Oxygen Delivery to Tissues
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Questions and Answers

What factors determine systemic oxygen delivery to the tissues?

  • Strength of the heart's contraction and rate of contraction
  • Heart rate and stroke volume
  • Venous return and arterial oxygen content
  • Perfusion and oxygen content of the blood (correct)

    • Which formula is used to determine cardiac output?

  • $CO = HR - SV$
  • $CO = HR \times SV$ (correct)
  • $CO = HR + SV$
  • $CO = \frac{HR}{SV}$

    • What is the product of systemic oxygen delivery to the tissues?

  • Cardiac output and arterial oxygen content (correct)
  • Stroke volume and venous return
  • Heart rate and perfusion
  • Inotropy and chronotropy

    • What is the first compensatory response when oxygen delivery is inadequate?

    <p>Increase cardiac output</p> Signup and view all the answers

    Which factors determine cardiac output?

    <p>Heart rate and stroke volume</p> Signup and view all the answers

    What is the main concern in the prehospital setting for a patient with hemorrhage?

    <p>Controlling bleeding</p> Signup and view all the answers

    How long does direct pressure take to control most types of hemorrhage?

    <p>4 to 6 minutes</p> Signup and view all the answers

    What is the characteristic of arterial bleeding?

    <p>Bright red and spurting</p> Signup and view all the answers

    How can external hemorrhage be controlled by a paramedic?

    <p>Applying direct pressure</p> Signup and view all the answers

    What method may reduce bleeding when there are fractures?

    <p>Immobilization by splinting</p> Signup and view all the answers

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