title: [Investigations of influential factors of acute renal injury after coronary artery bypass grafting].
abstract: OBJECTIVE
  To investigate the incidence, correlate factors and effect on convalescent of acute kidney injury (AKI) after coronary artery bypass grafting (CABG).
  
  
  METHODS
  Sixty-eight consecutive patients who underwent scheduled CABG were included. AKI was diagnosed according to the diagnostic criteria from expert group of AKI. The patients were divided into AKI group with AKI and control group without AKI. Difference of clinic features was contrasted between the two groups. And multivariable logistic regression modeling was used to identify the risk factors of AKI.
  
  
  RESULTS
  AKI occurred in 27.94% patients (19/68). There was significant difference between the two groups in gender, hypertension, hyperlipemia, number of grafts, the duration of mechanic ventilation, the time of ICU and the length of stay post operation. Hypertension(Wald 3.27, P=0.07, 95% CI 0.85-53.59), number of grafts(Wald 7.67, P=0.01, 95%CI 1.48-9.73), the duration of mechanic ventilation(Wald 4.94, P=0.03, 95%CI 1.00-1.18) were risk factors of AKI in multivariable logistic regression modeling.
  
  
  CONCLUSIONS
  The incidence of AKI was high (27.94%). Female, hypertension, hyperlipemia, number of grafts, the duration of mechanic ventilation were risk factors in monovariance analysis, and AKI may increase the time of ICU and the length of stay post operation. Hypertension, number of grafts, duration of mechanic ventilation were independent risk factors of AKI in multivariable logistic regression model.
authors.affiliation: Department of Cardiac Surgery, Peking University First Hospital, Beijing 100034, China. heart2000@163.com
authors.forename: Xi Hui
authors.initials: XH
authors.lastname: Li
authors.forename: Feng
authors.initials: F
authors.lastname: Xiao
authors.forename: Yan
authors.initials: Y
authors.lastname: Li
authors.forename: Jin
authors.initials: J
authors.lastname: Wang
authors.forename: Bo
authors.initials: B
authors.lastname: Song
authors.forename: Yang
authors.initials: Y
authors.lastname: Yang
authors.forename: Wei Qiang
authors.initials: WQ
authors.lastname: Xin
authors.forename: Ying Li
authors.initials: YL
authors.lastname: DU
authors.forename: Nai Qing
authors.initials: NQ
authors.lastname: Song
authors.forename: Ming Li
authors.initials: ML
authors.lastname: Zhang
mesh_terms: D058186:Acute Kidney Injury / Q000453:epidemiology / Q000209:etiology*; D000368:Aged; D000789:Angina, Unstable / Q000601:surgery*; D002681:China / Q000453:epidemiology; D001026:Coronary Artery Bypass / Q000009:adverse effects*; D005260:Female; D006801:Humans; D006973:Hypertension / Q000150:complications; D015994:Incidence; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D009203:Myocardial Infarction / Q000601:surgery*; D011183:Postoperative Complications / Q000209:etiology*; D012307:Risk Factors