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Cognitive Motor Dissociation: Gap Analysis and Future Directions.

Jan Claassen1, Daniel Kondziella2,3, Ayham Alkhachroum4

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Neurocritical Care
|June 22, 2023
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Summary

Cognitive motor dissociation (CMD) in unresponsive patients shows volitional brain responses, offering prognostic insights. Further research is needed to address knowledge gaps for clinical application.

Keywords:
Acute brain injuryCognitive motor dissociationComaConsciousnessCovert consciousnessCuring Coma CampaignOutcomePrognosticationVegetative state

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Area of Science:

  • Neuroscience
  • Neurology
  • Critical Care Medicine

Background:

  • Patients with disorders of consciousness may exhibit volitional brain responses to commands, a state known as cognitive motor dissociation (CMD).
  • This cognitive motor dissociation has potential prognostic significance in assessing patient conditions.

Purpose of the Study:

  • To examine the science of cognitive motor dissociation (CMD).
  • To identify key knowledge gaps and unmet needs in CMD research.

Main Methods:

  • Convened an international expert group under the Neurocritical Care Society's Curing Coma Campaign.
  • Conducted monthly online meetings from September 2021 to April 2023.

Main Results:

  • Identified major knowledge gaps including patient/caregiver experiences, epidemiology, and CMD mechanisms.
  • Highlighted methodological variability for prognostication and the need for better patient identification for brain-computer interfaces.
  • Noted educational gaps for healthcare personnel regarding CMD incidence and prognostic relevance.

Conclusions:

  • Research must address mechanistic, epidemiological, bioengineering, and educational gaps in CMD.
  • Large-scale implementation of CMD assessment in clinical practice is needed to improve patient management.
  • Further investigation into CMD can enhance prognostication and treatment strategies for disorders of consciousness.