Correct Answer: D

Rationale: Instructing the patient to use the spirometer every hour is crucial for optimal lung expansion and to prevent postoperative pulmonary complications. This regular use helps to keep the lungs clear and maintain their capacity. Choices A, B, and C are incorrect because deep breathing, forceful coughing, and blowing into the spirometer do not specifically address the proper use of the incentive spirometer, which is essential for postoperative respiratory recovery.

Correct Answer: A

Rationale: Naloxone is the correct answer. Naloxone is specifically used to reverse the effects of opioid overdose by binding to opioid receptors and blocking the effects of opioids. Epinephrine is mainly used to treat severe allergic reactions, Atropine is used for certain types of heart conditions and to reduce salivation or respiratory secretions, and Lidocaine is a local anesthetic used for numbing purposes. Therefore, choices B, C, and D are incorrect in the context of reversing opioid overdose.

Correct Answer: B

Rationale: The most appropriate intervention for a patient with a suspected stroke is to perform a CT scan. A CT scan is crucial for diagnosing a stroke by visualizing any bleeding or blockages in the brain. Administering IV fluids (Choice A) may be necessary based on the patient's condition, but it is not the primary intervention for a suspected stroke. Performing a lumbar puncture (Choice C) is not indicated for stroke evaluation and may not provide relevant information. Administering anticoagulants (Choice D) is a treatment option for certain types of strokes but should be based on the CT scan results and specific guidelines.

Correct Answer: B

Rationale: The correct answer is B: PT/INR. When a patient is on warfarin therapy, healthcare providers monitor the PT/INR levels to evaluate the effectiveness of the treatment and assess the risk of bleeding. Monitoring potassium, sodium, or calcium levels is not directly related to warfarin therapy and would not provide the necessary information needed to manage the medication effectively.

Correct Answer: A

Rationale: The correct answer is A. A heart rate of 58/min is indicative of bradycardia, a potential sign of digoxin toxicity, which should be reported immediately. While weight gain, respiratory rate, and temperature are important parameters to monitor, they are not as critical as identifying bradycardia in a client taking digoxin.