A nurse explains to a student that which of the following is the mechanism by which circulation of oxygen is increased to the organs of a newborn?
A.
Deeper respirations
B.
Increased stroke volume
C.
Increased tidal volume
D.
Tachycardia
ANS: D
In a newborn, ability to alter cardiac output is limited, and stroke volume cannot be improved. The physiological mechanism by which circulation of oxygenated blood to organs is improved in the newborn is tachycardia.
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