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Emergency Medicine Test Prep

Category - Bleeding

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During bleeding the pediatric patient's compensatory mechanism to maintain cardiac output is?

decrease heart rate
increased heart rate
low blood volume
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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