The nurse is caring for a spinal cord injury client. Assessment reveals shallow breath sounds with a very weak cough effort. The nurse correlates this with which level of injury on the spinal column?
A) C2
B) C5
C) T1
D) T10
Ans: B
Feedback:
Although a C3-to-C5 injury allows partial or full diaphragmatic function, ventilation is diminished because of the loss of intercostal muscle function, resulting in shallow breaths and a weak cough. Cord injuries involving C1 to C3 result in a lack of respiratory effort, and affected clients require assisted ventilation. The intercostal muscles, which function in elevating the rib cage and are needed for coughing and deep breathing, are innervated by spinal segments T1 through T7. The major muscles of expiration are the abdominal muscles, which receive their innervation from levels T6 to T12.
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