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Preoperative statin therapy is not associated with a decrease in the incidence of delirium after cardiac operations.
MedLine Citation:
PMID:  22541176     Owner:  NLM     Status:  In-Data-Review    
BACKGROUND: Delirium after cardiac operations is associated with significant morbidity and death. Statins have been recently suggested to exert protective cerebral effects. This study investigated whether preoperative statins were associated with decreased incidence of postoperative delirium in patients undergoing coronary artery bypass grafting.
METHODS: The study enrolled 4,659 consecutive patients (21% women; age, 67.8 ± 9.2 years) undergoing coronary artery bypass grafting. A propensity score-based optimal-matching algorithm was used to match 1,577 patients receiving preoperative statins with a control group (1:1). Patients were screened for delirium in the intensive care unit according to the Confusion Assessment Method for the intensive care unit.
RESULTS: Delirium affected 89 patients (3%), and preoperative statin administration was not multivariably associated with a decreased incidence of delirium (odds ratio, 1.52; 95% confidence interval, 0.97 to 2.37; p = 0.18) and was also unrelated to a delirium decrease in patient subgroups undergoing isolated coronary artery bypass grafting (odds ratio, 1.31; 95% confidence interval, 0.68 to 2.52; p = 0.51) or combined valvular procedures (odds ratio, 1.72; 95% confidence interval, 0.96 to 3.07, p = 0.08). Similar results were observed for age groups and cardiopulmonary bypass durations. Patients affected by postoperative delirium experienced a longer hospital stay (25th to 75th percentile) of 11 (7 to 18 days) vs 7 days (7 to 8 days, p < 0.001) and 12% hospital mortality vs 1% (p < 0.001).
CONCLUSIONS: Preoperative statins were not associated with a decreased incidence of delirium in patients undergoing coronary revascularization.
Giovanni Mariscalco; Marzia Cottini; Marco Zanobini; Stefano Salis; Carmelo Dominici; Maciej Banach; Francesco Onorati; Gabriele Piffaretti; Giovanna Covaia; Marco Realini; Cesare Beghi
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Annals of thoracic surgery     Volume:  93     ISSN:  1552-6259     ISO Abbreviation:  Ann. Thorac. Surg.     Publication Date:  2012 May 
Date Detail:
Created Date:  2012-04-30     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  15030100R     Medline TA:  Ann Thorac Surg     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  1439-47     Citation Subset:  AIM; IM    
Copyright Information:
Copyright © 2012 The Society of Thoracic Surgeons. Published by Elsevier Inc. All rights reserved.
Department of Surgical and Morphological Sciences, Cardiac Surgery Unit, Varese University Hospital, University of Insubria, Varese, Italy.
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