Hypoxia and Oxygen Therapy Introduction
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Questions and Answers

What term refers to a severe condition characterized by the complete absence of oxygen supply to body tissues and cells?

  • Hypoxemia
  • Anoxia (correct)
  • Hypoxia
  • Oxygen toxicity
  • Which condition specifically refers to the presence of low oxygen levels in the bloodstream?

  • Oxygen toxicity
  • Hypoxia
  • Hypoxemia (correct)
  • Anoxia
  • What can lead to apoptosis or necrosis due to increased concentrations of oxygen free radicals causing cellular damage?

  • Anemia
  • Infection
  • Hypoxemia
  • Oxygen toxicity (correct)
  • Which factor can cause hypoxia by decreasing the oxygen-carrying capacity of the blood?

    <p>Anemia</p> Signup and view all the answers

    What term describes a vicious cycle initiated by cell death triggers and oxygen free radicals causing further cell damage?

    <p>Oxygen toxicity</p> Signup and view all the answers

    Which condition can be chronic or acute, ranging from mild to severe depending on the extent of oxygen deprivation?

    <p>Hypoxia</p> Signup and view all the answers

    What is the primary rationale for administering supplemental oxygen in the ICU?

    <p>To avoid hypoxemia in patients</p> Signup and view all the answers

    Why is the administration of supplemental oxygen considered risky?

    <p>It increases morbidity and mortality</p> Signup and view all the answers

    What can an elevated level of PaO2 lead to?

    <p>Increased toxic reactive oxygen species production</p> Signup and view all the answers

    Why is there an emphasis on a conservative, normoxic oxygenation strategy?

    <p>To reduce the risk of harm associated with excessive oxygen use</p> Signup and view all the answers

    What is one risk associated with high FiO2 values in poorly ventilated patients?

    <p>Increased risk of lung injury</p> Signup and view all the answers

    Why is the liberal administration of supplemental oxygen discouraged?

    <p>To increase the production of toxic reactive oxygen species</p> Signup and view all the answers

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