A client's chart indicates that they are legally blind. Which of the following is the definition of legally blind?
Full vision loss in at least one eye
The best-corrected vision in the better eye of 20/200 or less
Inability to see clearly from 200 feet away without corrective lenses
Bilateral visual impairment of 20/60 or greater
The Correct Answer is B
Choice A Reason: This is incorrect because full vision loss in one eye does not necessarily mean that the person is legally blind. Legal blindness depends on the visual acuity and visual field of both eyes.
Choice B Reason: This is correct because legal blindness is defined by the World Health Organization (WHO) as having a visual acuity of 20/200 or worse in the better eye with the best possible correction, such as glasses or contact lenses. This means that the person can see at 20 feet what a normal person can see at 200 feet.
Choice C Reason: This is incorrect because inability to see clearly from 200 feet away without corrective lenses may indicate nearsightedness or myopia, but not legal blindness. Nearsightedness can be corrected with lenses or surgery.
Choice D Reason: This is incorrect because bilateral visual impairment of 20/60 or greater does not meet the criteria for legal blindness. Visual impairment is defined by WHO as having a visual acuity of less than 20/60 but better than 20/200 in the better eye with the best possible correction.
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 A
Explanation
Choice A Reason: This is the correct choice because a complete spinal cord injury is a condition where there is no motor or sensory function below the level of injury. The client will have paralysis of all four limbs (quadriplegia) and loss of bladder, bowel, and sexual function. The client will also have impaired thermoregulation, breathing, and blood pressure. The client will need 24-hour a day care to assist with mobility, hygiene, elimination, nutrition, and prevention of complications.
Choice B) Reason: This is incorrect because a client who is able to assist with transfer and perform self-care has a partial spinal cord injury, not a complete one. A partial spinal cord injury is a condition where there is some motor or sensory function below the level of injury. The degree of impairment depends on the extent and location of the damage.
Choice C Reason: This is incorrect because a client who is able to roll over independently has a lower spinal cord injury, not a complete one. A lower spinal cord injury is a condition where there is damage to the lumbar or sacral segments of the spinal cord. The client will have paralysis of the lower limbs (paraplegia) and some loss of bladder, bowel, and sexual function. The client will still have some control over the upper limbs and trunk.
Choice D Reason: This is incorrect because a client who is able to drive an electric wheelchair has an upper spinal cord injury, not a complete one. An upper spinal cord injury is a condition where there is damage to the cervical or thoracic segments of the spinal cord. The client will have paralysis of all four limbs (quadriplegia) and loss of bladder, bowel, and sexual function. However, the client may still have some movement or sensation in the shoulders, arms, or hands.
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