Correct Answer: A

Rationale: The correct answer is A, dry mouth, and B, increased thirst are early indicators of dehydration. Dry mouth occurs when the body is dehydrated, and increased thirst is the body's way of trying to increase fluid intake to combat dehydration. Choices C and D, decreased urine output and dizziness, can be signs of severe dehydration but are not typically considered early indicators.

Correct Answer: A

Rationale: The term 'fidelity' specifically refers to the agreement to keep promises. Fidelity in healthcare ethics emphasizes the importance of healthcare professionals keeping their commitments to patients. Choice B, 'Non-maleficence,' relates to the ethical principle of doing no harm. Choice C, 'Autonomy,' refers to respecting a patient's right to make decisions about their own healthcare. Choice D, 'Justice,' pertains to fairness and equality in the distribution of healthcare resources.

Correct Answer: B

Rationale: The correct answer is to ensure the client consumes adequate protein. Protein is essential for wound healing as it supports tissue repair. Applying heat to the surgical site (choice A) is not recommended as it can increase inflammation. Although ambulation (choice C) is beneficial for circulation and preventing complications, it is not directly related to promoting wound healing. Instructing the client to drink 4 liters of water daily (choice D) is excessive and not specifically related to wound healing in this context.

Correct Answer: A

Rationale: A history of gastrointestinal bleeding is a critical finding to report to the healthcare provider because it is a contraindication for aspirin use in individuals with CAD. Aspirin can further increase the risk of bleeding in individuals with a history of gastrointestinal bleeding. Choices B, C, and D are not directly contraindications for aspirin use in this scenario. Asthma, liver disease, and hypertension are not typically contraindications for prescribing aspirin to patients with CAD.

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.