Correct Answer: C

Rationale: An oxygen saturation of 90% is below the expected reference range and could indicate respiratory depression, a serious side effect of morphine. This finding requires immediate attention as it may lead to hypoxia. Nausea (choice A) is a common side effect of morphine but does not pose an immediate threat. A urinary output of 20 mL/hr (choice B) may indicate decreased renal perfusion but is not as critical as respiratory compromise. A respiratory rate of 14/min (choice D) is within the normal range and does not suggest immediate danger.

Correct Answer: D

Rationale: The correct answer is D because assault involves threatening a client with harm or unwanted procedures. In this scenario, informing a client that they will be given an injection against their will constitutes assault. Choices A, B, and C do not involve the element of threatening harm or unwanted procedures, making them incorrect. Choice A is more related to neglect, choice B is related to informing the client about a procedure, and choice C is related to informed consent and refusal of treatment, not assault.

Correct Answer: A

Rationale: The most important consideration in managing a patient with heart failure is to monitor daily weight. This allows healthcare providers to assess fluid retention, adjust medications based on weight changes, and detect early signs of worsening heart failure. While oxygen therapy may be necessary in acute situations, it is not a routine management strategy for stable heart failure patients. Encouraging a low-sodium diet is important to manage fluid retention, but daily weight monitoring is a more direct measure of fluid status. Monitoring for signs of fluid overload is essential, but monitoring daily weight is a proactive approach to detect fluid accumulation before overt symptoms appear.

Correct Answer: A

Rationale: When administering IV antibiotics, it is essential for the nurse to verify the antibiotic dosage and check for any allergies the patient may have. This is crucial to ensure that the correct medication is being given at the proper dose and to prevent potential adverse reactions. Choice B is incorrect because administering medication without verification can lead to errors. Choice C is incorrect as it goes against safe medication administration practices. Choice D is incorrect as the focus should be on checking if the patient has allergies to antibiotics, not ensuring the patient is allergic to them.

Correct Answer: A

Rationale: The priority for the nurse when caring for a patient with a chest tube is to ensure tube patency and observe for air leaks. This is essential to prevent complications such as pneumothorax and ensure the patient's lung function. While maintaining sterile technique during dressing changes, monitoring drainage, recording output, and observing for signs of infection and subcutaneous emphysema are also important, ensuring tube patency takes precedence as it directly impacts the patient's respiratory status and overall safety.