title: The effects of prophylactic coronary revascularization or medical management on patient outcomes after noncardiac surgery--a meta-analysis.
abstract: OBJECTIVE
  The benefits of prophylactic coronary revascularization for patients undergoing noncardiac surgery are uncertain. The purpose of this study was to systematically evaluate the effect of coronary revascularization and medical management on short- and long-term outcomes after noncardiac surgery.
  
  
  METHODS
  Ten electronic databases including MEDLINE and EMBASE (1980 to February 2006), and bibliographies of included articles were searched without language restrictions. Studies comparing effects of coronary revascularization and medical management before noncardiac surgery were included. Patient outcome data including perioperative mortality, myocardial infarction, long-term mortality, or late adverse cardiac events were extracted and entered into a meta-analysis.
  
  
  RESULTS
  The quality of published evidence was modest, comprising one randomized controlled trial and six retrospective studies. A total of 3,949 patients undergoing high-risk noncardiac surgery were included in the quantitative analysis. There was no significant difference between coronary revascularization and medical management groups with regards to postoperative mortality and myocardial infarction; the odds ratios (95% confidence intervals) were 0.85 (0.48-1.50) and 0.95 (0.44-2.08), respectively. There were no long-term outcome benefits associated with prophylactic coronary revascularization; the odds ratios (95% confidence intervals) were 0.81 (0.40-1.63) and 1.65 (0.70-3.86) for long-term mortality and late adverse cardiac events, respectively.
  
  
  CONCLUSIONS
  In patients with stable coronary artery disease, prophylactic coronary revascularization before high-risk noncardiac surgery does not confer any beneficial effects, when compared with optimized medical management, in terms of perioperative mortality, myocardial infarction, long-term mortality, or adverse cardiac events.
authors.affiliation: Department of Dental Anesthesiology, Faculty of Dentistry, Toronto Western Hospital, University of Toronto, Ontario M5T 2S8, Canada.
authors.forename: Elise Y W
authors.initials: EY
authors.lastname: Wong
authors.forename: Herenia P
authors.initials: HP
authors.lastname: Lawrence
authors.forename: David T
authors.initials: DT
authors.lastname: Wong
mesh_terms: D000368:Aged; D016001:Confidence Intervals; D003324:Coronary Artery Disease / Q000401:mortality / Q000601:surgery*; D017558:Elective Surgical Procedures / Q000009:adverse effects / Q000401:mortality*; D006801:Humans; D008875:Middle Aged; D009203:Myocardial Infarction / Q000209:etiology / Q000401:mortality; D009204:Myocardial Revascularization; D016017:Odds Ratio; D011300:Preoperative Care; D012307:Risk Factors; D015996:Survival Rate; D013997:Time Factors; D016896:Treatment Outcome