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: 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: C

Rationale: The correct answer is C: Pneumonia. Older adults are more susceptible to pneumonia due to weakened immune systems and underlying health conditions. Pneumonia can lead to severe complications, requiring hospitalization. Osteoarthritis (A) primarily affects joints and does not typically lead to hospitalization. Stroke (B) and heart failure (D) are serious conditions but may not be as common for hospitalization as pneumonia in older adults. Pneumonia's impact on the respiratory system and its ability to progress rapidly make it the most common reason for hospitalization in this population.

Correct Answer: A

Rationale: The correct answer is A: Regular repositioning every 2 hours. Repositioning helps to relieve pressure on vulnerable areas, improving blood flow and preventing tissue damage. This intervention is evidence-based and recommended in pressure ulcer prevention guidelines. Administering pain medications before repositioning (B) does not address the root cause of pressure ulcers. Encouraging excessive hydration (C) may have other health benefits but does not directly prevent pressure ulcers. Using restrictive bandages (D) can actually increase pressure and worsen the risk of pressure ulcers.

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.