title: High preoperative monocyte count/high-density lipoprotein ratio is associated with postoperative atrial fibrillation and mortality in coronary artery bypass grafting.
abstract: The monocyte to high-density lipoprotein ratio has recently emerged as an indicator of inflammation and oxidative stress. The aim of this study was to evaluate the association of the monocyte to high-density lipoprotein ratio with postoperative atrial fibrillation and mortality in coronary artery bypass grafting.
  
  
  
  Six hundred and sixty-two patients who were in sinus rhythm preoperatively and who had isolated coronary artery bypass grafting were retrospectively included in the study. Patients who had atrial fibrillation in the early postoperative period were enrolled in group 1 ( n  = 153); patients who remained in sinus rhythm in the early postoperative period were included in group 2 ( n  = 509). The clinical and demographic data of the patients, biochemical and complete blood count parameters, preoperative monocyte count/high-density lipoprotein cholesterol ratio, and operative and postoperative data were recorded.
  
  
  
  Preoperative monocyte counts ( P  = 0.0001), monocyte count/high-density lipoprotein cholesterol ratio ( P = 0.0001) and C-reactive protein levels ( P  = 0.0001) were significantly increased in group 1. In the first month, 8 patients in group 1 (5.2%) and 5 patients in group 2 (1.0%) died, which was statistically significant ( P  = 0.003). In univariate and multivariate logistic regression analyses, an elevated preoperative monocyte count/high-density lipoprotein cholesterol ratio ( P  = 0.03) and C-reactive protein levels ( P  = 0.0001) were predictors of postoperative atrial fibrillation. Preoperative monocyte counts ( P  = 0.001), monocyte count/high-density lipoprotein cholesterol ratio ( P  = 0.0001) and the use of inotropic support ( P  = 0.0001) were also predictors of mortality in the early postoperative period.
  
  
  
  We have observed that high preoperative monocyte count/ high-density lipoprotein ratio was associated with postoperative atrial fibrillation and mortality after coronary artery bypass grafting operation.
authors.affiliation: Department of Cardiovascular Surgery, Derince Training and Research Hospital, Kocaeli, Turkey.
authors.forename: Hüseyin
authors.initials: H
authors.lastname: Saskin
authors.affiliation: Department of Cardiology, Derince Training and Research Hospital, Kocaeli, Turkey.
authors.forename: Kazim
authors.initials: K
authors.lastname: Serhan Ozcan
authors.affiliation: Department of Cardiovascular Surgery, Derince Training and Research Hospital, Kocaeli, Turkey.
authors.forename: Seyhan
authors.initials: S
authors.lastname: Yilmaz
mesh_terms: D000328:Adult; D000368:Aged; D001281:Atrial Fibrillation / Q000097:blood / Q000209:etiology* / Q000503:physiopathology; D002097:C-Reactive Protein / Q000378:metabolism; D001026:Coronary Artery Bypass / Q000009:adverse effects* / Q000401:mortality; D003324:Coronary Artery Disease / Q000097:blood / Q000601:surgery*; D005260:Female; D006801:Humans; D007958:Leukocyte Count; D008075:Lipoproteins, HDL / Q000097:blood*; D008297:Male; D008875:Middle Aged; D009000:Monocytes / Q000473:pathology*; D011183:Postoperative Complications / Q000097:blood / Q000401:mortality*; D057234:Preoperative Period; D012189:Retrospective Studies; D015996:Survival Rate / Q000639:trends; D014421:Turkey / Q000453:epidemiology
chemical_list: D008075:Lipoproteins, HDL; D002097:C-Reactive Protein
keywords: Atrial fibrillation and mortality; Coronary artery bypass grafting surgery; Monocyte to high density lipoprotein cholesterol ratio