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Sedation in the intensive care setting

Authors Hughes CG, McGrane S, Pandharipande PP

Received 11 April 2012

Accepted for publication 31 May 2012

Published 25 October 2012 Volume 2012:4 Pages 53—63

DOI https://doi.org/10.2147/CPAA.S26582

Review by Single-blind

Peer reviewer comments 2

Christopher G Hughes, Stuart McGrane, Pratik P Pandharipande

Vanderbilt University School of Medicine, Nashville, TN, USA

Abstract: Critically ill patients are routinely provided analgesia and sedation to prevent pain and anxiety, permit invasive procedures, reduce stress and oxygen consumption, and improve synchrony with mechanical ventilation. Regional preferences, patient history, institutional bias, and individual patient and practitioner variability, however, create a wide discrepancy in the approach to sedation of critically ill patients. Untreated pain and agitation increase the sympathetic stress response, potentially leading to negative acute and long-term consequences. Oversedation, however, occurs commonly and is associated with worse clinical outcomes, including longer time on mechanical ventilation, prolonged stay in the intensive care unit, and increased brain dysfunction (delirium and coma). Modifying sedation delivery by incorporating analgesia and sedation protocols, targeted arousal goals, daily interruption of sedation, linked spontaneous awakening and breathing trials, and early mobilization of patients have all been associated with improvements in patient outcomes and should be incorporated into the clinical management of critically ill patients. To improve outcomes, including time on mechanical ventilation and development of acute brain dysfunction, conventional sedation paradigms should be altered by providing necessary analgesia, incorporating propofol or dexmedetomidine to reach arousal targets, and reducing benzodiazepine exposure.

Keywords: fentanyl, propofol, dexmedetomidine, Behavioral Pain Scale, Richmond Agitation-Sedation Scale, Sedation-Agitation Scale, Confusion Assessment Method for the ICU

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