When it comes to OB nursing, there are a few high-stakes emergencies that every nurse and nursing student MUST know like the back of their hand. Four of the biggest?
👉 Placenta Previa 👉 Abruptio Placentae 👉 Preterm Labor 👉 Prolapsed Cord
These aren’t just textbook topics—they’re real-life situations that require quick thinking, sharp assessment skills, and immediate interventions to keep both mom and baby safe.
If you’re getting ready for the NCLEX, a clinical rotation, or just want to solidify your knowledge, grab a snack and let’s break these down with simple explanations, key differences, and the must-know nursing actions.
Placenta Previa: When the Placenta Is in the Wrong Spot
What Is It?
Placenta previa happens when the placenta implants too low in the uterus, partially or completely covering the cervix (the opening to the birth canal).
Types of Placenta Previa:
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Complete (Total) – Cervix is fully covered.
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Partial – Cervix is partially covered.
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Marginal (Low-Lying) – Placenta is near the cervix but not covering it.
Signs and Symptoms:
🚨 PAINLESS bright red vaginal bleeding in the second or third trimester. No abdominal pain. No contractions. Just unexpected bleeding.
Nursing Interventions:
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NO vaginal exams! (Risk of causing more bleeding.)
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Monitor fetal heart rate.
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Prepare for possible C-section.
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Bed rest if bleeding is minimal.
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Administer IV fluids and blood products if necessary.
✅ NCLEX tip: Think “P” for Placenta Previa = Painless bleeding
⭐️ Abruptio Placentae: When the Placenta Separates Too Soon
What Is It?
Abruptio placentae (also called placental abruption) is the premature separation of the placenta from the uterine wall before delivery. This is a true OB emergency.
Risk Factors:
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High blood pressure
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Trauma (car accident, fall, etc.)
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Smoking or drug use (especially cocaine)
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Previous abruption
Signs and Symptoms:
🚨 PAINFUL dark red vaginal bleeding. 🚨 Rigid, board-like abdomen. 🚨 Uterine tenderness. 🚨 Possible decreased fetal movement and distress.
Nursing Interventions:
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Immediate fetal monitoring.
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Administer IV fluids and oxygen.
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Prepare for an emergency C-section.
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Monitor for signs of shock (low BP, high HR).
✅ NCLEX tip: Think “A” for Abruptio = Abdominal pain and Abruption
⭐️ Preterm Labor: When Baby Tries to Arrive Too Early
What Is It?
Preterm labor is when regular contractions begin before 37 weeks of pregnancy, leading to changes in the cervix (dilation and effacement).
Risk Factors:
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Infection (especially UTI or vaginal infections)
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Multiple pregnancies (twins, triplets)
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History of preterm birth
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Smoking or substance use
Signs and Symptoms:
🚨 Regular contractions (every 10 minutes or less). 🚨 Pelvic pressure. 🚨 Low back pain. 🚨 Vaginal discharge or bleeding.
Nursing Interventions:
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Hydrate the patient (sometimes dehydration triggers contractions).
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Administer tocolytics (like magnesium sulfate) to stop contractions.
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Give steroids (like betamethasone) to help mature the baby’s lungs.
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Monitor fetal heart rate and contractions.
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Bed rest and pelvic rest (no sex, no cervical exams).
✅ NCLEX tip: Preterm labor = Stop the contractions and protect the baby’s lungs!
⭐️ Prolapsed Cord: When the Cord Comes Out Before the Baby
What Is It?
A prolapsed umbilical cord happens when the cord slips through the cervix into the vagina before the baby during delivery. This is dangerous because the cord can become compressed, cutting off oxygen to the baby.
Risk Factors:
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Premature rupture of membranes.
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High fetal station.
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Small baby.
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Breech position.
Signs and Symptoms:
🚨 Cord visible or felt during a vaginal exam. 🚨 Sudden, severe variable decelerations on the fetal monitor. 🚨 Mom might say, “I feel something coming out!”
Nursing Interventions:
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Immediately lift the presenting part off the cord (with a sterile gloved hand).
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Place mom in knee-chest position or Trendelenburg to reduce pressure on the cord.
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Administer oxygen.
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Prepare for an emergency C-section.
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Keep the cord moist and warm if protruding.
✅ NCLEX tip: Prolapsed cord = Lift the baby’s head, position mom, and prep for delivery FAST.
Final Thoughts
These four conditions are NCLEX favorites and critical knowledge for real-life nursing practice. Always remember to assess your patient, monitor fetal heart tones, and know when to call for help.
When in doubt, think: ❤️ Keep the baby oxygenated. ❤️ Keep mom stable. ❤️ Act FAST in emergencies.
Want More NCLEX Help?
Download our Free Top 10 NCLEX Mistakes You Must Avoid or check out our NCLEX Success Mastery Course for more must-know tips on high-risk pregnancy, labor, and delivery!
And hey—if this post helped you, share it with a classmate! We’re all in this together. 💜