Correct Answer: A

Rationale: The correct answer is A because the nurse is using data validation by comparing the time of the last dressing change with the appearance of old and new drainage. This process ensures that the decision to remove the wound dressing is based on accurate and relevant information. By assessing both the time of the last dressing change and the characteristics of the drainage, the nurse is validating the need for the intervention. Option B is incorrect because administering pain medicine based solely on a patient's report of increased pain without further validation does not demonstrate data validation. Option C is incorrect as the nurse immediately requesting an order of potassium without further assessment of the patient's condition is not an example of data validation. Option D is incorrect as elevating a leg cast based solely on a patient's report of decreased mobility without further assessment does not involve data validation.

Correct Answer: C

Rationale: Rationale: 1. Insulin is a hormone produced by beta cells of the pancreas. 2. Beta cells are responsible for monitoring blood glucose levels and secreting insulin in response to high glucose levels. 3. Insulin helps regulate blood glucose by facilitating glucose uptake into cells. 4. Adenohypophysis secretes other hormones, not insulin. 5. Alpha cells of the pancreas secrete glucagon, not insulin. 6. Parafollicular cells of the thyroid secrete calcitonin, not insulin. Summary: Choice C is correct because insulin is indeed secreted from the beta cells of the pancreas. Choices A, B, and D are incorrect as they do not secrete insulin or are related to other hormones.

Correct Answer: A

Rationale: The correct answer is A because in surgical asepsis, sterile articles should not touch other sterile articles or surfaces to maintain sterility. Choice B is correct as surgical team gowns are sterile in front. Choice C is correct as any breach makes the area contaminated. Choice D is correct as sterile drapes create a sterile field.

Correct Answer: B

Rationale: The correct answer is B: Tinnitus. Aspirin can cause tinnitus (ringing in the ears) as an adverse drug reaction, which can indicate potential ototoxicity. Tinnitus is an important side effect that should be reported promptly to the physician to prevent further auditory complications. Dysuria (A), leg cramps (C), and constipation (D) are not typically associated with aspirin use and are less urgent compared to tinnitus. Reporting these side effects may still be necessary but are not as critical as tinnitus in this scenario.

Correct Answer: C

Rationale: The correct answer is C: Avoid sudden movements. Vertigo is a type of dizziness where a person feels like they're spinning or the world around them is spinning. Sudden movements can worsen vertigo symptoms. By avoiding sudden movements, the nurse can help reduce the patient's vertigo symptoms. Avoiding noises (A) may help with other conditions like migraines, but it is not specifically helpful for vertigo. Encouraging fluid intake (B) is important for overall health but does not directly address vertigo symptoms. Administering analgesics (D) may help with pain but will not address the underlying cause of vertigo. Therefore, choosing option C is the most appropriate action to include in the plan of care for reducing vertigo symptoms.