A nurse is caring for a client who reports a decrease in central vision. The nurse should identify that this is a manifestation of which of the following visual impairments?
Macular degeneration
Glaucoma
Diabetic retinopathy
Cataract
The Correct Answer is A
Choice A Reason: This is correct because macular degeneration is a condition that affects the macula, which is the central part of the retina that is responsible for sharp and detailed vision. Macular degeneration can cause blurred or distorted central vision, difficulty reading or recognizing faces, or dark spots in the visual field.
Choice B Reason: This is incorrect because glaucoma is a condition that affects the optic nerve, which is the nerve that connects the eye to the brain and carries visual signals. Glaucoma can cause increased pressure inside the eye, damage to the optic nerve, and loss of peripheral vision.
Choice C Reason: This is incorrect because diabetic retinopathy is a condition that affects the blood vessels in the retina, which is the layer of tissue at the back of the eye that converts light into nerve impulses. Diabetic retinopathy can cause bleeding, swelling, or leakage of fluid in the retina, and loss of vision in any part of the visual field.
Choice D Reason: This is incorrect because cataract is a condition that affects the lens, which is the transparent structure behind the pupil that focuses light onto the retina. Cataract can cause clouding or opacity of the lens, and reduced vision in all parts of the visual field.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A Reason: Hemorrhage is not a complication of an acute spinal cord injury, but rather a possible cause of it. Hemorrhage can occur due to trauma or rupture of blood vessels in or around the spinal cord, leading to compression and damage of the nerve tissue.
Choice B Reason: This is the correct choice. Spinal shock is a complication of an acute spinal cord injury that occurs within minutes to hours after the injury. It is characterized by loss of sensation, motor function, reflexes, and autonomic function below the level of injury. It is caused by transient disruption of nerve conduction and synaptic transmission in the spinal cord.
Choice C Reason: Apoptosis is not a complication of an acute spinal cord injury, but rather a cellular process that occurs after it. Apoptosis is programmed cell death that occurs in response to injury or stress. It can lead to further loss of neurons and glial cells in the spinal cord over time.
Choice D Reason: Neurogenic shock is a complication of an acute spinal cord injury that occurs within hours to days after the injury. It is characterized by hypotension, bradycardia, and peripheral vasodilation due to loss of sympathetic tone and unopposed parasympathetic activity. It is caused by disruption of autonomic pathways in the spinal cord.

Correct Answer is D
Explanation
Choice A Reason: Colorectal cancer is not likely to cause nausea with projectile vomiting or high-pitched sounds in the left upper quadrant. Colorectal cancer may cause symptoms such as rectal bleeding, change in bowel habits, abdominal pain, or weight loss.
Choice B Reason: Paralytic ileus is a condition where the bowel stops working and does not contract or move food along. Paralytic ileus may cause symptoms such as abdominal distension, absence of bowel sounds, constipation, or vomiting.
Choice C Reason: Large bowel obstruction is a blockage of the colon or rectum that prevents the passage of stool. Large bowel obstruction may cause symptoms such as abdominal distension, low-pitched sounds in the right lower quadrant, constipation, or ribbon-like stools.
Choice D Reason: Small bowel obstruction is a blockage of the small intestine that prevents the passage of food and fluids. Small bowel obstruction may cause symptoms such as nausea with projectile vomiting, high-pitched sounds in the left upper quadrant, abdominal cramps, or dehydration.

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