Correct Answer: D

Rationale: Using sterile technique when accessing the catheter is crucial to prevent infection in clients with a central venous catheter. This action helps maintain asepsis and reduces the risk of introducing pathogens into the catheter system. Flushing the catheter with heparin helps prevent occlusion but is not as crucial as ensuring sterile technique. Changing the dressing at the insertion site is important for assessing the site's condition but does not directly impact the administration of the antibiotic. Checking for blood return is essential to ensure proper catheter function, but sterile technique takes precedence to prevent infections.

Correct Answer: D

Rationale: In a client with acute pancreatitis and a history of alcohol abuse, a temperature of 101°F (38.3°C) can indicate infection, which is a serious complication requiring immediate intervention. Elevated amylase and lipase levels are common in acute pancreatitis but do not directly indicate the need for urgent intervention. A calcium level of 8.5 mg/dL is within the normal range and does not require immediate action in this context.

Correct Answer: C

Rationale: The recommended option for managing stress during final exams is a balanced and nutritious meal. Fruit salad with fresh berries and oranges, chicken vegetable soup, and tea offer a variety of nutrients and antioxidants that can help combat stress. Option A is not ideal as it includes high-fat and high-calorie foods. Option B is a good choice, but Option C provides a wider range of nutrients and hydration. Option D is a healthy choice with a variety of proteins and vitamins, but Option C offers lighter options that may be easier to digest during stressful times.

Correct Answer: D

Rationale: In a client with diabetic ketoacidosis (DKA), urine output of 50 mL in 4 hours indicates oliguria, which is a concerning sign of decreased renal perfusion and potential renal failure. This finding requires immediate intervention to prevent further deterioration of kidney function.\n\nChoice A (Blood glucose of 200 mg/dL) is elevated but not the most urgent concern in this scenario. Choice B (Serum bicarbonate of 20 mEq/L) reflects metabolic acidosis, which is expected in DKA but does not require immediate intervention. Choice C (Blood pressure of 140/90 mm Hg) is slightly elevated but not acutely concerning in the context of DKA.

Correct Answer: B

Rationale: Atropine, an anticholinergic medication, is used preoperatively to prevent bradycardia by increasing the automaticity of the sinoatrial node during surgical anesthesia. Choice A is incorrect because atropine does not affect gastric motility. Choice C is incorrect as atropine is not primarily used to reduce secretions. Choice D is also incorrect because preventing nausea and vomiting is not the primary purpose of administering atropine in this context.