Effects of Loss of Consciousness on Airway Obstruction
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Questions and Answers

What percentage of the total body mass does the human brain account for?

  • 65%
  • 14%
  • 20%
  • 2% (correct)
  • How long can the 7 mL of O2 circulating through the brain last to supply its metabolic requirements?

  • 30 seconds
  • Less than 10 seconds (correct)
  • 10 minutes
  • 1 minute
  • In Rossen et al.'s experiment, how quickly did individuals lose consciousness when deprived of O2?

  • 10 minutes
  • 6 seconds (correct)
  • 5 minutes
  • 1 minute
  • What is the term used to describe adequate ventilation as the key aspect of resuscitation?

    <p>Sine qua non</p> Signup and view all the answers

    What can periods of anoxia as brief as 3 minutes lead to?

    <p>Permanent brain damage</p> Signup and view all the answers

    What is the most common cause of transient loss of consciousness in the dental field according to the text?

    <p>Emotional disturbances</p> Signup and view all the answers

    Why does the tongue fall into the hypopharynx in unconscious patients?

    <p>Due to a decrease in muscle tone caused by loss of consciousness</p> Signup and view all the answers

    What is the primary focus of resuscitation in an unconscious patient?

    <p>Relief of airway obstruction</p> Signup and view all the answers

    Why is airway management crucial in maintaining consciousness?

    <p>To ensure a continuous supply of oxygen and glucose to the brain</p> Signup and view all the answers

    What happens if an unconscious patient experiences total airway obstruction?

    <p>They become anoxic and unlikely to be successfully resuscitated</p> Signup and view all the answers

    How does the brain derive most of its energy under normal conditions?

    <p>From the oxidation of glucose</p> Signup and view all the answers

    What happens if the brain does not receive a continuous supply of oxygen?

    <p>Limited energy from lactic acid metabolism</p> Signup and view all the answers

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