Early discrimination of cognitive motor dissociation from disorders of consciousness: pitfalls and clues.
Brain injury
Cognitive motor dissociation
Coma Recovery Scale
Disorders of consciousness
Motor behavior tool
Journal
Journal of neurology
ISSN: 1432-1459
Titre abrégé: J Neurol
Pays: Germany
ID NLM: 0423161
Informations de publication
Date de publication:
Jan 2021
Jan 2021
Historique:
received:
10
02
2020
accepted:
27
07
2020
revised:
22
07
2020
pubmed:
6
8
2020
medline:
22
6
2021
entrez:
6
8
2020
Statut:
ppublish
Résumé
Bedside assessment of consciousness and awareness after a severe brain injury might be hampered by confounding clinical factors (i.e., pitfalls) interfering with the production of behavioral or motor responses to external stimuli. Despite the use of validated clinical scales, a high misdiagnosis rate is indeed observed. We retrospectively analyzed a cohort of 49 patients with severe brain injury admitted to an acute neuro-rehabilitation program. Patients' behavior was assessed using the Motor Behavior Tool and Coma Recovery Scale Revised. All patients underwent systematic assessment for pitfalls including polyneuropathy and/or myopathy and/or myelopathy, major cranial nerve palsies, non-convulsive status epilepticus, aphasia (expressive or comprehensive), cortical blindness, thalamic involvement and frontal akinetic syndrome. A high prevalence (75%) of pitfalls potentially interfering with sensory afference (polyneuropathy, myopathy, myelopathy, and sensory aphasia), motor efference (polyneuropathy, myopathy, motor aphasia, and frontal akinetic syndrome), and intrinsic brain activity (thalamic involvement and epilepsy) was found. Nonetheless, the motor behavior tool identified residual cognition (i.e. a cognitive motor dissociation condition) regardless of the presence of these pitfalls in 70% of the patients diagnosed as unresponsive using the Coma Recovery Scale Revised. On one hand, pitfalls might contribute to misdiagnosis. On the other, it could be argued that they are clues for diagnosing cognitive motor dissociation rather than true disorders of consciousness given their prominent effect on the sensory-motor input-output balance.
Identifiants
pubmed: 32754829
doi: 10.1007/s00415-020-10125-w
pii: 10.1007/s00415-020-10125-w
pmc: PMC7815538
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
178-188Références
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