Comprehensive Systematic Review Update Summary: Disorders of Consciousness: Report of the Guideline Development,Dissemination, and Implementation Subcommittee of the American Academy of Neurology; the American Congress of Rehabilitation Medicine; and the National Institute on Disability,Independent Living,and Rehabilitation Research |
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| Authors: | Joseph T Giacino Douglas I Katz Nicholas D Schiff John Whyte Eric J Ashman Stephen Ashwal Richard Barbano Flora M Hammond Steven Laureys Geoffrey SF Ling Risa Nakase-Richardson Ronald T Seel Stuart Yablon Thomas SD Getchius Gary S Gronseth Melissa J Armstrong |
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| Institution: | 1. Department of Physical Medicine and Rehabilitation, Spaulding Rehabilitation Hospital and Harvard Medical School, Boston, MA;2. Department of Psychiatry, Massachusetts General Hospital, Boston, MA;3. Department of Neurology, Boston University School of Medicine, Boston, MA;4. Braintree Rehabilitation Hospital, MA;5. Department of Neurology and Neuroscience, Weill Cornell Medical College, New York, NY;6. Moss Rehabilitation Research Institute, Elkins Park, PA;g. Bronson Neuroscience Center, Bronson Methodist Hospital, Kalamazoo, MI;h. Department of Pediatrics, Division of Child Neurology, Loma Linda University School of Medicine, CA;i. Department of Neurology, University of Rochester Medical Center, NY;j. Indiana University Department of Physical Medicine & Rehabilitation, University of Indiana School of Medicine, Indianapolis;k. Coma Science Group–GIGA Research and Department of Neurology, Sart Tillman Liège University & University Hospital, Liège, Belgium;l. Department of Neurology, Uniformed Services University of Health Sciences, Bethesda;m. Department of Neurology, Johns Hopkins University, Baltimore, MD;n. James A. Haley Veterans’ Hospital, US Department of Veterans Affairs, Tampa, FL;o. Crawford Research Institute, Shepherd Center, Atlanta, GA;p. Center for Rehabilitation Science and Engineering, Department of Physical Medicine & Rehabilitation, Virginia Commonwealth University School of Medicine, Richmond;q. Division of Physical Medicine & Rehabilitation, University of Mississippi School of Medicine, Jackson, MS;r. Brain Injury Program, Methodist Rehabilitation Center, Jackson, MS;s. Heart Rhythm Society, Washington, DC;t. Department of Neurology, University of Kansas Medical Center, Kansas City;u. Department of Neurology, University of Florida College of Medicine, Gainesville |
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| Abstract: | ObjectiveTo update the 1995 American Academy of Neurology (AAN) practice parameter on persistent vegetative state and the 2002 case definition for the minimally conscious state (MCS) by reviewing the literature on the diagnosis, natural history, prognosis, and treatment of disorders of consciousness lasting at least 28 days.MethodsArticles were classified per the AAN evidence-based classification system. Evidence synthesis occurred through a modified Grading of Recommendations Assessment, Development and Evaluation process. Recommendations were based on evidence, related evidence, care principles, and inferences according to the AAN 2011 process manual, as amended.ResultsNo diagnostic assessment procedure had moderate or strong evidence for use. It is possible that a positive EMG response to command, EEG reactivity to sensory stimuli, laser-evoked potentials, and the Perturbational Complexity Index can distinguish MCS from vegetative state/unresponsive wakefulness syndrome (VS/UWS). The natural history of recovery from prolonged VS/UWS is better in traumatic than nontraumatic cases. MCS is generally associated with a better prognosis than VS (conclusions of low to moderate confidence in adult populations), and traumatic injury is generally associated with a better prognosis than nontraumatic injury (conclusions of low to moderate confidence in adult and pediatric populations). Findings concerning other prognostic features are stratified by etiology of injury (traumatic vs nontraumatic) and diagnosis (VS/UWS vs MCS) with low to moderate degrees of confidence. Therapeutic evidence is sparse. Amantadine probably hastens functional recovery in patients with MCS or VS/UWS secondary to severe traumatic brain injury over 4 weeks of treatment. Recommendations are presented separately. |
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| Keywords: | AAN American Academy of Neurology CI confidence interval DoC disorders of consciousness eMCS emergence from minimally conscious state LEP laser-evoked potential LR likelihood ratio MCS minimally conscious state MSTF Multi-Society Task Force OR odds ratio PVS persistent vegetative state UWS unresponsive wakefulness syndrome VS vegetative state |
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