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  • Title: Perioperative statin therapy is associated with a significant and dose-dependent reduction of adverse cardiovascular outcomes after coronary artery bypass graft surgery.
    Author: Ouattara A, Benhaoua H, Le Manach Y, Mabrouk-Zerguini N, Itani O, Osman A, Landi M, Riou B, Coriat P.
    Journal: J Cardiothorac Vasc Anesth; 2009 Oct; 23(5):633-8. PubMed ID: 19362495.
    Abstract:
    OBJECTIVE: The aim of this study was to determine whether perioperative statin therapy was associated with a dose-dependent decrease in adverse cardiovascular events after coronary artery bypass graft (CABG) surgery. DESIGN: A prospective observational study. SETTING: A cardiovascular anesthesia unit in a university hospital. PARTICIPANTS: Four hundred eighteen consecutive patients undergoing CABG surgery between October 2004 and October 2005. INTERVENTIONS: Patients were divided in 2 groups depending on whether their preoperative treatment included statins or not. In patients receiving statins, high- and low-dose regimens were respectively defined as a regimen recognized to induce a theoretic reduction of low-density lipoprotein cholesterol level equal to 45% (n = 87) or <45% (n = 258). In treated patients, statin therapy was maintained until the day of surgery and was restarted soon thereafter. MEASUREMENTS AND MAIN RESULTS: The measured endpoint was adverse in-hospital cardiovascular outcomes including heart failure and/or malignant arrhythmia and/or cardiac death. Stepwise logistic regression and a multivariate analysis of propensity-matched cohort were used for analysis of the findings. After adjustment for propensity score, statin therapy was found to produce a significant reduction in cardiovascular outcomes (odds ratio = 0.56; 95% confidence interval [CI], 0.32-0.96, p < 0.05). By using multivariate analysis, the odds ratio for cardiovascular outcomes in patients receiving high-dose statins compared with those treated by low-dose statins was 0.62 (95% CI, 0.41-0.93; p < 0.05). CONCLUSION: Statin therapy is associated with a significant and dose-dependent reduction in adverse cardiovascular events after CABG surgery. However, further randomized trials still require confirming a causal association between statins and better postoperative outcomes and evaluating the tolerance of such perioperative therapy.
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