title: Does off-pump coronary artery bypass reduce mortality, morbidity, and resource utilization when compared with conventional coronary artery bypass? A meta-analysis of randomized trials.
abstract: The authors undertook a meta-analysis of 37 randomized trials (3369 patients) of off-pump coronary artery bypass surgery versus conventional coronary artery bypass surgery. No significant differences were found for 30-day mortality (odds ratio [OR], 1.02; 95% confidence interval [CI], 0.58-1.80), myocardial infarction (OR, 0.77; 95%CI, 0.48-1.26), stroke (OR, 0.68; 95%CI, 0.33-1.40), renal dysfunction, intraaortic balloon pump, wound infection, rethoracotomy, or reintervention. However, off-pump coronary artery bypass surgery significantly decreased atrial fibrillation (OR, 0.58; 95%CI, 0.44-0.77), transfusion (OR, 0.43; 95%CI, 0.29-0.65), inotrope requirements (OR, 0.48; 95%CI, 0.32-0.73), respiratory infections (OR, 0.41; 95%CI, 0.23-0.74), ventilation time (weighted mean difference, -3.4 h; 95%CI, -5.1 to -1.7 h), intensive care unit stay (weighted mean difference, -0.3 days; 95%CI -0.6 to -0.1 days), and hospital stay (weighted mean difference, -1.0 days; 95%CI -1.5 to -0.5 days). Patency and neurocognitive function results were inconclusive. In-hospital and 1-yr direct costs were generally higher for conventional coronary artery bypass surgery versus off-pump coronary artery bypass surgery. Therefore, this meta-analysis demonstrates that mortality, stroke, myocardial infarction, and renal failure were not reduced in off-pump coronary artery bypass surgery surgery; however, selected short-term and mid-term clinical and resource outcomes were improved compared with conventional coronary artery bypass surgery.
authors.affiliation: Department of Anesthesia & Perioperative Medicine, London Health Sciences Centre, University of Western Ontario, London, Ontario, Canada. davy.cheng@lhsc.on.ca
authors.forename: Davy C
authors.initials: DC
authors.lastname: Cheng
authors.forename: Daniel
authors.initials: D
authors.lastname: Bainbridge
authors.forename: Janet E
authors.initials: JE
authors.lastname: Martin
authors.forename: Richard J
authors.initials: RJ
authors.lastname: Novick
mesh_terms: D001026:Coronary Artery Bypass / Q000009:adverse effects* / Q000191:economics / Q000401:mortality; D047549:Coronary Artery Bypass, Off-Pump; D003627:Data Interpretation, Statistical; D023381:Endpoint Determination; D005112:Extracorporeal Circulation / Q000009:adverse effects* / Q000191:economics / Q000401:mortality; D006801:Humans; D011183:Postoperative Complications / Q000191:economics / Q000453:epidemiology* / Q000523:psychology; D011788:Quality of Life; D016032:Randomized Controlled Trials as Topic; D040841:Resource Allocation; D016896:Treatment Outcome