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  • Title: Differential impact of peripheral endothelial dysfunction on subsequent cardiovascular events following percutaneous coronary intervention between chronic kidney disease (CKD) and non-CKD patients.
    Author: Tabata N, Hokimoto S, Akasaka T, Arima Y, Sakamoto K, Yamamoto E, Tsujita K, Izumiya Y, Yamamuro M, Kojima S, Kaikita K, Ogawa H.
    Journal: Heart Vessels; 2016 Jul; 31(7):1038-44. PubMed ID: 26164597.
    Abstract:
    Chronic kidney disease (CKD) status might modify the predictive effect of peripheral endothelial dysfunction on cardiovascular events after percutaneous coronary intervention (PCI). The aim of this study was to examine the differential effect of peripheral endothelial dysfunction on clinical outcome after PCI between CKD and non-CKD patients. We conducted a cohort study of 435 patients following PCI. CKD was defined as estimated glomerular filtration rate <60 mL/min/1.73 m(2). Peripheral endothelial dysfunction was examined using reactive hyperemia-peripheral arterial tonometry index (RHI), and we divided patients into low- and high-natural logarithmic RHI (Ln-RHI) group. The endpoint was a composite of cardiovascular death, nonfatal myocardial infarction, ischemic stroke, hospitalization due to unstable angina pectoris, and coronary revascularization. A total of 56 patients had a cardiovascular event. Patients who suffered a cardiovascular event had significantly lower Ln-RHI than other patients in the non-CKD group (0.46 ± 0.18 versus 0.60 ± 0.25; P = 0.002). Kaplan-Meier analysis demonstrated a significantly higher probability of cardiovascular events in low Ln-RHI patients in the non-CKD group (log-rank test: P = 0.003). Multivariate Cox proportional hazards analysis identified Ln-RHI as an independent and significant predictor of future cardiovascular events in the non-CKD group (HR: 0.096; 95 % CI 0.02-0.47; P = 0.004) but not in the CKD group. There was a differential effect of peripheral endothelial dysfunction on clinical outcome after PCI between CKD and non-CKD patients, and peripheral endothelial dysfunction significantly correlates with subsequent cardiovascular events after PCI in non-CKD patients.
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