Nursing Elites

1. A nurse is preparing to listen to the apical heart rate in the area of the mitral valve in an adult client. The nurse should place the stethoscope on which part of the client's chest?

• A. Second left interspace
• B. Second right interspace
• C. Left lower sternal border
• D. Fifth left interspace at the midclavicular line

Correct answer: D

Rationale: The correct placement for auscultating the apical heart rate in the area of the mitral valve is the fifth left interspace at the midclavicular line. Placing the stethoscope in the second left interspace would be to listen to the pulmonic valve, the second right interspace is for the aortic valve, and the left lower sternal border is for the tricuspid valve.

2. A community health nurse is providing information to a group of older clients about measures to decrease the risk of contracting influenza during peak flu season. The nurse should provide which information?

• A. Clients must stay at home and ask a neighbor or family member to run their errands.
• B. It is best to do grocery shopping and other errands early in the morning when crowds are smaller.
• C. Clients should wash their hands frequently and keep hands away from the face, especially during peak flu season.
• D. Drinking eight 8-oz glasses of fluid each day will reduce the risk of contracting influenza.

Correct answer: C

Rationale: During peak influenza season, older clients should take measures to reduce the risk of contracting the flu. The most effective preventive measure is frequent hand hygiene and refraining from touching the face, as this reduces the transmission of the flu virus. While it is advisable to avoid crowds, the direct action of hand hygiene is more impactful. Doing errands early in the morning when crowds are smaller is a good suggestion to reduce exposure but does not address the direct transmission through hands. Drinking enough fluid daily is important for overall health but does not directly reduce the risk of contracting influenza.

3. What causes an older female client's hair to turn gray?

• A. ''A loss of melanin occurs in the normal aging process.''
• B. ''The number of sweat glands and blood vessels decreases in the normal aging process.''
• C. ''The skin on the scalp becomes thin, causing moisture to escape.''
• D. ''It is caused by hereditary factors.''

Correct answer: A

Rationale: The correct answer is 'A loss of melanin occurs in the normal aging process.' Graying hair in older adults is primarily due to a decrease in the number of melanocytes responsible for providing pigment and hair color. This reduction in melanin production leads to gray hair. The other choices are incorrect. While it is true that the skin becomes thinner with aging and the number of sweat glands and blood vessels decreases, these changes are not directly related to graying hair. Additionally, hereditary factors can influence when graying starts, but they do not cause the graying of hair itself.

4. Which of the following solutions is routinely used to flush an IV device before and after the administration of blood to a client?

• A. 0.9% sodium chloride
• B. 5% dextrose in water solution
• C. Sterile water
• D. Heparin sodium

Correct answer: A

Rationale: The correct answer is 0.9% sodium chloride. Normal saline is 0.9% sodium chloride, which has the same osmolarity as blood and does not cause cell lysis. Choices 2 and 3, 5% dextrose in water solution and sterile water, are hypotonic solutions that can lead to cell lysis. Choice 4, heparin sodium, is an anticoagulant and is not used for flushing IV devices before and after blood administration.

5. 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 concentrate and two parts water.
• D. If a portion of one bottle is left for the next feeding, discard it.

Correct answer: B

Rationale: The correct answer is to use the defrost setting on microwave ovens to warm bottles. It is crucial to be cautious when heating bottles in a microwave to prevent milk from becoming superheated. The defrost setting is recommended, and the formula's temperature should always be checked before feeding the baby. Choice B, which advises to discard partially used bottles of refrigerated formula after 24 hours, is also correct. This is important to prevent the introduction of pathogens by the baby into the formula. Choice C, recommending mixing one part formula concentrate with two parts water, is essential for ensuring the correct dilution. Choice D, suggesting to discard any remaining portion of a bottle for the next feeding, is incorrect. It is not necessary to discard the remaining portion if it has been refrigerated promptly and used within a safe time frame. Adding fresh formula to a partially used bottle is not recommended, as it can lead to the growth of pathogens that may be transferred to the new formula.

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