Nursing Elites

1. A nurse reviewing a client's record notes that the result of the client's latest Snellen chart vision test was 20/80. The nurse interprets the client's results in which way?

• A. The client is legally blind.
• B. The client has normal vision.
• C. The client can read at a distance of 20 feet what a client with normal vision can read at 80 feet.
• D. The client can read at a distance of 80 feet what a client with normal vision can read at 20 feet.

Correct answer: D

Rationale: When interpreting visual acuity testing results using the Snellen chart, the recorded numeric fraction represents the distance the client is standing from the chart and the distance a normal eye could read that particular line. A reading of 20/80 means that the client can read at 20 feet what a client with normal vision can read at 80 feet. This indicates visual impairment but does not meet the criteria for legal blindness, which is defined as best-corrected vision in the better eye of 20/200 or worse. Normal visual acuity is 20/20. Therefore, the correct interpretation is that the client can read at a distance of 80 feet what a client with normal vision can read at 20 feet. Choice A is incorrect because 20/80 does not meet the criteria for legal blindness. Choice B is incorrect as the client's vision is impaired. Choice C is incorrect because it reverses the interpretation of the fraction.

2. Which of the following vaccines contains a live virus?

• A. varicella
• B. IPV
• C. DTaP
• D. hepatitis B

Correct answer: A

Rationale: The correct answer is varicella. Varicella vaccine contains a live, weakened form of the varicella-zoster virus. Choice B, IPV (inactivated poliovirus vaccine), is an inactivated vaccine, not a live virus vaccine. Choices C and D, DTaP (diphtheria, tetanus, and acellular pertussis vaccine) and hepatitis B vaccine, respectively, do not contain live viruses. Varicella is the only live virus vaccine among the options.

3. The nurse is teaching parents of a newborn about feeding their infant. Which of the following instructions should the nurse include?

• A. Use the defrost setting on microwave ovens to warm bottles.
• B. When refrigerating formula, discard partially used bottles after 24 hours.
• C. When using formula concentrate, mix one part water and one part concentrate.
• D. When using powdered formula, mix two parts water and one part powder.

Correct answer: A

Rationale: The correct answer is to use the defrost setting on microwave ovens to warm bottles. It is essential for parents to be cautious when warming bottles in a microwave oven to prevent superheating of the milk. Choosing the defrost setting and checking the formula temperature before giving it to the baby helps avoid burns. Discarding partially used bottles after 24 hours when refrigerating formula is crucial as it reduces the risk of harmful bacterial growth. Mixing formula concentrate with water in a 1:1 ratio of one part concentrate to one part water ensures proper dilution of the formula. On the other hand, powdered formula should be mixed following the package instructions, typically using two parts water to one part powder. This accurate mixing ratio provides the necessary balance of nutrients for the baby. Adding fresh formula to partially used bottles can introduce pathogens that may harm the infant, underscoring the importance of discarding partially used bottles and preparing formula correctly. Therefore, options B, C, and D are incorrect as they do not address the safe and proper ways to feed a newborn effectively.

4. How should a client's neck be positioned for palpation of the thyroid?

• A. flexed toward the side being examined
• B. hyperextended directly backward
• C. flexed away from the side being examined
• D. flexed directly forward

Correct answer: A

Rationale: The correct way to position a client's neck for palpation of the thyroid is to have it flexed toward the side being examined. This positioning helps to better access and palpate the thyroid gland. Option B, hyperextending the neck directly backward, is incorrect as it can make palpation more difficult and uncomfortable for the client. Option C, flexing the neck away from the side being examined, is also incorrect as it may obscure the thyroid gland, making it harder to palpate. Option D, flexing the neck directly forward, is not ideal for thyroid palpation as it does not provide the best access to the gland.

5. A 2-year-old child diagnosed with HIV comes to a clinic for immunizations. Which of the following vaccines should the nurse expect to administer in addition to the scheduled vaccines?

• A. pneumococcal vaccine
• B. hepatitis A vaccine
• C. Lyme disease vaccine
• D. typhoid vaccine

Correct answer: A

Rationale: For a 2-year-old child diagnosed with HIV, in addition to the scheduled vaccines, the nurse should expect to administer the pneumococcal vaccine. Children with HIV are at an increased risk of infections, including pneumococcal disease. The pneumococcal vaccine helps protect against serious pneumococcal infections like pneumonia, meningitis, and bacteremia. The hepatitis A vaccine is not specifically recommended for all children with HIV unless there are specific risk factors. The Lyme disease vaccine is for individuals at risk for Lyme disease, typically between the ages of 15 and 70, transmitted by ticks. The typhoid vaccine is usually recommended for individuals traveling to endemic areas or working in specific high-risk occupations like microbiology laboratories dealing with Salmonella typhi.

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