Correct Answer: B

Rationale: The correct instruction for a client who is postpartum and had a cesarean birth is to not lift anything heavier than her newborn. This precaution is crucial to prevent injury to the healing incision site and allow for proper recovery. Choice A is incorrect as it implies resuming abdominal exercises in 2 weeks, which may strain the incision area. Choice C is incorrect because the client should wait longer than 1 week before driving to ensure they can perform emergency maneuvers if needed. Choice D is incorrect as resuming sexual activity in 2 weeks may put strain on the healing tissues and increase the risk of complications.

Correct Answer: C

Rationale: Corrected Rationale: Magnesium sulfate can cause respiratory depression, leading to a decreased respiratory rate. A respiratory rate of 10/min is abnormally low and indicates magnesium toxicity. Tachycardia (Choice A) is not typically associated with magnesium toxicity. Hyperreflexia (Choice B) is a common sign of magnesium toxicity. Polyuria (Choice D) is not a typical finding of magnesium toxicity.

Correct Answer: D

Rationale: To prevent mastitis, the nurse should instruct the client to ensure that the newborn empties one breast before switching to the other. This helps to prevent milk stasis, reducing the risk of inflammation and infection. Choice A is incorrect because feeding on demand is recommended to establish a good milk supply and prevent engorgement. Choice B is incorrect as warm compresses are usually applied before feeding to promote milk flow. Choice C is incorrect because massaging the breast after feedings can actually increase the risk of mastitis by causing further irritation.

Correct Answer: B

Rationale: The correct action the nurse should take first when observing variable decelerations in the fetal heart rate is to reposition the client from side to side. Variable decelerations are often caused by umbilical cord compression, and repositioning the client can relieve pressure on the cord. Administering oxygen, increasing the IV infusion rate, and notifying the provider can be appropriate actions but repositioning the client takes priority in addressing variable decelerations.

Correct Answer: B

Rationale: Newborns who are large for gestational age (LGA) are at risk for hypoglycemia due to increased insulin production. Hyperbilirubinemia (Choice A) is more commonly associated with ABO or Rh incompatibility. Hypercalcemia (Choice C) is not a common finding in LGA newborns. Hypothermia (Choice D) may occur in newborns who are small for gestational age (SGA) due to a lack of subcutaneous fat for insulation, but it is not typically associated with LGA newborns.