A nurse is caring for a client who experienced a vaginal birth 12 hours ago. The nurse recognizes the client is in the dependent, taking-in phase of maternal postpartum adjustment. Which of the following findings should the nurse expect during this phase?

Choice A reason:
Initiating pushing in a client with suspected placenta previa is contraindicated. Placenta previa is a condition where the placenta covers the cervix, and pushing could lead to severe bleeding and compromise both the mother and the fetus. The normal labor process involves pushing only after full cervical dilation, and in the case of placenta previa, this could exacerbate the condition.

Choice B reason:
Preparation for cesarean birth is the correct action when placenta previa is suspected. With placenta previa, vaginal delivery could cause significant hemorrhage due to the placenta's position over the cervical opening. A cesarean birth bypasses the cervix, thereby avoiding disruption of the placenta and preventing excessive bleeding.

Choice C reason:
Magnesium sulfate is used in obstetrics to prevent seizures in preeclampsia and to delay preterm labor, not for placenta previa. While it is important to manage the client's overall condition, magnesium sulfate would not address the immediate concern of potential hemorrhage due to placenta previa.

Choice D reason:
An examination to determine cervical status in the presence of placenta previa should be avoided unless absolutely necessary and performed under controlled conditions, such as in an operating room where a cesarean delivery can be performed if needed. Digital cervical examinations can dislodge the placenta and cause bleeding.

Choice a reason:
The pattern of contractions can be a sign of true labor when they are regular, frequent, and increase in intensity and duration over time. In true labor, contractions do not subside with rest or hydration and become progressively more organized. However, contractions alone can be misleading, as Braxton Hicks contractions may also present a pattern but do not lead to cervical changes.

Choice b reason:
The station of the presenting part refers to the position of the baby's head (or presenting part) in relation to the ischial spines of the mother's pelvis. While the station can indicate how far labor has progressed, it is not a definitive sign of true labor. The station changes as labor progresses, but it can also be affected by other factors such as the baby's position.

Choice c reason:
Rupture of the membranes, commonly known as water breaking, can occur before or during labor. While it is a sign that labor may be imminent, it does not confirm true labor. Some women may experience premature rupture of membranes without contractions or cervical changes.

Choice d reason:
Changes in the cervix, including effacement (thinning) and dilation (opening), are the most reliable signs of true labor. Effacement is measured in percentages, and dilation is measured in centimeters. The cervix must be 100% effaced and dilated to 10 centimeters for childbirth to occur. These changes are a direct result of true labor contractions and indicate that the body is preparing for delivery.