title: Do intraoperative variables have an effect on the timing of tracheal extubation after coronary artery bypass graft surgery?
abstract: OBJECTIVE
  The purpose of this study was to investigate whether any intraoperative variable had a significant effect on extubation time after coronary artery bypass graft surgery.
  
  
  METHODS
  Study design was a retrospective study.
  
  
  METHODS
  Study took place in 1 cardiac center in the United Kingdom that had 1000 cases per year.
  
  
  METHODS
  Eighty-nine patients had coronary artery bypass graft surgery in the first 6 months of 1998 performed by one consultant cardiac surgeon.
  
  
  METHODS
  Study measures included intraoperative variables (number of vessels grafted, time on cardiopulmonary bypass [CPB], length of the operation, use of internal mammary artery) and extubation time.
  
  
  RESULTS
  Mean extubation time was 4.97 hours. On analysis via linear regression no intraoperative variables were found to be statistically significant (P = .05) to extubation time.
  
  
  CONCLUSIONS
  This study identified that early extubation can be achieved safely. Although no variable was found to have a significant effect on extubation time, the relationship between CPB and extubation may have been attributed to the low mean CPB time within the study (49.1 minutes). The relationship between cardiac status, ischemia, and the timing of extubation does warrant additional exploration.
authors.affiliation: School of Health Care/School of Biological and Molecular Sciences, Oxford Brookes University, Oxford, United Kingdom. hewalthall@brookes.ac.uk
authors.forename: Helen
authors.initials: H
authors.lastname: Walthall
authors.forename: Steve
authors.initials: S
authors.lastname: Ray
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001026:Coronary Artery Bypass / Q000379:methods*; D005260:Female; D006801:Humans; D007442:Intubation, Intratracheal; D016014:Linear Models; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D013997:Time Factors; D006113:United Kingdom