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Cerebral perfusion in sepsis-associated delirium

Pfister, D. and Siegemund, M. and Dell-Kuster, S. and Smielewski, P. and Rüegg, S. and Strebel, S. P. and Marsch, S. C. and Pargger, H. and Steiner, L. A.. (2008) Cerebral perfusion in sepsis-associated delirium. Critical care, Vol. 12 , R63.

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Official URL: http://edoc.unibas.ch/dok/A6004198

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Abstract

INTRODUCTION: The pathophysiology of sepsis-associated delirium is not completely understood and the data on cerebral perfusion in sepsis are conflicting. We tested the hypothesis that cerebral perfusion and selected serum markers of inflammation and delirium differ in septic patients with and without sepsis-associated delirium. METHODS: We investigated 23 adult patients with sepsis, severe sepsis, or septic shock with an extracranial focus of infection and no history of intracranial pathology. Patients were investigated after stabilisation within 48 hours after admission to the intensive care unit. Sepsis-associated delirium was diagnosed using the confusion assessment method for the intensive care unit. Mean arterial pressure (MAP), blood flow velocity (FV) in the middle cerebral artery using transcranial Doppler, and cerebral tissue oxygenation using near-infrared spectroscopy were monitored for 1 hour. An index of cerebrovascular autoregulation was calculated from MAP and FV data. C-reactive protein (CRP), interleukin-6 (IL-6), S-100beta, and cortisol were measured during each data acquisition. RESULTS: Data from 16 patients, of whom 12 had sepsis-associated delirium, were analysed. There were no significant correlations or associations between MAP, cerebral blood FV, or tissue oxygenation and sepsis-associated delirium. However, we found a significant association between sepsis-associated delirium and disturbed autoregulation (P = 0.015). IL-6 did not differ between patients with and without sepsis-associated delirium, but we found a significant association between elevated CRP (P = 0.008), S-100beta (P = 0.029), and cortisol (P = 0.011) and sepsis-associated delirium. Elevated CRP was significantly correlated with disturbed autoregulation (Spearman rho = 0.62, P = 0.010). CONCLUSION: In this small group of patients, cerebral perfusion assessed with transcranial Doppler and near-infrared spectroscopy did not differ between patients with and without sepsis-associated delirium. However, the state of autoregulation differed between the two groups. This may be due to inflammation impeding cerebrovascular endothelial function. Further investigations defining the role of S-100beta and cortisol in the diagnosis of sepsis-associated delirium are warranted. TRIAL REGISTRATION: ClinicalTrials.gov NCT00410111.
Faculties and Departments:03 Faculty of Medicine > Bereich Querschnittsfächer (Klinik) > Anästhesiologie
03 Faculty of Medicine > Departement Klinische Forschung > Bereich Querschnittsfächer (Klinik) > Anästhesiologie
03 Faculty of Medicine > Bereich Medizinische Fächer (Klinik) > Neurologie
03 Faculty of Medicine > Departement Klinische Forschung > Bereich Medizinische Fächer (Klinik) > Neurologie
03 Faculty of Medicine > Bereich Medizinische Fächer (Klinik) > Intensivmedizin > Intensivmedizin (Marsch)
03 Faculty of Medicine > Departement Klinische Forschung > Bereich Medizinische Fächer (Klinik) > Intensivmedizin > Intensivmedizin (Marsch)
UniBasel Contributors:Marsch, Stephan and Strebel, Stephan P. and Pargger, Hans and Steiner, Luzius A. and Rüegg, Stephan and Siegemund, Martin
Item Type:Article, refereed
Article Subtype:Research Article
Bibsysno:Link to catalogue
Publisher:Current Science
ISSN:1364-8535
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:25 Apr 2014 08:01
Deposited On:25 Apr 2014 08:01

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