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Definitions of brain dead

  1. having irreversible loss of brain function as indicated by a persistent flat electroencephalogram; "was declared brain dead" Scrapingweb Dictionary DB
  2. A state of prolonged irreversible cessation of all brain activity, including lower brain stem function with the complete absence of voluntary movements, responses to stimuli, brain stem reflexes, and spontaneous respirations. Reversible conditions which mimic this clinical state (e.g., sedative overdose, hypothermia, etc.) are excluded prior to making the determination of brain death. (From Adams et al., Principles of Neurology, 6th ed, pp348-9) Medical Dictionary DB
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