What is the primary reason older adults are at higher risk for adverse reactions to anesthesia?

Correct Answer: D

Rationale: The correct answer is D: Age-related changes in liver function. As people age, there are changes in liver metabolism and blood flow, affecting the processing of anesthetic agents. Liver function declines with age, leading to slower drug metabolism and clearance, increasing the risk of adverse reactions. Decreased muscle mass (A) may affect drug distribution but not metabolism. Decreased renal function (B) can impact drug excretion but is not the primary reason for adverse reactions. Increased body fat (C) can alter drug distribution but is not the main factor in anesthesia reactions for older adults.

Correct Answer: B

Rationale: Step 1: Conducting regular reviews allows nurses to assess the necessity and appropriateness of each medication, addressing potential drug interactions, duplications, and side effects in elderly patients. Step 2: This proactive approach helps prevent polypharmacy-related complications and ensures optimal medication management. Step 3: Ensuring medications are taken exactly as directed (A) may not address the root cause of polypharmacy. Recommending over-the-counter medications (C) without proper evaluation can worsen the issue. Administering medications only during hospital stays (D) is not a comprehensive solution outside of the hospital setting.

Correct Answer: A

Rationale: The correct answer is A because as individuals age, there is a decrease in renal function leading to reduced renal clearance of drugs. This results in a longer drug half-life and potentially increased drug accumulation in the body. Choice B is incorrect as aging often leads to a decrease in hepatic metabolism, not faster metabolism. Choice C is incorrect because aging can actually lead to reduced gastrointestinal absorption due to changes in the gastrointestinal tract. Choice D is incorrect as aging can result in decreased circulation, which may affect drug distribution negatively.

Correct Answer: C

Rationale: The correct answer is C: Monitoring for electrolyte imbalances and adjusting medications accordingly. In advanced CKD, electrolyte imbalances can worsen kidney function and lead to complications. Monitoring electrolytes like potassium and adjusting medications such as diuretics is crucial. A: Initiating early dialysis is not always necessary and should be based on individual patient factors. B: Avoiding all medications is not feasible as some medications are essential and can be adjusted based on kidney function. D: Limiting fluid intake to less than 500 mL per day is too restrictive and can lead to dehydration.

Correct Answer: B

Rationale: Correct Answer: B Rationale: The thymus gland is responsible for producing T-cells, crucial for immune responses. As individuals age, the thymus gland shrinks and becomes less efficient, reducing the production of new T-cells. This decline in T-cell production weakens the immune response in older adults, making them more susceptible to infections. Therefore, choice B is correct. Summary of Incorrect Choices: A: Aging does not increase the production of white blood cells. In fact, the immune system may weaken with age due to a decline in key immune cells. C: Aging does not improve the body's ability to recognize and fight off pathogens. Instead, it often leads to a decline in immune function. D: While some inflammatory responses may increase with age, excessive inflammation can actually be harmful and contribute to age-related diseases, rather than providing protection.