Correct Answer: B

Rationale: The correct answer is B: "Ensure the chest tube is connected to a closed drainage system." This is a critical nursing action when managing a patient with a chest tube because it is essential for proper drainage and to prevent complications such as air leaks or infections. Option A is incorrect because keeping the chest tube clamped at all times would prevent proper drainage and could lead to complications. Option C is incorrect as emptying the chest tube drainage system should be done based on assessment findings rather than a fixed time interval. Option D is incorrect because disconnecting the chest tube when the patient is ambulating can lead to complications like a pneumothorax.

Correct Answer: A

Rationale: In the event of poisoning, the recommended first action is to call the poison control center. Poison control specialists can provide immediate guidance on how to manage the situation effectively. Bringing the child to the emergency department (Choice B) may be necessary depending on the severity of the poisoning, but contacting poison control first is crucial for appropriate and timely intervention. Inducing vomiting (Choice C) is not advised in all cases of poisoning and should only be done under the guidance of healthcare professionals. Calling an ambulance (Choice D) may be necessary in some severe cases, but the initial step should be to contact poison control for expert advice.

Correct Answer: A

Rationale: The correct answer is to encourage early ambulation and leg exercises. By promoting early ambulation and leg exercises, blood flow is enhanced, reducing the risk of venous thromboembolism (VTE) in postoperative patients. Choice B, applying compression stockings, helps prevent VTE but is not as effective as early ambulation and exercises. Choice C, administering anticoagulants, is important in VTE prevention but does not directly address improving circulation through physical activity. Choice D, elevating the patient's legs, may be beneficial for circulation in specific cases but is not as effective in preventing VTE as early ambulation and leg exercises.

Correct Answer: D

Rationale: The correct action for the nurse is to place a surgical mask on the client for transport and for contact with other individuals when a patient under airborne precautions requires movement. This helps prevent the spread of infectious agents. Planning to have the nuclear scan at the bedside (Choice A) may not be feasible or appropriate. Calling the nuclear medicine department to delay the test (Choice B) may inconvenience the client and disrupt the scheduled procedure. Asking technicians in the nuclear scan department to wear masks (Choice C) does not provide adequate protection for others who may come into contact with the client outside the department.

Correct Answer: B

Rationale: When a health care provider orders a medication with a dosage significantly higher than usual, the nurse's initial action should be to question the provider and verify the dose. This is crucial to ensure patient safety and prevent medication errors. Administering the medication as ordered (Choice A) without clarification could potentially harm the patient if there was an error in the prescription. Administering half the dosage as a precaution (Choice C) is not a safe practice as it deviates from the prescribed order. Refusing to administer the medication without clarification (Choice D) is important, but the first step should be to seek clarification from the provider to prevent any unnecessary delays in patient care.