A nurse is assessing a client’s cranial nerves as part of a neurological examination. Which of the following actions should the nurse take to assess cranial nerve III?
Eliciting the gag reflex
Checking the pupillary response to light
Observing for facial symmetry
Testing visual acuity
The Correct Answer is B
Choice A reason: Eliciting the gag reflex is not a valid way to assess cranial nerve III. The gag reflex is a protective mechanism that prevents choking or aspiration by triggering a contraction of the pharyngeal muscles when the back of the throat is stimulated. The gag reflex is mediated by cranial nerves IX and X, not III.
Choice B reason: Checking the pupillary response to light is a reliable way to assess cranial nerve III. The pupillary response to light is a reflex that causes the pupil to constrict when exposed to bright light and dilate when exposed to dim light. This reflex helps to regulate the amount of light that enters the eye and protects the retina from damage. The pupillary response to light is controlled by cranial nerve III, which innervates the sphincter pupillae muscle that constricts the pupil.
Choice C reason: Observing for facial symmetry is not a relevant way to assess cranial nerve III. Facial symmetry is the degree of similarity between the two halves of the face. Facial symmetry can be affected by various factors, such as genetics, aging, or facial nerve palsy. Facial nerve palsy is a condition that causes weakness or paralysis of the muscles that control facial expression. Facial nerve palsy is caused by damage to cranial nerve VII, not III.
Choice D reason: Testing visual acuity is not a sufficient way to assess cranial nerve III. Visual acuity is the ability to see fine details and distinguish objects at a distance. Visual acuity depends on various factors, such as the clarity of the lens and cornea, the shape of the eyeball, and the function of the retina. Visual acuity is mainly affected by cranial nerve II, which carries visual information from the retina to the brain. Cranial nerve III does not directly influence visual acuity, but it does innervate some of the muscles that move the eye and enable binocular vision.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A reason: Encourage the use of wide grip utensils. This action is not related to homonymous hemianopsia, but to the motor weakness or paralysis that may occur on the opposite side of the body after a stroke. Wide grip utensils can help the client hold and use them more easily.
Choice B reason: Remind the client to look for food on the left side of the tray. This action is appropriate because homonymous hemianopsia is a visual field loss on the same side of both eyes. A client who had a right sided stroke will have difficulty seeing the left side of their visual field. Reminding the client to look for food on the left side of the tray will help them eat more completely and prevent malnutrition.
Choice C reason: Provide a nonskid mat to alleviate plate movement. This action is not related to homonymous hemianopsia, but to the safety and stability of the client's eating environment. A nonskid mat can prevent the plate from sliding or falling off the tray.
Choice D reason: Encourage the client to use his right hand when feeding himself. This action is not related to homonymous hemianopsia, but to the motor weakness or paralysis that may occur on the opposite side of the body after a stroke. Encouraging the client to use his right hand can help him maintain his independence and function.
Correct Answer is D
Explanation
Choice A reason: Narrowed pulse pressure is not a specific manifestation of pneumonia in the older adult client. Pulse pressure is the difference between the systolic and diastolic blood pressure readings. A normal pulse pressure is about 40 mm Hg, and a narrowed pulse pressure is less than 25 mm Hg. A narrowed pulse pressure can indicate various conditions, such as heart failure, shock, or aortic stenosis, but it is not a sign of pneumonia.
Choice B reason: Night sweats are not a common manifestation of pneumonia in the older adult client. Night sweats are episodes of excessive sweating during sleep that can soak the bedding or clothing. Night sweats can have many causes, such as menopause, infections, medications, or cancer, but they are not typically associated with pneumonia.
Choice C reason: Bradycardia is not a usual manifestation of pneumonia in the older adult client. Bradycardia is a slow heart rate, defined as less than 60 beats per minute. Bradycardia can be normal in some people, such as athletes or those who are very fit, or it can be a sign of a problem with the heart's electrical system. Pneumonia does not cause bradycardia, but it can cause tachycardia, which is a fast heart rate, due to the increased oxygen demand and inflammation.
Choice D reason: Confusion is a frequent manifestation of pneumonia in the older adult client. Confusion is a state of impaired awareness, orientation, memory, or judgment. Confusion can occur in older adults with pneumonia due to several factors, such as hypoxia, dehydration, electrolyte imbalance, fever, or infection. Confusion can also increase the risk of complications, such as aspiration, falls, or delirium. Therefore, the nurse should monitor the mental status of the older adult client with pneumonia and report any changes to the provider..
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