Objectives: Numerous studies have suggested that statins have beneficial non-lipid-lowering effects, including reduction of systemic inflammatory response following surgery. We wanted to evaluate the effect of preoperative statin treatment on complications and operative mortality after coronary arterial revascularization.
Design: We performed a retrospective study of 720 consecutive patients who underwent on-pump coronary artery bypass grafting (CABG) (n = 513) or off-pump (OPCAB) (n = 207) in Iceland from 2002-2006. Patients taking statins preoperatively (n = 529) were compared with those not taking statins (n = 191). Predictors of complications and operative mortality were evaluated by univariate and multivariate analysis.
Results: Cardiovascular risk profiles were similar. However, hypertension was more common in the statin group but EuroSCORE was slightly lower. Operative mortality was significantly lower in patients taking statins (1.7% vs. 5.8%, p < 0.001). There were no significant differences in the incidence of major complications. Multivariate analysis showed that preoperative statin treatment was an independent predictor of lower operative mortality (OR = 0.33, p = 0.043), even after adjusting for EuroSCORE, acute operations, advanced age, or other medications.
Conclusions: In this non- randomized study, patients taking statins had lower operative mortality than the controls after adjusting for multiple confounders. The reason for this might be linked to pleiotropic effects of statins.