Long-term impact of renin-angiotensin system inhibitors for secondary prevention in patients with chronic kidney disease who underwent percutaneous coronary intervention

Introduction: The long-term impact of renin-angiotensin system (RAS) inhibitors for secondary prevention in patients with chronic kidney disease (CKD) and coexisting coronary artery disease remains unclear.Methods: Altogether, 1160 consecutive patients with CKD (mean age, 70 +/- 9 years; 78% men) who underwent their first percutaneous coronary intervention (PCI) between 2000 and 2018 were included and analyzed. Based on their RAS inhibitor use, 674 patients (58%) were allocated to the RAS inhibitor group, and 486 patients (42%) were allocated to the non-RAS inhibitor group. This study evaluated the incidence of 3-point major adverse cardiovascular events (3P-MACE), including cardiovascular death, non-fatal acute coronary syndrome and non-fatal stroke, admission for heart failure (HF), target vessel revascularization (TVR), and all-cause death.Results: During a median follow-up duration of 7.8 years, 280 patients (24.1%) developed 3P-MACE, 134 patients (11.6%) hospitalized for HF, 171 patients (14.7%) underwent TVR, and 348 patients (30.0%) died of any causes. The cumulative incidence rate of 3P-MACE in the RAS inhibitor group was a significantly lower than in the non-RAS inhibitor group (31.7% vs. 39.0%, log-rank test, p=0.034), however, that of admission for HF in the RAS inhibitor group was a significantly higher than in the non-RAS inhibitor group (28.1% vs. 13.3%, log-rank test, p<0.001). The subgroup of preserved ejection fraction, non-acute myocardial infarction, and non-proteinuria tended to promote the onset of HF rather than cardiovascular prevention by RAS inhibitors.Discussion/Conclusion: The long-term RAS inhibitor use for patients with CKD after PCI might prevent cardiovascular events, but increase the risk of HF.