Correct Answer: A

Rationale: A concealed hemorrhage in abruptio placentae, also known as a concealed retroplacental hematoma, can cause rapid, significant bleeding behind the placenta with limited visible external bleeding. This internal bleeding can lead to significant blood loss and can cause the uterus to become tense and firm, resulting in a hard board-like abdomen upon palpation. This clinical sign is a key indicator of a concealed hemorrhage in abruptio placentae and should prompt immediate medical attention to prevent maternal and fetal complications. The other choices, such as decreased fundal height, bradycardia, and decreased abdominal pain, are not typically associated with a concealed hemorrhage in abruptio placentae.

Correct Answer: C

Rationale: The Alexander Technique involves personalized assessment of posture and muscle tension by a trained instructor.

Correct Answer: B

Rationale: Assessing for signs of impending eclampsia, such as severe headache or visual changes, is critical to prevent seizures.

Correct Answer: C

Rationale: Severe headache and blurred vision may indicate postpartum complications such as preeclampsia.

Correct Answer: A

Rationale: The most important nursing action to undertake at this time is obtaining a fetal heart rate (FHR) assessment. Monitoring the FHR is crucial during labor to assess the well-being of the baby and detect any signs of fetal distress. This information helps guide the healthcare team in determining the appropriate course of action to ensure the safety of both the mother and baby. It takes precedence over other tasks such as completing a sterile vaginal exam, assessing the odor of amniotic fluid, performing Leopold's maneuver, or obtaining pain medication orders. Monitoring the FHR should be the immediate priority in this situation.