Correct Answer: C

Rationale: Step-by-step rationale: 1. Providing oral care does not directly address fluid balance or hydration status. 2. Oral care focuses on maintaining oral hygiene and preventing infections. 3. Choices A, B, and D all involve fluid intake to address dehydration. 4. Offering large amounts of fluid, enteral or parenteral fluids, and small volumes at frequent intervals all aim to correct the patient's condition by replenishing lost fluids. Summary: Choice C is incorrect because oral care does not directly address the patient's dehydration. Choices A, B, and D are better options as they focus on fluid replacement to correct the patient's condition.

Correct Answer: A

Rationale: Step-by-step rationale for why choice A is correct: 1. Enalapril maleate is an angiotensin-converting enzyme (ACE) inhibitor. 2. ACE inhibitors like enalapril maleate block the conversion of angiotensin I to angiotensin II. 3. By inhibiting the formation of angiotensin II, enalapril maleate decreases the levels of angiotensin II. 4. Angiotensin II is a potent vasoconstrictor, so decreasing its levels leads to vasodilation and decreased blood pressure. Summary of why other choices are incorrect: - Choice B: Enalapril maleate primarily dilates arterioles by decreasing angiotensin II levels, not veins. - Choice C: Enalapril maleate does not directly adjust extracellular volume; it primarily affects the renin-angiotensin-aldosterone system. - Choice D: Enalapril maleate

Correct Answer: A

Rationale: The correct answer is A because monitoring the client's temperature before, during, and after the transfusion allows the nurse to identify any changes or trends that may indicate a complication related to the blood transfusion. This comprehensive monitoring helps differentiate between a normal body response to cold blood infusion and a potential adverse reaction. Choice B is incorrect because documenting the client's temperature only after the transfusion may miss important changes during the process. Choice C is incorrect as the temperature of the blood before transfusion does not directly indicate the client's response to the chilled blood. Choice D is incorrect as comparing the client's temperature with the temperature of the blood alone does not provide a complete picture of the client's condition throughout the transfusion process.

Correct Answer: A

Rationale: The correct answer is A. First, the nurse should assess the chest-drainage system and tubing for any air leaks. Air leaks can cause bubbling in the water-seal chamber, indicating a potential issue with the system's integrity. By examining the entire system, the nurse can identify and correct any leaks to ensure proper functioning of the chest-drainage system. Lowering the level of suction (choice B) may not address the underlying issue of air leaks. Doing nothing (choice C) is not appropriate as vigorous bubbling indicates a problem. Asking the patient to cough forcefully (choice D) is unrelated to addressing bubbling in the water-seal chamber.

Correct Answer: A

Rationale: Step 1: Pulmonary edema is caused by fluid accumulation in the lungs due to increased pressure in the pulmonary vasculature. Step 2: Decreased left ventricular pumping leads to congestive heart failure, causing increased pressure in pulmonary circulation. Step 3: This increased pressure forces fluid from the capillaries into the alveoli, causing pulmonary edema. Step 4: Increased left atrial contractility (B) would not directly lead to pulmonary edema. Step 5: Decreased right ventricular elasticity (C) and increased right atrial pressure (D) are not directly related to the pathophysiology of pulmonary edema. Summary: The correct answer is A because decreased left ventricular pumping directly contributes to the increased pressure in the pulmonary circulation that leads to pulmonary edema. Choices B, C, and D do not align with the primary underlying disorder of pulmonary edema.