A nurse is performing a focused assessment for vision on a client suspected of having vision loss. Which cranial nerve is the nurse assessing when determining if there are visual field or visual acuity deficits?

Choice A Reason: This choice is incorrect. Cranial Nerve VIII is the vestibulocochlear nerve, which is responsible for hearing and balance. It does not affect vision or eye movements.

Choice B Reason: This is the correct choice. Cranial Nerve II is the optic nerve, which is responsible for transmitting visual information from the retina to the brain. It affects visual field and visual acuity, which are measures of peripheral and central vision, respectively.

Choice C Reason: This choice is incorrect. Cranial Nerve I is the olfactory nerve, which is responsible for smell. It does not affect vision or eye movements.

Choice D Reason: This choice is incorrect. Cranial Nerve VII is the facial nerve, which is responsible for facial expressions and taste. It does not affect vision or eye movements.

Choice A Reason: This is incorrect because encouraging coughing and deep breathing can increase intracranial pressure (ICP), which is the pressure inside

the skull that can affect brain function. Coughing and deep breathing can increase blood flow and oxygen demand to the brain, which can worsen cerebral edema. The nurse should suction the patient as needed and maintain a patent airway.

Choice B Reason: This is incorrect because positioning the patient with knees and hips flexed can increase ICP by reducing venous drainage from the head. The nurse should position the patient with neck and body in alignment and avoid extreme flexion or extension of any joints.

Choice C Reason: This is incorrect because performing nursing interventions once an hour can disturb the patient's sleep and increase ICP by stimulating brain activity. The nurse should cluster nursing interventions and provide quiet and dark environment to promote rest and reduce stress.

Choice D Reason: This is correct because keeping the head of the bed elevated to 30 degrees can decrease ICP by facilitating venous drainage from the head and reducing cerebral blood volume. The nurse should monitor the patient's blood pressure and pulse to ensure adequate cerebral perfusion.