• Shengsuo Zhang, Xinmin Wu, Hang Guo, and Li Ma.
• Department of anesthesiology, General Hospital of Beijing military region PLA, Beijing, 100010, China. bzmzk@sohu.com.
• Eur. J. Med. Res. 2015 Mar 15; 20: 25.

AbstractTo assess the efficacy of thoracic epidural anesthesia (TEA) with or without general anesthesia (GA) versus GA in patients who underwent cardiac surgery, PubMed, Embase, the Cochrane online database, and Web of Science were searched with the limit of randomized controlled trials (RCTs) relevant to 'thoracic epidural anesthesia' and 'cardiac surgery'. Studies were identified and data were extracted by two reviewers independently. The quality of included studies was also assessed according to the Cochrane handbook. Outcomes of mortality, cardiac and respiratory functions, and treatment-associated complications were pooled and analyzed. The comprehensive search yielded 2,230 citations, and 25 of them enrolling 3,062 participants were included according to the inclusion criteria. Compared with GA alone, patients received TEA and GA showed reduced risks of death, myocardial infarction, and stroke, though there were no significant differences (P > 0.05). With regard to treatment-related complications, the pooled results for respiratory complications (risk ratio (RR), 0.69; 95% CI: 0.51, 0.91, P < 0.05), supraventricular arrhythmias (RR, 0.61; 95% CI: 0.42, 0.87, P < 0.05), and pain (mean difference (MD), -1.27; 95% CI: -2.20, -0.35, P < 0.05) were 0.69, 0.61, and -1.27, respectively. TEA was also associated with significant reduction of stays in intensive care unit (MD, -2.36; 95% CI: -4.20, -0.52, P < 0.05) and hospital (MD, -1.51; 95% CI: -3.03, 0.02, P > 0.05) and time to tracheal extubation (MD, -2.06; 95% CI:-2.68, -1.45, P < 0.05). TEA could reduce the risk of complications such as supraventricular arrhythmias, stays in hospital or intensive care unit, and time to tracheal extubation in patients who experienced cardiac surgery.

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