Practice Quiz

Emergency Medicine Test Prep

Category - Bleeding

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During bleeding the pediatric patient's compensatory mechanism to maintain cardiac output is?
  1. decrease heart rate
  2. increased heart rate
  3. low blood volume
  4. high blood volume
Explanation
Answer: B - Cardiac output is influenced by stroke volume and heart rate. Because stroke volume has been shown to be relatively fixed in children, the pediatric patient's compensatory mechanism to maintain cardiac output is increased heart rate. This is the first defense against blood loss.
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