The nurse continues a neurologic assessment of the cranial nerve XI (Spinal accessory) for a client. Which instruction should the nurse give the client to complete this assessment?

Choice A Reason:
Hyperextension and palmar flexion are correct. Hyperextension involves moving the wrist joint backward, testing its ability to extend beyond its neutral position. Palmar flexion involves moving the wrist joint forward, testing its ability to flex toward the palm. These movements collectively assess the range of motion of the wrist joint in both directions, which is essential for identifying any limitations or pain associated with certain movements. Since the client presents with right wrist pain and ecchymosis, assessing both hyperextension and palmar flexion can help determine if there's any injury or impairment affecting the wrist's mobility.
Choice B Reason:
Plantar flexion is incorrect. Plantar flexion refers to a movement of the foot and ankle, not the wrist. Therefore, instructing the client to perform plantar flexion would not assess the wrist's mobility and is not relevant to the presented scenario of right wrist pain with ecchymosis.
Choice C Reason:
Forearm pronation is incorrect. Forearm pronation involves rotating the forearm so that the palm faces downward. This movement primarily assesses the pronation and supination of the forearm, not the wrist's mobility. Since the client's symptoms are specific to the wrist, assessing forearm pronation would not directly evaluate the wrist's range of motion.
Choice D Reason:
Forearm supination is incorrect. Forearm supination involves rotating the forearm so that the palm faces upward. Similar to forearm pronation, this movement primarily assesses the forearm's mobility, not the wrist's mobility. Therefore, instructing the client to perform forearm supination would not be an appropriate method for assessing the wrist's range of motion in the context of right wrist pain with ecchymosis.

Choice A Reason:
Shrug shoulders against resistance is correct because cranial nerve XI, also known as the spinal accessory nerve, innervates the trapezius and sternocleidomastoid muscles. Instructing the client to shrug their shoulders against resistance tests the strength and function of the trapezius muscle, which is primarily innervated by cranial nerve XI. Therefore, this instruction directly assesses the function of the cranial nerve XI.
Choice B Reason:
Stand up slowly with eyes closed is incorrect because standing up slowly with eyes closed primarily assesses proprioception and balance, which involve multiple cranial nerves and the vestibular system. While cranial nerve XI may play a role in maintaining posture and balance, it is not the primary nerve involved in this assessment.
Choice C Reason:
Turn head from side to side is incorrect because turning the head from side to side primarily assesses the function of the sternocleidomastoid muscle, which is also innervated by cranial nerve XI. However, this action alone does not provide resistance against which the muscle can contract, making it less specific for assessing cranial nerve XI compared to the instruction to shrug the shoulders against resistance.
Choice D Reason:
Raise both arms overhead incorrect because raising both arms overhead primarily assesses motor function and strength of the upper extremities, which do not directly involve the muscles innervated by cranial nerve XI. While the trapezius muscle may be indirectly involved in shoulder movement, this action does not specifically target the function of cranial nerve XI.