Correct Answer: A

Rationale: The correct answer is A: Chest physiotherapy. In cystic fibrosis, chest physiotherapy and aerosol medications are fundamental components of treatment to help clear mucus from the lungs, reduce the risk of infections, and improve breathing. Mucus-drying agents (Choice B) are not typically used in the treatment of cystic fibrosis. Prevention of diarrhea (Choice C) is not a primary focus in the treatment of cystic fibrosis. Insulin therapy (Choice D) is not relevant to cystic fibrosis, as it is a treatment for diabetes.

Correct Answer: C

Rationale: The correct answer is C because a child with bacterial meningitis should be isolated for at least 24 hours until antibiotic therapy has been initiated. This period allows the antibiotics to start working against the infection, reducing the risk of spreading it to others. Choice A is incorrect because isolation is not solely based on completing the course of antibiotics; the initiation is crucial. Choice B is incorrect as waiting for a negative CNS culture may take longer and delay necessary precautions. Choice D is incorrect as symptom resolution does not guarantee the eradication of the infection and may still pose a risk of transmission.

Correct Answer: B

Rationale: In a client with myasthenia gravis, difficulty swallowing is the most crucial symptom to report to the healthcare provider. This is because it can lead to aspiration, a severe complication in these clients. Diplopia (double vision) and weakness in the legs are common symptoms of myasthenia gravis but are not as immediately dangerous as difficulty swallowing. Fatigue is also a common symptom in myasthenia gravis but does not pose the same risk of aspiration as difficulty swallowing.

Correct Answer: A

Rationale: The correct answer is A: 'Weigh yourself daily and report a gain of 2 pounds in 24 hours.' Daily weight monitoring is crucial for detecting fluid retention early in clients with heart failure. Reporting a gain of 2 pounds in 24 hours can indicate fluid overload, prompting timely intervention. Choice B is incorrect because increasing fluid intake can exacerbate fluid overload in clients with heart failure. Choice C is incorrect as a high-sodium diet can worsen fluid retention. Choice D is incorrect as vigorous exercise can strain the heart and worsen heart failure symptoms.

Correct Answer: A

Rationale: When a postoperative client reports incisional pain and has two prescriptions for PRN analgesia, the nurse should first compare the client's pain scale rating with the prescribed dosing. This action ensures that the client receives the appropriate medication based on their pain level. Determining the onset of action or asking the client to choose the medication does not guarantee that the right medication is administered according to the pain intensity. Documenting the pain report is important but should not be the first action when deciding which medication to administer.