An emergency shoulder dystocia delivery occurred that requires the nurse to apply suprapubic pressure. What is the rationale for this action?

A. No action is necessary since a decrease in the woman's blood pressure is expected. While a drop in blood pressure is a common side effect of a spinal block, a 20% decrease is significant and can compromise placental perfusion, leading to fetal distress. Intervention is necessary to restore circulation.

B. Decrease her intravenous (IV) rate to a keep vein-open rate. This is incorrect because IV fluids help counteract hypotension. Instead of decreasing the IV rate, the nurse may need to increase fluid administration to improve blood pressure and maintain perfusion.

C. Encourage her to empty her bladder. A full bladder can affect labor progression but does not directly cause or correct hypotension. The priority in this scenario is restoring blood pressure to ensure adequate fetal oxygenation.

D. Turn the woman to the left lateral position or place a pillow under her hip. This is the most appropriate intervention. A left lateral position or elevating her right hip helps relieve aortocaval compression, improving blood flow to the uterus and stabilizing blood pressure. Additional interventions, such as IV fluid boluses or vasopressors (e.g., ephedrine), may be needed if hypotension persists.

A. Quantity of vaginal bleeding. While both placenta previa and abruptio placentae can cause vaginal bleeding, the amount alone does not differentiate between the two conditions. Placenta previa typically causes painless, bright red bleeding, whereas abruptio placentae often presents with concealed or variable bleeding, making quantity an unreliable distinguishing factor.

B. Presence of abdominal pain. Abdominal pain is a key differentiating factor. Placenta previa is characterized by painless vaginal bleeding, while abruptio placentae causes sudden, severe abdominal pain due to placental detachment and uterine muscle irritation. This makes the presence or absence of pain an important assessment finding.

C. Leopold's maneuver results. While Leopold’s maneuvers help determine fetal position and presentation, they do not provide definitive information about the location of the placenta or differentiate between placenta previa and abruptio placentae. Ultrasound is a more reliable diagnostic tool for this purpose.

D. Maternal blood pressure. Although abruptio placentae can lead to hypovolemic shock and blood pressure changes due to hemorrhage, maternal blood pressure alone is not a primary diagnostic criterion for differentiating between the two conditions. Other clinical findings such as pain and ultrasound results are more useful for diagnosis.