Objectives: The authors performed a meta-analysis to evaluate whether levosimendan is associated with improved survival in patients undergoing cardiac surgery. Design: A meta-analysis. Setting: Hospitals. Participants: A total of 440 patients from 10 randomized controlled studies were included in the analysis. Interventions: None. Measurments and Main Results: Four investigators independently searched BioMedCentral and PubMed. Inclusion criteria were random allocation to treatment, comparison of levosimendan versus control, and cardiac surgery patients. Exclusion criteria were duplicate publications, nonhuman experimental studies, and no mortality data. The primary endpoint was postoperative mortality. Levosimendan was associated with a significant reduction in postoperative mortality (11/235 [4.7%] in the levosimendan group v 26/205 [12.7%] in the control arm, odds ratio = 0.35 [0.18-0.71], p for effect = 0.003, p for heterogeneity = 0.22, I2= 27.4% with 440 patients included), cardiac troponin release, and atrial fibrillation. No difference was found in terms of myocardial infarction, acute renal failure, time on mechanical ventilation, intensive care unit, and hospital stay. Conclusions: Levosimendan has cardioprotective effects that could result in a reduced postoperative mortality. A large randomized controlled study is warranted in this setting. Â© 2010 Elsevier Inc. All rights reserved.
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