A nurse is preparing to assess a client. Which action should the nurse take to check cranial nerve VI?
Open the client’s visual acuity using a Snellen chart.
Whisper none of the client’s ears while blocking the other.
Ask the client to inspect up.
Ask the client to smile.
The Correct Answer is C
Choice A Reason:
Open the client’s visual acuity using a Snellen chart is incorrect. This action assesses cranial nerve II (optic nerve), which is responsible for vision. The Snellen chart is used to measure visual acuity, not the function of cranial nerve VI
Choice B Reason:
Whisper none of the client’s ears while blocking the other is incorrect. This action assesses cranial nerve VIII (vestibulocochlear nerve), which is responsible for hearing and balance. Whispering tests the auditory function of this nerve.
Choice C Reason:
Ask the client to inspect up is correct. Cranial nerve VI (abducens nerve) controls the lateral rectus muscle, which is responsible for moving the eye outward. Asking the client to look up and outward helps assess the function of this nerve.
Choice D Reason:
Ask the client to smile is incorrect. This action assesses cranial nerve VII (facial nerve), which controls the muscles of facial expression. Smiling tests the motor function of this nerve.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A Reason:
Restlessness is often one of the earliest signs of hypoxia. When the body experiences low oxygen levels, the brain is one of the first organs to be affected. This can lead to symptoms such as anxiety, agitation, and restlessness as the brain struggles to function properly without adequate oxygen. These symptoms occur because the body is trying to compensate for the lack of oxygen by increasing respiratory and heart rates, which can make a person feel uneasy or restless.

Choice B Reason:
Cyanosis refers to a bluish discoloration of the skin and mucous membranes due to low oxygen levels in the blood. While cyanosis is a significant indicator of hypoxia, it is typically a later sign. By the time cyanosis is visible, hypoxia has usually been present for some time, and oxygen levels have been critically low. Therefore, it is not the earliest clinical manifestation of hypoxia.
Choice C Reason:
Apnea is the absence of breathing. This is a severe and late sign of hypoxia. When a person stops breathing, it indicates that the body has been deprived of oxygen for an extended period, leading to critical conditions. Apnea is a medical emergency and requires immediate intervention, but it is not an early sign of hypoxia.
Choice D Reason:
Bradycardia is a slower than normal heart rate. Like apnea, bradycardia is a late sign of hypoxia. Initially, the body responds to low oxygen levels by increasing the heart rate (tachycardia) to pump more oxygenated blood to tissues. Bradycardia occurs when the body can no longer compensate, and the heart rate slows down, indicating severe hypoxia and impending failure of the cardiovascular system.
Correct Answer is B
Explanation
Choice A Reason:
Ask close-ended questions is incorrect. Close-ended questions typically elicit short, specific responses such as “yes” or “no.” While they can be useful in certain situations, they do not provide enough information to thoroughly assess a client’s mental status. Open-ended questions allow the client to express themselves more fully, providing the nurse with better insight into their cognitive function.
Choice B Reason:
Ask open-ended questions is correct. Open-ended questions encourage the client to elaborate on their thoughts and feelings, which can reveal more about their mental status. This type of questioning helps the nurse assess the client’s orientation, memory, and thought processes more effectively.
Choice C Reason:
Use directive questions is incorrect. Directive questions are more structured and guide the client towards specific answers. While they can be useful for obtaining specific information, they do not allow for a comprehensive assessment of the client’s mental status.
Choice D Reason:
Use reflective questions is incorrect. Reflective questions are used to encourage the client to think more deeply about their responses and feelings. While they can be helpful in therapeutic settings, they are not the most effective for an initial assessment of mental status.
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