Correct Answer: A

Rationale: Terbutaline is contraindicated in clients with heart disease due to the risk of tachycardia and other cardiac complications associated with beta-agonists.

Correct Answer: A

Rationale: Lower back pain, especially if accompanied by uterine contractions or pressure, can be a sign of preterm labor. The client should report this immediately to prevent complications or early delivery.

Correct Answer: C

Rationale: Pruritus is a common adverse effect of epidural anesthesia, often due to the opioids administered with the epidural. This can cause significant discomfort and may require treatment.

Correct Answer: D

Rationale: A respiratory rate of 50 breaths per minute with occasional periods of apnea lasting less than 15 seconds is normal for a newborn. The nurse should continue routine monitoring unless the apneic periods become prolonged or the newborn shows signs of respiratory distress.

Correct Answer: B

Rationale: Moderate tremors of the extremities are a common sign of opioid withdrawal in newborns. Other signs may include irritability, feeding difficulties, and gastrointestinal disturbances.