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 A
Explanation
Choice A reason: This is the correct answer because portal hypertension means that there is high blood pressure in the portal vein, which carries blood from the digestive organs to the liver. When the liver is damaged by hepatitis, it becomes scarred and obstructs the blood flow, causing increased pressure in the portal vein. This leads to fluid accumulation in the abdomen, called ascites, which causes abdominal swelling.
Choice B reason: This is incorrect because portal hypertension is not caused by the heart overworking but by liver damage. The heart does not pump blood into the portal vein, but into the hepatic artery, which supplies oxygenated blood to the liver.
Choice C reason: This is incorrect because portal hypertension does not develop when cirrhosis begins to resolve, but when it progresses. Cirrhosis is a chronic condition that causes irreversible scarring of the liver tissue, which worsens over time and increases portal hypertension.
Choice D reason: This is incorrect because eating high-sodium foods and a stressful lifestyle do not cause portal hypertension, but they can aggravate it. High-sodium foods can increase fluid retention and worsen ascites, while stress can increase blood pressure and worsen bleeding complications. The nurse should advise the client to limit sodium intake and manage stress levels.
Correct Answer is A
Explanation
Choice A Reason: This is the correct choice because driving a motorcycle is a high-risk activity that can expose the client to head trauma, especially if they do not wear a helmet. Traumatic brain injury (TBI) is a condition where the brain is damaged by an external force, such as a collision, fall, or assault.
Choice B Reason: This is incorrect because having high blood pressure is not a direct risk factor for traumatic brain injury. High blood pressure can increase the risk of stroke, which is a condition where the brain is damaged by an internal cause, such as a blood clot or hemorrhage.
Choice C Reason: This is incorrect because smoking and having a family history of brain cancer are not risk factors for traumatic brain injury. Smoking and genetic factors can increase the risk of developing brain tumors, which are abnormal growths of cells in the brain.
Choice D Reason: This is incorrect because golfing and driving a golf cart are low-risk activities that do not pose a significant threat to the client's head. Golfing and driving a golf cart may cause minor injuries, such as sprains, strains, or bruises, but not traumatic brain injury.
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