Pre-admission statin use and in-hospital severity of 2009 pandemic influenza A(H1N1) disease.

<h4>Background</h4>Statins are drugs that are used to lower plasma cholesterol levels. Recently, contradictory claims have been made about possible additional effects of statins on progression of a variety of inflammatory disorders, including infections. We therefore examined the clinica...

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Autores principales: Stephen J Brett, Puja Myles, Wei Shen Lim, Joanne E Enstone, Barbara Bannister, Malcolm G Semple, Robert C Read, Bruce L Taylor, Jim McMenamin, Karl G Nicholson, Jonathan S Nguyen-Van-Tam, Peter J M Openshaw, Influenza Clinical Information Network (FLU-CIN)
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Publicado: Public Library of Science (PLoS) 2011
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spelling oai:doaj.org-article:70aa68bd0cd54fcb96b882452023d6b92021-11-18T06:55:14ZPre-admission statin use and in-hospital severity of 2009 pandemic influenza A(H1N1) disease.1932-620310.1371/journal.pone.0018120https://doaj.org/article/70aa68bd0cd54fcb96b882452023d6b92011-04-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/21541017/?tool=EBIhttps://doaj.org/toc/1932-6203<h4>Background</h4>Statins are drugs that are used to lower plasma cholesterol levels. Recently, contradictory claims have been made about possible additional effects of statins on progression of a variety of inflammatory disorders, including infections. We therefore examined the clinical course of patients admitted to hospital with 2009 pandemic influenza A(H1N1), who were or weren't taking statins at time of admission.<h4>Methods</h4>A retrospective case-control study was performed using the United Kingdom Influenza Clinical Information Network (FLU-CIN) database, containing detailed information on 1,520 patients admitted to participating hospitals with confirmed 2009 pandemic influenza A(H1N1) infection between April 2009 and January 2010. We confined our analysis to those aged over 34 years. Univariate analysis was used to calculate unadjusted odds ratios (OR) and 95 percent confidence intervals (95%CI) for factors affecting progression to severe outcome (high dependency or intensive care unit level support) or death (cases); two multivariable logistic regression models were then established for age and sex, and for age, sex, obesity and "indication for statin" (e.g., heart disease or hypercholesterolaemia).<h4>Results</h4>We found no statistically significant association between pre-admission statin use and severity of outcome after adjustment for age and sex [adjusted OR: 0.81 (95% CI: 0.46-1.38); n = 571]. After adjustment for age, sex, obesity and indication for statin, the association between pre-admission statin use and severe outcome was not statistically significant; point estimates are compatible with a small but clinically significant protective effect of statin use [adjusted OR: 0.72 (95% CI: 0.38-1.33)].<h4>Conclusions</h4>In this group of patients hospitalized with pandemic influenza, a significant beneficial effect of pre-admission statin use on the in-hospital course of illness was not identified. Although the database from which these observations are derived represents the largest available suitable UK hospital cohort, a larger study would be needed to confirm whether there is any benefit in this setting.Stephen J BrettPuja MylesWei Shen LimJoanne E EnstoneBarbara BannisterMalcolm G SempleRobert C ReadBruce L TaylorJim McMenaminKarl G NicholsonJonathan S Nguyen-Van-TamPeter J M OpenshawInfluenza Clinical Information Network (FLU-CIN)Public Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 6, Iss 4, p e18120 (2011)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Stephen J Brett
Puja Myles
Wei Shen Lim
Joanne E Enstone
Barbara Bannister
Malcolm G Semple
Robert C Read
Bruce L Taylor
Jim McMenamin
Karl G Nicholson
Jonathan S Nguyen-Van-Tam
Peter J M Openshaw
Influenza Clinical Information Network (FLU-CIN)
Pre-admission statin use and in-hospital severity of 2009 pandemic influenza A(H1N1) disease.
description <h4>Background</h4>Statins are drugs that are used to lower plasma cholesterol levels. Recently, contradictory claims have been made about possible additional effects of statins on progression of a variety of inflammatory disorders, including infections. We therefore examined the clinical course of patients admitted to hospital with 2009 pandemic influenza A(H1N1), who were or weren't taking statins at time of admission.<h4>Methods</h4>A retrospective case-control study was performed using the United Kingdom Influenza Clinical Information Network (FLU-CIN) database, containing detailed information on 1,520 patients admitted to participating hospitals with confirmed 2009 pandemic influenza A(H1N1) infection between April 2009 and January 2010. We confined our analysis to those aged over 34 years. Univariate analysis was used to calculate unadjusted odds ratios (OR) and 95 percent confidence intervals (95%CI) for factors affecting progression to severe outcome (high dependency or intensive care unit level support) or death (cases); two multivariable logistic regression models were then established for age and sex, and for age, sex, obesity and "indication for statin" (e.g., heart disease or hypercholesterolaemia).<h4>Results</h4>We found no statistically significant association between pre-admission statin use and severity of outcome after adjustment for age and sex [adjusted OR: 0.81 (95% CI: 0.46-1.38); n = 571]. After adjustment for age, sex, obesity and indication for statin, the association between pre-admission statin use and severe outcome was not statistically significant; point estimates are compatible with a small but clinically significant protective effect of statin use [adjusted OR: 0.72 (95% CI: 0.38-1.33)].<h4>Conclusions</h4>In this group of patients hospitalized with pandemic influenza, a significant beneficial effect of pre-admission statin use on the in-hospital course of illness was not identified. Although the database from which these observations are derived represents the largest available suitable UK hospital cohort, a larger study would be needed to confirm whether there is any benefit in this setting.
format article
author Stephen J Brett
Puja Myles
Wei Shen Lim
Joanne E Enstone
Barbara Bannister
Malcolm G Semple
Robert C Read
Bruce L Taylor
Jim McMenamin
Karl G Nicholson
Jonathan S Nguyen-Van-Tam
Peter J M Openshaw
Influenza Clinical Information Network (FLU-CIN)
author_facet Stephen J Brett
Puja Myles
Wei Shen Lim
Joanne E Enstone
Barbara Bannister
Malcolm G Semple
Robert C Read
Bruce L Taylor
Jim McMenamin
Karl G Nicholson
Jonathan S Nguyen-Van-Tam
Peter J M Openshaw
Influenza Clinical Information Network (FLU-CIN)
author_sort Stephen J Brett
title Pre-admission statin use and in-hospital severity of 2009 pandemic influenza A(H1N1) disease.
title_short Pre-admission statin use and in-hospital severity of 2009 pandemic influenza A(H1N1) disease.
title_full Pre-admission statin use and in-hospital severity of 2009 pandemic influenza A(H1N1) disease.
title_fullStr Pre-admission statin use and in-hospital severity of 2009 pandemic influenza A(H1N1) disease.
title_full_unstemmed Pre-admission statin use and in-hospital severity of 2009 pandemic influenza A(H1N1) disease.
title_sort pre-admission statin use and in-hospital severity of 2009 pandemic influenza a(h1n1) disease.
publisher Public Library of Science (PLoS)
publishDate 2011
url https://doaj.org/article/70aa68bd0cd54fcb96b882452023d6b9
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