Correct Answer: A

Rationale: Corrected Rationale: Dehydration in the elderly is often signaled by dry mouth, confusion, and decreased skin turgor due to reduced fluid intake. Choice A is the correct answer as these are common signs and symptoms of dehydration in the elderly.\nIncorrect Rationales: Option B (Increased heart rate and muscle cramps) are more associated with conditions like hyperthyroidism or electrolyte imbalances rather than dehydration. Option C (Fever, rapid breathing, and increased urine output) are signs of other medical conditions such as infections or diabetes insipidus. Option D (Increased thirst and difficulty walking) can be seen in various situations but are not specific signs of dehydration in the elderly.

Correct Answer: A

Rationale: The correct answer is A. Putting the glove on the dominant hand first is a key step in maintaining sterile technique as it reduces the risk of contamination. By covering the dominant hand first, the nurse minimizes the risk of contaminating the other hand during the glove application process. Choices B, C, and D are incorrect. Choice B introduces the concept of a sterile gown, which is not relevant to the question about applying sterile gloves. Choice C is incorrect as putting sterile gloves last does not follow the correct sequence of steps in maintaining sterility. Choice D, while important, is not as critical as covering the dominant hand first when applying sterile gloves.

Correct Answer: D

Rationale: In managing hyperkalemia, it is essential to administer insulin and glucose to shift potassium into the cells, restrict potassium intake to prevent further elevation of serum levels, and monitor the ECG for signs of potassium-induced cardiac effects. Therefore, the correct answer is D, as all of the provided actions are important in the management of hyperkalemia. Choice A alone is not sufficient as it only addresses shifting potassium intracellularly without preventing further elevation. Choice B alone is not enough as it does not address the immediate need to lower serum potassium levels. Choice C alone is insufficient as it only monitors for cardiac effects without addressing potassium levels or shifting mechanisms.

Correct Answer: B

Rationale: In clients with dementia, restlessness and agitation are important symptoms that the nurse should address first. These symptoms can indicate underlying issues such as pain, discomfort, or unmet needs, and addressing them promptly can prevent complications. Psychosocial stressors may contribute to the client's condition but should not be the initial priority. Frequent wandering at night and urinary incontinence are also common in dementia but do not pose immediate risks compared to restlessness and agitation.

Correct Answer: B

Rationale: The correct answer is B: 'Monitor the client's weight daily.' In clients with heart failure on fluid restriction, monitoring daily weight is crucial to track fluid balance. This allows healthcare providers to assess if the client is retaining excess fluid, a common issue in heart failure. Choices A, C, and D are incorrect. Encouraging the client to drink more water contradicts the fluid restriction; avoiding drinking water after 6 PM is not specific to managing fluid restriction; and monitoring fluid intake only during meals does not provide a comprehensive assessment of fluid balance throughout the day.