A nurse caring for a patient who was in a motor vehicle accident that resulted in trauma to C4 would expect to find
a. Decreased tidal volumes.
b. Increased perfusion.
c. Increased use of accessory muscles.
d. Decreased hemoglobin.
ANS: A
A C4 injury would result in damage to the phrenic nerve and would cause a decrease in inspiratory lung expansion. Accessory muscles will also be damaged by a C4 injury. The patient may exhibit decreased perfusion and increased hemoglobin to compensate for hypoxemia.
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