title: Influence of preoperative coronary collateral circulation on in-hospital mortality in patients undergoing coronary artery bypass graft surgery with intra-aortic balloon pump support.
abstract: BACKGROUND
  Outcomes in patients requiring coronary artery bypass graft (CABG) surgery have been improved with devices such as the intra-aortic balloon pump (IABP). Good coronary collateral circulation (CCC) has been shown to reduce mortality in patients with coronary artery disease (CAD). We aimed to investigate whether poor preoperative CCC grade is a predictor of in-hospital mortality in CABG surgery requiring IABP support.
  
  
  METHODS
  Fifty-five consecutive patients who were undergoing isolated first time on-pump CABG surgery with IABP support were enrolled into this study and CCC of those patients was evaluated.
  
  
  RESULTS
  Twenty-seven patients had poor CCC and 28 patients had good CCC. In-hospital mortality rate in poor CCC group was significantly higher than good CCC group (14 (50%) vs. 4 (13%), P = 0.013). Preoperative hemoglobin level (OR: 0.752; 95% CI, 0.571-0.991, P = 0.043), chronic obstructive pulmonary disease (OR: 6.731; 95% CI, 1.159-39.085, P = 0.034) and poor CCC grade (OR: 5.750; 95% CI, 1.575±20.986, P = 0.008) were associated with post-CABG in-hospital mortality. Poor CCC grade (OR: 4.853; 95% CI, 1.124-20.952, P = 0.034) and preoperative hemoglobin level (OR: 0.624; 95% CI, 0.476-0.954, P = 0.026) were independent predictors of in-hospital mortality after CABG.
  
  
  CONCLUSIONS
  Preoperative poor CCC and hemoglobin are predictors of in-hospital mortality after CABG with IABP support.
authors.affiliation: Department of Cardiology, Adnan Menderes University, Aydin, Turkey. Email: drgungorhasan@yahoo.com.
authors.forename: Hasan
authors.initials: H
authors.lastname: Gungor
authors.affiliation: Department of Cardiology, Adnan Menderes University, Aydin, Turkey.
authors.forename: Cemil
authors.initials: C
authors.lastname: Zencir
authors.affiliation: Department of Physiotherapy, School of Allied Health Sciences, Manipal University, Karnataka, India.
authors.forename: Abraham Samuel
authors.initials: AS
authors.lastname: Babu
authors.affiliation: Department of Cardiology, Adnan Menderes University, Aydin, Turkey.
authors.forename: Cagdas
authors.initials: C
authors.lastname: Akgullu
authors.affiliation: Department of Cardiology, Adnan Menderes University, Aydin, Turkey.
authors.forename: Ufuk
authors.initials: U
authors.lastname: Eryilmaz
authors.affiliation: Department of Cardiology, Cumhuriyet University, Sivas, Turkey.
authors.forename: Ali
authors.initials: A
authors.lastname: Zorlu
authors.affiliation: Department of Cardiology, Adnan Menderes University, Aydin, Turkey.
authors.forename: Mithat
authors.initials: M
authors.lastname: Selvi
authors.affiliation: Department of Cardiology, Adnan Menderes University, Aydin, Turkey.
authors.forename: Sevil
authors.initials: S
authors.lastname: Onay
authors.affiliation: Department of Cardiovascular Surgery, Adnan Menderes University, Aydin, Turkey.
authors.forename: Tunay
authors.initials: T
authors.lastname: Kurtoglu
mesh_terms: D000368:Aged; D003097:Collateral Circulation / Q000502:physiology*; D001026:Coronary Artery Bypass / Q000009:adverse effects / Q000401:mortality*; D005260:Female; D017052:Hospital Mortality; D006801:Humans; D007423:Intra-Aortic Balloon Pumping / Q000009:adverse effects / Q000401:mortality*; D008297:Male; D008875:Middle Aged