What is the most common type of vision impairment in older adults?

Correct Answer: A

Rationale: The correct answer is A: Cataracts. Cataracts are the most common type of vision impairment in older adults due to the clouding of the eye's lens. As people age, proteins in the lens can clump together, leading to vision issues. Glaucoma (B) is characterized by damage to the optic nerve, AMD (C) affects the macula in the retina, and diabetic retinopathy (D) is a complication of diabetes affecting blood vessels in the retina. However, cataracts are the primary cause of vision impairment in older adults due to the natural aging process of the eye.

Correct Answer: A

Rationale: The correct answer is A because walking is a physical activity that promotes cardiovascular health, strength, and overall well-being. Regular exercise like walking 3-5 times per week for 30 minutes can help improve circulation, maintain healthy weight, and reduce the risk of chronic diseases. Cooking healthy meals (choice B) is important for nutrition but may not directly promote physical activity. Reading and knitting (choice C) are mentally stimulating but do not provide the physical benefits of exercise. Taking vitamins daily (choice D) is important for overall health but does not substitute for physical activity.

Correct Answer: D

Rationale: The correct answer is D: Asian and Pacific Island Americans. This group has the highest life expectancy in the US due to various factors such as healthy dietary habits, lower rates of smoking and alcohol consumption, access to quality healthcare, and strong social support systems. They also tend to engage in regular physical activity and have lower rates of obesity and chronic diseases compared to other racial or ethnic groups. In contrast, choices A, B, and C have lower life expectancies due to factors such as higher rates of poverty, inadequate healthcare access, systemic racism, and higher prevalence of chronic health conditions like diabetes and heart disease.

Correct Answer: B

Rationale: The correct answer is B: Disengagement theory. This theory suggests that as people age, they naturally withdraw or disengage from societal roles and responsibilities. Mandatory retirement at age 65 aligns with this theory as it reflects the societal expectation of older individuals stepping back from work roles. Role theory (A) focuses on how individuals adapt to various social roles throughout their lives, not specifically related to retirement. Age-stratification theory (C) emphasizes how age impacts societal structures and opportunities, not retirement policies. Social exchange theory (D) focuses on relationships and interactions based on the exchange of resources, not specifically related to retirement age policies.

Correct Answer: B

Rationale: The correct answer is B: Delirium in older adults results from reversible metabolic changes, such as electrolyte imbalances. Delirium is a multifactorial condition often triggered by physiological imbalances, including electrolyte disturbances. These imbalances can disrupt normal brain function, leading to confusion and cognitive impairment. Other choices are incorrect: A is more typical of sepsis, C is more associated with conditions like dementia, and D is not a primary cause of delirium.

Correct Answer: D

Rationale: The correct answer is D: Infection. Older adults with diabetes are more vulnerable to infections due to weakened immune systems caused by high blood sugar levels. Infections can lead to severe complications and hospitalization. Stroke (A) is a common complication of diabetes but not the most common cause of hospitalization. Hypoglycemia (B) and diabetic ketoacidosis (C) are acute complications of diabetes but are less common causes of hospitalization compared to infections.

Correct Answer: D

Rationale: The correct answer is D: Lack of physical exercise contributes the most to aging-related cognitive decline. Regular physical exercise increases blood flow to the brain, promotes neurogenesis, and enhances cognitive function. It also reduces the risk of developing conditions such as dementia and Alzheimer's disease. Chronic stress (A) can impact cognitive function, but it is not the primary factor in aging-related decline. Poor nutrition (B) can negatively affect brain health, but exercise has a more significant impact. Social isolation (C) is also detrimental to cognitive health, but physical exercise has been shown to have a more substantial influence on cognitive decline in aging individuals.

Correct Answer: C

Rationale: The correct answer is C because loss of vision in one eye is not a typical sign or symptom of Parkinson's disease. A, B, and D are all common signs of Parkinson's disease. A - Mask-like facial expressions result from decreased facial muscle movement. B - Shuffling gait is a characteristic walking pattern in Parkinson's patients. D - Tremors without intention (at rest) are a classic symptom of Parkinson's disease due to disrupted brain signals. Therefore, C is the odd one out as it is not directly associated with Parkinson's disease manifestations.

Correct Answer: D

Rationale: The correct answer is D because reviewing a menu with the older man allows for personalized food selection, taking into account his preferences and dietary restrictions. This approach promotes adherence to a healthy eating plan, leading to better cholesterol management and overall wellness. Choice A is not the best option as simply instructing him to increase dietary fiber may not address his specific dietary needs. Choice B suggests asking the health care provider for a low-fat diet, which may not consider the individual's food preferences or cultural background. Choice C of scheduling a consultation with a dietitian is a good option, but it may not be as immediately accessible or practical as reviewing a menu together with the individual.