How does dehydration impact older adults more than younger adults?

Correct Answer: B

Rationale: The correct answer is B because older adults have reduced kidney function, which impairs their ability to concentrate urine and retain water. Additionally, they may have a diminished thirst sensation, making them less likely to drink enough fluids. This combination of factors makes older adults more vulnerable to dehydration compared to younger adults. Choice A is incorrect because older adults actually have a lower percentage of body water due to age-related changes in body composition. Choice C is incorrect as dehydration can indeed have a more significant impact on older adults due to their physiological changes. Choice D is incorrect as older adults are actually more prone to dehydration due to various age-related factors.

Correct Answer: B

Rationale: The correct answer is B: Benzodiazepines. Benzodiazepines are central nervous system depressants that can cause drowsiness, dizziness, and confusion, increasing the risk of falls in older adults. They can also impair balance and coordination. Older adults are more sensitive to these effects due to age-related changes in metabolism and increased risk of cognitive impairment. Beta-blockers (A), statins (C), and antihypertensives (D) are generally safe in older adults and do not directly increase the risk of falls. Beta-blockers can sometimes cause dizziness but are more commonly associated with bradycardia. Statins are used to lower cholesterol levels and do not affect fall risk. Antihypertensives help lower blood pressure and can actually reduce the risk of falls by preventing conditions like orthostatic hypotension.

Correct Answer: C

Rationale: The correct answer is C: Social engagement and support. Social engagement has been identified as a crucial factor in successful aging, as it contributes to emotional well-being, cognitive function, and overall quality of life. Older adults with strong social networks tend to have better physical and mental health outcomes. Social support can help individuals cope with stress, reduce feelings of loneliness and isolation, and provide a sense of purpose and belonging. Financial security (A) is important but not the most significant predictor. Physical fitness and health (B) are essential but do not solely determine successful aging. Mental resilience (D) is valuable, but the social aspect plays a more significant role in aging successfully.

Correct Answer: D

Rationale: The correct answer is D: Confusion or cognitive decline. In older adults, dehydration can manifest differently than in younger populations. Cognitive decline is a key sign of dehydration in older adults due to the brain being more sensitive to fluid loss. Dehydration can lead to confusion, disorientation, and impaired cognitive function in older individuals. Dark-colored urine (A) is a common sign of dehydration in all age groups. Increased thirst (B) is a general sign of dehydration but may not be as prominent in older adults due to decreased thirst sensation. Dry mouth and skin (C) are also common signs of dehydration but may not be as reliable indicators in older adults compared to cognitive changes.

Correct Answer: C

Rationale: The correct answer is C because regular repositioning and the use of pressure-relieving devices are essential to prevent skin breakdown in immobile older adults. Repositioning helps redistribute pressure, maintaining blood flow to the skin and preventing tissue damage. Pressure-relieving devices such as cushions or special mattresses further reduce pressure on vulnerable areas. Choices A and B do not address the root cause of skin breakdown and may even exacerbate the issue. Choice D is incorrect as complete bed rest can lead to further complications like pressure ulcers. In summary, choice C is the most effective intervention as it directly targets the risk factors for skin breakdown in immobile older adults.