Which of the following vaccines contains a live virus?

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.

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.

Correct Answer: C

Rationale: The correct answer is 'Decreased older client's ability to clear secretions.' Respiratory changes related to the normal aging process decrease an older adult's ability to clear secretions and protect the airway. In healthy older adults, the number of alveoli does not change significantly; their structure, however, is altered. Respiratory system compliance decreases with advancing age because of a progressive loss of elastic recoil of the lung parenchyma and conducting airways, and reduced elastic recoil of the lung and opposing forces of the chest wall. Production of surfactant in the lung does not usually decrease with aging, nor does it increase. However, the production of alveolar cells responsible for surfactant production is diminished. Choices A, B, and D are incorrect. Choice A is incorrect because respiratory system compliance decreases with aging. Choice B is incorrect as the number of alveoli does not significantly decrease in healthy older adults. Choice D is incorrect as the production of surfactant does not usually decrease with aging.

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.

Correct Answer: C

Rationale: As an individual ages, the number of sweat glands decreases, resulting in reduced body odor and decreased evaporative heat loss due to less sweating. The need for antiperspirants and deodorants is reduced in older adults. Therefore, the statement 'I need to wear additional antiperspirant and deodorant in warm weather' indicates a need for further instruction. Older adults should focus on wearing cool, light clothing in warm weather to prevent overheating, wearing a hat with a wide brim when outdoors to protect from the sun's rays, and staying hydrated by drinking extra fluids during the summer. These measures are more effective in preventing heatstroke in older adults compared to using additional antiperspirants and deodorants, which are not necessary.