What is the most common type of dementia in older adults?

Correct Answer: A

Rationale: The correct answer is A: Alzheimer's disease. It is the most common type of dementia in older adults, accounting for around 60-80% of cases. Alzheimer's is characterized by the presence of beta-amyloid plaques and tau protein tangles in the brain, leading to memory loss and cognitive decline. Vascular dementia (B) is caused by impaired blood flow to the brain, Lewy body dementia (C) is characterized by abnormal protein deposits in the brain, and Frontotemporal dementia (D) affects the frontal and temporal lobes of the brain, leading to changes in behavior and personality. However, in older adults, Alzheimer's disease is the most prevalent form of dementia due to its widespread impact on memory and cognition.

Correct Answer: B

Rationale: The correct answer is B because decreasing fiber in the diet can actually worsen constipation. Fiber helps promote regular bowel movements by adding bulk to the stool. Walking and staying hydrated (choices A and D) are effective strategies to prevent constipation. Having a daily bowel movement (choice C) is a positive sign of bowel health. By choosing to decrease fiber intake, the client may inadvertently reduce the effectiveness of their bowel movements, leading to constipation.

Correct Answer: A

Rationale: The correct answer is A, the Gerontological Society of America, because it includes members from various disciplines such as sociology, psychology, biology, and medicine. This interdisciplinary approach allows for a holistic understanding of aging. The other choices focus specifically on nursing (B), aging (C), or higher education (D), and do not encompass a wide range of disciplines like choice A. This makes them more specialized and less likely to have a diverse membership across different fields.

Correct Answer: A

Rationale: The correct answer is A: Crusting. In older adults, crusting on the skin can indicate a potential complication such as infection, dermatitis, or impaired wound healing. Crusting may result from dryness, scratching, or poor circulation. It is essential for the nurse to assess and address the underlying cause promptly to prevent further complications. B: Wrinkling is a normal part of aging and not necessarily indicative of a complication unless it is severe and associated with other symptoms. C: Thinning/loss of elasticity of skin is a common age-related change and may not always indicate a complication unless it is excessive. D: Crusting is a duplicate answer.

Correct Answer: B

Rationale: The correct answer is B: Smoking. Centenarians are individuals who live to be 100 years old or older and smoking is a known risk factor for various diseases and premature death. Exercise, weight control, and delayed onset of disease are commonly associated characteristics of centenarians as they promote overall health and longevity. Smoking, on the other hand, has been proven to have detrimental effects on health and is not typically seen in individuals who live to be 100 or older. Therefore, the absence of smoking is a more accurate characteristic associated with centenarians.

Correct Answer: B

Rationale: The correct answer is B: Cognitive decline affecting memory and decision-making. Older adults with cognitive impairments, such as dementia, may struggle with remembering to take their medications as prescribed and making sound decisions regarding their medication regimen due to cognitive decline. Memory deficits can lead to missed doses, while impaired decision-making can result in improper adherence. Choices A, C, and D are incorrect as the primary reason for medication non-adherence in this population is the cognitive decline impacting memory and decision-making, rather than lack of understanding, physical inability, or fear of side effects.

Correct Answer: C

Rationale: The correct answer is C: To offer holistic care that allows older adults to live in the community. PACE aims to provide comprehensive and coordinated care to help seniors remain independent in their homes and communities. This includes medical, social, and behavioral services. Choice A is incorrect as PACE focuses on holistic care rather than just intensive medical treatment. Choice B is incorrect as PACE aims to prevent nursing home placement by supporting older adults to live at home. Choice D is incorrect as while PACE may help reduce healthcare costs through preventive and coordinated care, the primary goal is to support seniors in living in the community.

Correct Answer: D

Rationale: The correct answer is D because pursed lip breathing helps prevent airway collapse by maintaining positive pressure in the airways, reduces anxiety by promoting relaxation, and enhances effective breathing by improving oxygen exchange. Choice A is incorrect as pursed lip breathing does not directly prevent the build-up of secretions. Choice B is incorrect as comfort is not the primary purpose of pursed lip breathing. Choice C is incorrect as while pursed lip breathing can improve respiratory muscle function, its primary benefit lies in preventing airway collapse, reducing anxiety, and promoting effective breathing.

Correct Answer: A

Rationale: The correct answer is A: Genetic research. Telomere shortening is primarily based on the theory of cellular senescence, which is related to genetic research. Telomeres are protective caps at the end of chromosomes that shorten with each cell division. Genetic research has shown that telomere shortening is associated with aging and age-related diseases. Caloric restriction, oxidative stress, and cross-link theories of aging are not directly linked to telomere shortening. Caloric restriction focuses on extending lifespan by reducing calorie intake, oxidative stress theory suggests that aging is caused by cumulative damage from reactive oxygen species, and cross-link theory emphasizes the accumulation of non-reversible bonds between molecules as a cause of aging.