title: [Relationship between estimated glomerular filtration rate level and clinical characteristics and outcome in patients with angiographic coronary artery disease and normal serum creatinine].
abstract: OBJECTIVE
  To explore the relationship between estimated glomerular filtration rate level and clinical characteristics and outcome in coronary artery disease (CAD) patients with normal serum creatinine.
  
  
  METHODS
  A total of 548 hospitalized and angiographic CAD patients with normal fasting serum creatinine were enrolled. The kidney function was estimated by using the abbreviated modification of diet in renal disease (MDRD) study equation. Patients were divided into three groups according to eGFR tertiles: high eGFR group (eGFR > 88.15 ml×min(-1)×1.73 m(-2), n = 184); intermediate group ZU(70.30 ml× min(-1)×1.73 m(-2) < eGFR ≤ 88.15 ml×min(-1)×1.73 m(-2), n = 187); low eGFR group (eGFR ≤ 70.30 ml × min(-1)×1.73 m(-2), n = 177). Clinical data and cardiovascular risk factors were recorded after admission and during (14.02 ± 8.31) months follow up. The primary end point was combined major adverse cardiovascular and cerebral events (MACCE) including death, targeted vascular revascularization, non-fatal myocardial infarction, rehospitalization due to unstable angina and heart failure, and transient ischemic attack (TIA) and stroke.
  
  
  RESULTS
  Patients in intermediate and low eGFR groups were older, more males, had more severe coronary artery disease, higher level of hsCRP, higher incidence of hypertension, and lower smoking rate than those in high eGFR group (all P < 0.05). A total of 89 MACCE were recorded during follow up. The level of eGFR was significantly lower in patients with MACCE than patients without MACCE [(73.76 ± 19.81) ml×min(-1)×1.73 m(-2) vs. (84.97 ± 23.42) ml×min(-1)×1.73 m(-2), P < 0.05]. Univariate and multivariate Cox regression analysis showed that eGFR was an independent predictor of MACCE in patients with CAD (univariate analysis: RR = 0.99, 95%CI:0.973-0.997, P < 0.05; multivariate analysis: RR = 0.98, 95%CI:0.976-0.998, P < 0.05). Kaplan-Meier survival analysis suggested that patients with low eGFR was linked with a decreased event free survival ratio (log-rank χ(2) = 7.271, P < 0.05).
  
  
  CONCLUSIONS
  eGFR level in CAD patients with normal serum creatinine is associated with coronary artery severity, inflammation level and serves as an independent predictor for MACCE in this patient cohort.
authors.affiliation: Division of Cardiology, Beijing Anzhen Hospital Capital Medical University,Beijing Institution of Heart Lung and Blood Vessel Disease, Beijing 100029, China.
authors.forename: Quan
authors.initials: Q
authors.lastname: Li
authors.forename: Yue-chun
authors.initials: YC
authors.lastname: Gao
authors.forename: Ji-qiang
authors.initials: JQ
authors.lastname: He
authors.forename: Teng-yong
authors.initials: TY
authors.lastname: Jiang
authors.forename: Xue-jun
authors.initials: XJ
authors.lastname: Ren
authors.forename: Fang
authors.initials: F
authors.lastname: Chen
mesh_terms: D000368:Aged; D003324:Coronary Artery Disease / Q000097:blood / Q000175:diagnosis* / Q000503:physiopathology; D003404:Creatinine / Q000097:blood; D005260:Female; D005500:Follow-Up Studies; D005919:Glomerular Filtration Rate; D006801:Humans; D008297:Male; D008875:Middle Aged; D011379:Prognosis
chemical_list: D003404:Creatinine