The emergency department is awaiting the arrival of a spinal cord-injured patient. Knowing the innervation of the diaphragm, a patient with which type of injury may be in need of immediate mechanical ventilation? Injury to the
A)
C4 area.
B)
C7 area.
C)
T1 area.
D)
T4 area.
Ans:
A
Feedback:
The diaphragm is the principal muscle of inspiration. It is innervated by the phrenic nerve roots, which arise from the cervical level of the spinal cord, mainly from C4 but also C3 and C5.
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