title: The evaluation of preoperative right ventricular diastolic dysfunction on coronary artery disease patients with left ventricular dysfunction.
abstract: OBJECTIVE
  Early death following coronary artery bypass graft (CABG) surgery tends to occur in coronary heart disease (CHD) patients with significantly decreased left ventricular function.
  
  
  METHODS
  The clinical data of 231 patients with preoperative left ventricular ejection fraction (LVEF) ≤ 35% who underwent CABG were retrospectively analyzed from June 2007 to October 2012. The patients were divided into 2 groups: group A contained 39 patients who suffered early postoperative death and group B contained 192 patients who had a successful CABG outcome.
  
  
  RESULTS
  Multivariate analysis demonstrated that only significantly decreased preoperative right ventricular (RV) diastolic function (increase in Et/Et') and lack of suitable target bypass vessels were independent risk factors for early death after CABG surgery in patients with severely impaired left ventricular function (P = 0.003 and 0.002, respectively). Other factors, including age, intra-aortic balloon pump (IABP) implantation, ischemic mitral regurgitation (IMR) treatment, left atrial internal diameter, and end-diastolic left ventricular internal diameter, were not associated with early death following CABG. Preoperative Et/Et' ≥ 10 was significantly associated with early death after CABG in patients with severely impaired left ventricular function (χ(2) = 11.55, P < 0.001, odds ratio [OR] = 17.54, 95% confidence interval [CI]: 2.12-383.16).
  
  
  CONCLUSIONS
  Decreased preoperative RV diastolic function and lack of suitable target bypass vessels are independent risk factors for early death following CABG in patients with severely impaired left ventricular function. Therefore, assessment of preoperative RV diastolic function will be helpful in predicting early death after CABG in these patients. Additionally, Et/Et' ≥ 10 is significantly associated with early death after CABG.
authors: Department of Cardiac Surgery, General Hospital of Shenyang Military Area Command, Shenyang City, China.
authors: Yan
authors: Y
authors: Jin
authors: Huishan
authors: H
authors: Wang
authors: Zengwei
authors: Z
authors: Wang
authors: Hui
authors: H
authors: Jiang
authors: Dengshun
authors: D
authors: Tao
authors: Haibo
authors: H
authors: Wu
mesh_terms: D015331:Cohort Studies; D017023:Coronary Angiography / Q000379:methods; D001026:Coronary Artery Bypass / Q000379:methods / Q000401:mortality*; D003324:Coronary Artery Disease / Q000000981:diagnostic imaging / Q000401:mortality / Q000601:surgery*; D018618:Echocardiography, Doppler, Color; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D016015:Logistic Models; D008297:Male; D015999:Multivariate Analysis; D011237:Predictive Value of Tests; D011300:Preoperative Care / Q000379:methods; D012189:Retrospective Studies; D012720:Severity of Illness Index; D013318:Stroke Volume / Q000502:physiology*; D016019:Survival Analysis; D016896:Treatment Outcome; D018487:Ventricular Dysfunction, Left / Q000000981:diagnostic imaging* / Q000401:mortality / Q000503:physiopathology; D018497:Ventricular Dysfunction, Right / Q000000981:diagnostic imaging* / Q000401:mortality / Q000503:physiopathology
keywords: coronary artery bypass graft surgery (CABG); echocardiography; left ventricular ejection fraction; right ventricular function