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3D-Neuronavigation In Vivo Through a Patient's Brain During a Spontaneous Migraine Headache
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Coma.

G Bryan Young1

  • 1Department of Neurology and Critical Care Medicine, The University of Western Ontario, London, Ontario, Canada. bryan.young@lhsc.on.ca

Annals of the New York Academy of Sciences
|April 9, 2009
PubMed
Summary
This summary is machine-generated.

Coma, a state of unarousable unconsciousness, results from brain dysfunction affecting arousal. Understanding its causes, transient nature, and varied outcomes is key for patient assessment and management.

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Area of Science:

  • Neurology
  • Neuroscience

Background:

  • Coma is characterized by unarousable unconsciousness resulting from dysfunction of the ascending reticular activating system (ARAS).
  • The ARAS, crucial for arousal and wakefulness, possesses redundant pathways and neurotransmitters, contributing to coma's typically transient nature (rarely exceeding 3 weeks).

Purpose of the Study:

  • To review clinical and laboratory assessments for comatose patients.
  • To analyze the diverse conditions that precipitate coma.
  • To discuss management strategies, including prognosis and ethical considerations.

Main Methods:

  • Review of clinical and laboratory assessments in comatose patients.
  • Analysis of etiological factors contributing to coma.
  • Examination of management principles for comatose individuals.

Main Results:

  • Coma outcomes vary widely, from vegetative state to full recovery, contingent on the extent of damage to the cerebral cortex, thalamus, and their functional integration.
  • Numerous conditions can induce coma, including structural brain lesions, metabolic/toxic disorders, trauma, infections, seizures, and temperature dysregulation.
  • Effective management necessitates determining the cause and reversibility of neurological impairment, providing supportive care, and addressing ethical dilemmas.

Conclusions:

  • Coma is a complex neurological state with diverse causes and outcomes.
  • Comprehensive assessment and management are vital for optimizing patient care and prognosis.
  • Ethical considerations are paramount, especially in cases of predicted severe disability.