Correct Answer: C

Rationale: The correct action for the nurse to take is to administer naloxone if the client's respiratory rate falls below 10/min. Naloxone is used to reverse opioid-induced respiratory depression, which is a life-threatening situation. Monitoring the client's blood pressure every 4 hours (Choice A) is not the priority in this scenario as respiratory depression requires immediate attention. Asking the client to rate their pain every 2 hours (Choice B) is important for pain management but addressing respiratory depression takes precedence. Evaluating the client's use of the PCA every 4 hours (Choice D) is a routine nursing intervention but does not directly address the urgent need to reverse respiratory depression in this case.

Correct Answer: A

Rationale: A continuous murmur is a classic finding in a newborn with patent ductus arteriosus. This murmur is typically heard between the first and second heart sounds and throughout systole. Absent peripheral pulses (choice B) are not typically associated with patent ductus arteriosus. Increased blood pressure (choice C) and bounding pulses (choice D) are not commonly seen with this condition. Therefore, the correct answer is A.

Correct Answer: A

Rationale: Nuchal rigidity is a classic sign of bacterial meningitis and indicates inflammation of the meninges. It is characterized by neck stiffness and pain upon neck flexion. Flaccid paralysis (Choice B) is not typically associated with bacterial meningitis but rather conditions like Guillain-Barre syndrome. Bradycardia (Choice C) and hypothermia (Choice D) are not commonly seen in bacterial meningitis; instead, patients may present with fever, tachycardia, and signs of systemic inflammation.

Correct Answer: B

Rationale: Cheddar cheese is a rich source of calcium and should be recommended to clients with osteoporosis. While broccoli and almonds also contain calcium, cheddar cheese provides a higher amount per serving. Fortified orange juice may contain added calcium, but it is not as concentrated a source as cheddar cheese. Therefore, the best choice for a client with osteoporosis seeking a high calcium food is cheddar cheese.

Correct Answer: C

Rationale: The correct answer is C. Folic acid helps prevent neural tube defects, and dietary sources like cereals and citrus fruits are good options to increase folic acid intake. Choice A is incorrect because folic acid is primarily recommended to prevent neural tube defects, not to prevent infections. Choice B is incorrect because the recommended daily intake of folic acid for pregnant women is at least 400 micrograms, not 300. Choice D is incorrect because folic acid is not typically associated with improving energy levels.