title: Society of Thoracic Surgeons score predicts kidney injury in patients not undergoing bypass surgery.
abstract: BACKGROUND
  Acute kidney injury (AKI) is an established indicator of all-cause mortality in a coronary care unit (CCU), and evaluating the risks of renal dysfunction can guide treatment decisions. In this study we used the Society of Thoracic Surgeons (STS) score to predict the incidence of AKI in CCU patients who had not undergone coronary artery bypass surgery (CABG) after a cardiac angiogram.
  
  
  METHODS
  The study cohort comprised 126 patients diagnosed with 2 or 3 coronary vessels disease who did not receive CABG during their hospital course. This study was performed in the CCU of a tertiary referral university hospital between September 2012 and August 2013. The STS score was evaluated with adjustment in all patients and the outcomes of the risk of mortality, morbidity, or mortality and renal failure were selected for predicting assessment. Furthermore, the performance of the STS scores was compared with that of other scoring systems.
  
  
  RESULTS
  A total of 28.5% (36 of 126) of the patients had AKI of varying severity. For predicting AKI, the STS renal failure score was excellent, with areas under the receiver operating characteristic curve of 0.851 ± 0.039, p < 0.001. When compared with other scoring systems, the STS renal failure score demonstrated the highest discriminatory power, the most favorable Youden index, and the highest overall correctness of prediction.
  
  
  CONCLUSIONS
  The STS score is an effective tool for predicting AKI in patients with coronary artery disease who have not undergone CABG. Frequent monitoring of serum creatinine level or early application of AKI biomarkers are warranted for STS renal failure 5.7% or greater.
authors.affiliation: Kidney Research Center, Department of Nephrology, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taipei, Taiwan.
authors.forename: Chih-Hsiang
authors.initials: CH
authors.lastname: Chang
authors.affiliation: Kidney Research Center, Department of Nephrology, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taipei, Taiwan.
authors.forename: Chung-Ming
authors.initials: CM
authors.lastname: Fu
authors.affiliation: Department of Cardiology, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taipei, Taiwan.
authors.forename: Chia-Hung
authors.initials: CH
authors.lastname: Yang
authors.affiliation: Kidney Research Center, Department of Nephrology, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taipei, Taiwan; School of Medicine, Chang Gung University College of Medicine, Taipei, Taiwan.
authors.forename: Pei-Chun
authors.initials: PC
authors.lastname: Fan
authors.affiliation: School of Medicine, Chang Gung University College of Medicine, Taipei, Taiwan.
authors.forename: Ping-Chien
authors.initials: PC
authors.lastname: Li
authors.affiliation: School of Medicine, Chang Gung University College of Medicine, Taipei, Taiwan.
authors.forename: Guo-Yuan
authors.initials: GY
authors.lastname: Hsu
authors.affiliation: Department of Cardiac Surgery, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taipei, Taiwan; School of Medicine, Chang Gung University College of Medicine, Taipei, Taiwan.
authors.forename: Shao-Wei
authors.initials: SW
authors.lastname: Chen
authors.affiliation: Kidney Research Center, Department of Nephrology, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taipei, Taiwan; School of Medicine, Chang Gung University College of Medicine, Taipei, Taiwan.
authors.forename: Chih-Wei
authors.initials: CW
authors.lastname: Yang
authors.affiliation: Department of Cardiology, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taipei, Taiwan; School of Medicine, Chang Gung University College of Medicine, Taipei, Taiwan.
authors.forename: Chun-Chi
authors.initials: CC
authors.lastname: Chen
authors.affiliation: Department of Cardiology, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taipei, Taiwan; School of Medicine, Chang Gung University College of Medicine, Taipei, Taiwan. Electronic address: cyc2356@adm.cgmh.org.tw.
authors.forename: Yung-Chang
authors.initials: YC
authors.lastname: Chen
mesh_terms: D058186:Acute Kidney Injury / Q000453:epidemiology* / Q000209:etiology*; D000368:Aged; D015331:Cohort Studies; D001026:Coronary Artery Bypass; D003324:Coronary Artery Disease / Q000150:complications*; D005260:Female; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D011379:Prognosis; D012307:Risk Factors; D012955:Societies, Medical; D013903:Thoracic Surgery