Comparison of the prognosis between complete and incomplete revascularization among moderate to severe chronic kidney disease patients with acute coronary syndrome

Abstract Background Complete revascularization (CR) in acute coronary syndrome patients with multivessel disease (MVD) is recommended in current clinical practice guidelines. However, the benefit of CR in moderate to severe chronic kidney disease (CKD) patients remains controversial. We aimed to compare the clinical outcomes between complete and incomplete revascularization among moderate to severe CKD patients who presented with ACS. Methods Of 1,924 ACS patients who underwent percutaneous coronary intervention (PCI) in our center, 127 patients were CKD. CR was defined as residual SYNTAX (Synergy Between Percutaneous Coronary Intervention with Taxus and Cardiac Surgery) score ≤ 3. The primary outcome was the patient oriented clinical outcome (POCO) at 1 year, including all-cause death, any myocardial infarction, any revascularization, and heart failure requiring hospitalization. Results The mean age of the patients was 73.89±9.07 years. The median estimated glomerular filtration rate (eGFR) was 32.56±10.68 ml per minute per 1.73 m2. The rate of POCO at 1 year was significantly lower in the CR group (16.3% vs 39.3%; HR 0.36; 95%CI, 0.16-0.81; p=0.014). The primary outcome was mainly driven by 1-year all-cause death which was significantly lower in the CR group (14.0% vs 39.3%; HR 0.32; 95%CI 0.13-0.76; p=0.017). The rate of initiation of renal replacement therapy was comparable (4.7% vs 2.4%; p=0.55). Conclusion CR with a target SYNTAX score ≤ 3 improved 1-year prognosis of POCO and all-cause death in ACS patients with moderate to severe CKD without increasing the rates of renal replacement therapy.1-year POCOPrespecified Subgroup Analysis of POCO