Correct Answer: A

Rationale: Placing capped needles and syringes in puncture-resistant containers is the correct intervention to reduce infection reservoirs in healthcare settings. This practice helps prevent accidental needle-stick injuries and contains potentially infectious materials properly. Keeping bedside table surfaces clean and dry (choice B) is essential for preventing the spread of infections but does not directly address reducing reservoirs of infection. Changing dressings that become wet or soiled (choice C) is important for wound care but does not specifically target infection reservoirs. Placing tissues and soiled dressings in paper bags (choice D) is a proper waste disposal practice but does not directly reduce reservoirs of infection in a healthcare setting.

Correct Answer: A

Rationale: When a task is assigned that is outside the scope of a nursing assistant, it is essential for the assistant to refuse the task and report it to the charge nurse. This ensures that tasks are appropriately delegated, maintaining patient safety and adherence to professional standards. Performing the task without reporting can lead to potential risks for the patient and legal implications. Asking another nurse to perform the task may not address the issue of improper delegation. Accepting the task but documenting it later does not resolve the immediate concern of working within the assistant's scope of practice and seeking appropriate delegation.

Correct Answer: C

Rationale: Measuring the calf circumference of both legs is crucial when assessing for DVT in an immobile patient. A significant increase in the circumference of one calf compared to the other suggests the presence of a deep vein thrombosis. Option A is incorrect because rubbing the lower leg may dislodge a clot if present. Option B is incorrect as elastic stockings should not be removed frequently as this can increase the risk of clot formation. Option D is incorrect as dorsiflexing the foot can lead to pain and should not be done to assess for DVT.

Correct Answer: B

Rationale: Verifying the patient's identity using two identifiers is crucial to ensure the right patient receives the right medication. This process helps prevent medication errors by confirming the patient's identity through at least two unique identifiers, such as name, date of birth, or medical record number. Choice A is not directly related to ensuring patient safety during medication administration. Choice C is incorrect as medications should be prepared in a sterile environment, not just at the healthcare professional's station. Choice D is not a safe practice as medications should be administered at the scheduled time to maintain therapeutic effectiveness.

Correct Answer: B

Rationale: The correct answer is to discontinue the medication and notify the healthcare provider when a patient is experiencing an allergic reaction to a medication. This action is crucial to prevent further harm to the patient. Monitoring blood pressure (choice A) or urine output (choice D) may be important but is not the priority when managing an allergic reaction. Administering an antihistamine (choice C) should only be done after discontinuing the medication and consulting with the healthcare provider.