The nurse is preparing for the admission of a 30 weeks' gestation patient experiencing vaginal bleeding with a suspected diagnosis of placenta previa. In anticipating the patient's needs, which of the following would be most appropriate for the nurse to include? Select all that apply.

A. Correct coagulation failure by giving platelets. Anaphylactoid syndrome of pregnancy (amniotic fluid embolism) can cause disseminated intravascular coagulation (DIC), but correcting coagulation abnormalities is not the immediate priority. The first intervention should focus on oxygenation and stabilizing the cardiovascular system.

B. Provide emotional support to the woman and her family. While emotional support is important, this is not the priority in a life-threatening emergency. The focus should be on immediate resuscitation efforts to prevent maternal and fetal death.

C. Maintain cardiac output and assess intake & output. Maintaining cardiac output is critical, but this is secondary to oxygenation. The initial response should be administering high-flow oxygen to improve maternal and fetal oxygenation before managing hemodynamic stability.

D. Administer oxygen by tight face mask 8-10L/min. Amniotic fluid embolism causes sudden respiratory distress, hypoxia, and cardiovascular collapse. Immediate high-flow oxygen delivery is the first and most critical intervention to improve oxygenation, support cardiac function, and prevent further complications.

A. Internal fetal monitoring. Internal fetal monitoring is contraindicated when placenta previa is suspected because it involves inserting a catheter or electrode into the uterus, which can increase the risk of hemorrhage if the placenta is covering the cervix.

B. Amniocentesis for fetal lung maturity. While fetal lung maturity assessment may be relevant if early delivery is being considered, it is not an immediate diagnostic procedure for evaluating the cause of vaginal bleeding. The priority is to determine placenta location and rule out placenta previa.

C. Contraction stress test. A contraction stress test evaluates fetal response to contractions but is not the appropriate initial diagnostic test in a patient with vaginal bleeding. Stimulating contractions could worsen bleeding if placenta previa or another placental abnormality is present.

D. Ultrasound for placenta location. The first-line diagnostic test for painless, bright red vaginal bleeding in the third trimester is an ultrasound. It helps determine whether the bleeding is due to placenta previa, a condition where the placenta partially or completely covers the cervix, which requires careful management to prevent complications.