infarction and stroke. Baseline kidney function was considered as stage I: normal or high kidney function; stage II: mild dysfunction and stage III: moderate dysfunction according to estimated glomerular filtration rate (eGFR). Upon baseline kidney function, diabetic and non-diabetic patients were divided into six groups. ResultsDuring a median follow-up of 2.4 years, 326 (3.5%) MACCEs occurred. Compared to patients in the stage I/non-DM group, patients in the stage II/DM and stage III/DM groups had significantly increased MACCE risk [adjusted hazard ratio (aHR), 1.53; 95% confidence interval (CI), 1.09–2.15; P = 0.014; aHR, 3.00; 95%CI, 1.74–5.18; P < 0.002, respectively]. Additionally, there were J-shaped associations of eGFR with MACCE risk regardless of glycemic metabolism status after adjusted for confounders. Furthermore, moderate kidney dysfunction conferred an increased MACCE risk in diabetic patients with uncontrolled glycemia (aHR, 2.93; 95%CI, 1.48–5.78; P = 0.002). ConclusionsDM with mild or moderate kidney dysfunction is associated with poor prognosis in CAD patients. Categorical classification of patients with DM and kidney dysfunction could provide prognostic information for risk stratification of CAD patients.
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