An older adult patient asks the nurse what caused his cataract. The nurse's response is based on which information?
The usual cause of cataracts in older people is congenital
Cataracts commonly develop when a patient has asthma.
The most common cause of a cataract is an injury to the eye.
The most common cause of a cataract is aging.
The Correct Answer is D
A. Congenital cataracts are present at birth and are relatively rare. In older adults, cataracts are primarily associated with age-related changes rather than congenital factors.
B. While certain medications used to treat asthma, like corticosteroids, can contribute to the development of cataracts, asthma itself is not a direct cause of cataracts. This connection is not strong enough to be considered a common cause.
C. While eye injuries can lead to cataract formation, they are not the most common cause, especially in the older adult population. Most cataracts develop due to age-related changes rather than trauma.
D. The most prevalent cause of cataracts, especially in older adults, is aging. As people get older, changes in the lens of the eye can lead to clouding, resulting in cataracts. Factors like UV exposure, smoking, and certain medical conditions may also contribute, but aging is the primary and most common factor.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Edema (swelling due to fluid accumulation) is not a primary manifestation of scabies. While secondary infections can lead to localized swelling, edema is not characteristic of scabies itself.
B. Maceration refers to the softening and breaking down of skin resulting from prolonged exposure to moisture. While it can occur if the skin is scratched and becomes wet, it is not a primary clinical manifestation of scabies.
C. Redness (erythema) can occur due to scratching and irritation, but it is not the defining feature of scabies. While some redness may be present, it is not the primary symptom that indicates scabies infestation.
D. The primary clinical manifestation of scabies is intense pruritus (itching), which is often worse at night. The itching is a result of an allergic reaction to the mites and their waste products, leading to discomfort and a strong urge to scratch.
Correct Answer is ["5.3"]
Explanation
1 kilogram equals 2.2 pounds.
The preschooler weighs 29 pounds, which is approximately 13.18 kilograms (29/2.2). The order is for 40 mg/kg/day
13.18 kg * 40 mg/kg = 527.2 mg/day.
Since the medication is to be administered every 12 hours, divide this daily dosage by 2 to get the per dose amount: 527.2 mg/day / 2 = 263.6 mg/dose.
Now, using the concentration of the elixir, which is 250 mg/5 mL, set up a proportion to find out how many milliliters are needed for the prescribed dose: 250 mg : 5 mL = 263.6 mg : X mL.
Solving for X gives us (263.6 mg * 5 mL) / 250 mg = 5.272 mL per dose.
Rounding to the nearest tenth, the nurse should administer 5.3 mL per dose.
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