A nurse is caring for a client who is at 22 weeks of gestation and has been unable to control her gestational diabetes mellitus with diet and exercise. The nurse should anticipate a prescription from the provider for which of the following medications for the client?

Choice A reason: This action is the first and most important intervention that the nurse should perform, as it can prevent or reduce the compression of the umbilical cord, which can cause fetal hypoxia, bradycardia, or death. The nurse should insert a gloved hand into the vagina and gently push the presenting part away from the cord, and maintain this position until the delivery.

Choice B reason: This action is not the first intervention that the nurse should perform, as it does not address the cause of the cord prolapse, which is the displacement of the cord below the presenting part. However, this action is helpful to prevent the drying and infection of the cord, and should be done after the first intervention.

Choice C reason: This action is not the first intervention that the nurse should perform, as it may not be effective or feasible depending on the stage of labor and the client's condition. However, this action is beneficial to reduce the pressure of the presenting part on the cord, and should be done after the first intervention.

Choice D reason: This action is not the first intervention that the nurse should perform, as it does not provide immediate relief or protection to the fetus. However, this action is necessary to expedite the delivery and prevent further complications, and should be done after the first intervention.

Choice A reason: Increased subcutaneous fat is not a typical finding in a newborn who was born at 42.5 weeks of gestation, because it is more characteristic of a term or preterm newborn. A postterm newborn tends to have less subcutaneous fat, and may appear thin and wasted.

Choice B reason: Dry, cracked skin is a common finding in a newborn who was born at 42.5 weeks of gestation, because the skin has been exposed to the amniotic fluid for a prolonged period. The skin may also appear peeling, wrinkled, or leathery.

Choice C reason: Scant scalp hair is not a usual finding in a newborn who was born at 42.5 weeks of gestation, because it is more characteristic of a preterm newborn. A postterm newborn tends to have more scalp hair, and may also have long nails and abundant lanugo.

Choice D reason: Copious vernix is not a specific finding in a newborn who was born at 42.5 weeks of gestation, because it is more characteristic of a term or preterm newborn. A postterm newborn tends to have little or no vernix, which is a white, cheesy substance that protects the skin in utero.