National Physical Therapy Examination (NPTE) Practice Exam

What is a common effect of a cervical spinal cord injury?

1. Increased respiratory capacity

2. Decreased reflex actions

3. Decreased respiratory ability

4. Increased ability to mobilize

The correct answer is: Decreased respiratory ability

A cervical spinal cord injury commonly leads to decreased respiratory ability due to the disruption of neural pathways responsible for the control of breathing. The cervical spinal cord contains nerve fibers that innervate the diaphragm and accessory muscles involved in respiration. An injury at this level can impair the function of these muscles, significantly affecting the individual's ability to breathe effectively. Additionally, such injuries can lead to reduced inspiratory and expiratory tasks, especially if the injury occurs at higher cervical levels (C3-C5), where phrenic nerve function is affected. As a result, individuals may experience respiratory weakness or paralysis, necessitating respiratory support or adaptive strategies for breathing. This impairment can limit physical activity and overall quality of life. The other potential outcomes, such as increased respiratory capacity, decreased reflex actions, or increased ability to mobilize, are generally not associated with cervical spinal cord injuries and do not reflect the clinical realities faced by individuals with such injuries.