title: Preoperative poor coronary collateral circulation can predict the development of atrial fibrillation after coronary artery bypass graft surgery.
abstract: OBJECTIVE
  Coronary collateral circulation (CCC) helps to protect and preserve myocardium from episodes of ischemia, and reduce angina symptoms, arrhythmia, and cardiovascular events. Atrial fibrillation (AF) is the most frequent form of arrhythmia after coronary artery bypass graft (CABG) surgery. The aim of this study was to investigate the association between CCC and the development of AF in patients undergoing CABG surgery.
  
  
  METHODS
  A total of 165 patients (mean age 63±10 years, 74% men, 26% women) who were undergoing CABG surgery at our department were enrolled into this study. Patients were categorized into two groups according to preoperative CCC using the Rentrop method.
  
  
  RESULTS
  Of the patients, 79 had poor CCC and 89 had good CCC. The AF incidence rate in the poor collateral group was significantly higher than that in the good collateral group [37 (49%) vs. 12 (14%), P<0.001]. In univariate analysis, age, left atrium size, and poor CCC grade were associated with AF after CABG surgery. Multivariate analysis showed that only poor CCC grade (odds ratio: 11.500; 95% confidence interval 3.977-33.253, P<0.001) was an independent predictor of the development of AF after adjustment of other potential confounders in patients undergoing CABG surgery.
  
  
  CONCLUSIONS
  The present study showed that preoperative poor CCC is a powerful predictor of the development of AF after CABG surgery.
authors: Departments of aCardiology bCardiovascular Surgery, Faculty of Medicine, Adnan Menderes University, Aydin cDepartment of Cardiology, Malatya Hospital, Malatya, Turkey.
authors: Hasan
authors: H
authors: Gungor
authors: Ufuk
authors: U
authors: Eryilmaz
authors: Cagdas
authors: C
authors: Akgullu
authors: Cemil
authors: C
authors: Zencir
authors: Tunay
authors: T
authors: Kurtoglu
authors: Mithat
authors: M
authors: Selvi
authors: Sevil
authors: S
authors: Onay
authors: Ali
authors: A
authors: Zorlu
authors: Ceyhun
authors: C
authors: Ceyhan
authors: Alper
authors: A
authors: Onbasili
authors: Tarkan
authors: T
authors: Tekten
mesh_terms: D000368:Aged; D001281:Atrial Fibrillation / Q000453:epidemiology*; D016009:Chi-Square Distribution; D003097:Collateral Circulation; D001026:Coronary Artery Bypass / Q000009:adverse effects*; D003324:Coronary Artery Disease / Q000175:diagnosis / Q000503:physiopathology / Q000601:surgery*; D003326:Coronary Circulation; D005260:Female; D006801:Humans; D015994:Incidence; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D016017:Odds Ratio; D012307:Risk Factors; D014421:Turkey / Q000453:epidemiology