After teaching a pregnant woman about the hormones produced by the placenta, the nurse determines that the teaching was successful when the woman identifies which hormone produced as being the basis for pregnancy tests?

Choice A reason:

Maternal exhaustion is a maternal indication for the use of vacuum extraction. Vacuum extraction is a technique that can assist the mother in delivering the baby when she is unable to push effectively or when pushing poses a risk to her health. Vacuum extraction can shorten the second stage of labor and reduce maternal fatigue and distress. According to the Cleveland Clinic, vacuum extraction might be indicated if "the mother can't push anymore, either due to exhaustion or a health condition.".

Choice B reason:

Failure to progress past 0 station is not a maternal indication for the use of vacuum extraction. The station refers to the position of the baby's head in relation to the mother's pelvis. 0 station means that the baby's head is at the level of the pelvic inlet, or the narrowest part of the pelvis. Vacuum extraction is usually not performed before the baby reaches +2 station, which means that the head is 2 cm below the pelvic inlet and visible at the vaginal opening. According to the American Academy of Family Physicians, vacuum extraction should not be attempted if "the fetal head is not engaged (above 0 station).".

Choice C reason:

A wide pelvic outlet is not a maternal indication for the use of vacuum extraction. The pelvic outlet is the lower part of the pelvis that forms the exit for the baby during delivery. A wide pelvic outlet means that there is more space for the baby to pass through, which can facilitate vaginal delivery and reduce the need for instrumental assistance. Vacuum extraction is more likely to be indicated when there is a narrow pelvic outlet, which can obstruct labor and cause fetal distress.

Choice D reason:

A history of rapid deliveries is not a maternal indication for the use of vacuum extraction. Rapid deliveries, also known as precipitous deliveries, are those that occur within 3 hours of the onset of labor. Rapid deliveries can pose risks to both the mother and the baby, such as excessive bleeding, umbilical cord prolapse, or birth trauma. However, vacuum extraction is not usually indicated in these cases, as it requires time and preparation to apply the device and monitor its effects. Vacuum extraction is more likely to be indicated when labor is prolonged or stalled in the second stage, and when there is a nonreassuring fetal heart rate.

A. The woman had a vacuum-assisted birth. While vacuum-assisted births can cause perineal trauma, the specific orders for ice packs, sitz baths, and stool softeners are more directly related to an episiotomy, which involves a surgical incision that requires careful postpartum care.

B. The woman is a gravida 2, para 2. This information indicates the woman's obstetric history but does not directly correlate with the need for perineal ice packs, sitz baths, and stool softeners. These orders are more specific to perineal trauma or surgical intervention.

C. The woman has an episiotomy. An episiotomy involves a surgical cut made at the opening of the vagina during childbirth, which can cause significant perineal pain and swelling. The orders for perineal ice packs, sitz baths, and stool softeners are intended to manage pain, reduce swelling, and prevent constipation, which can be particularly uncomfortable with perineal stitches.

D. The woman received epidural anesthesia. While epidural anesthesia is a common pain management technique during labor, it does not necessitate the use of perineal ice packs, sitz baths, or stool softeners postpartum. These orders are more indicative of perineal trauma or surgical intervention such as an episiotomy.