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Physiological AdaptationPAINFUL dark bleeding + rigid uterus

Abruptio PlacentaeNCLEX cheat sheet

Abruptio placentae is premature separation of a normally implanted placenta from the uterine wall after 20 weeks gestation.

23 key facts 3 practice questions Reviewed Oct 2026
The 1-minute sheetCinnaRN

Define

  • Premature placental separation
  • PAINFUL, dark red bleeding

Signs

  • Rigid board-like uterus, tender
  • Concealed bleeding possible
  • Fetal distress, ↓ BP, shock

Risk

  • Cocaine, HTN, trauma, smoking
  • DIC = major complication

Do

  • Large-bore IV, O2, left side
  • Emergent C-section, type & cross
Red flag to remember

A rigid, painful uterus with bleeding is an emergency; notify the provider and prepare for delivery.

Before you read

Test yourself first: 3 questions

Question 1 of 3

A multiparous client in active labor suddenly reports severe, constant abdominal pain. The nurse notes a rigid, board-like uterus and dark vaginal bleeding. Which complication does the nurse suspect?

What is abruptio placentae?

The separation causes bleeding behind the placenta, cutting off fetal oxygen and threatening both mother and fetus. The hallmark is painful, dark-red vaginal bleeding with a rigid, board-like, tender uterus. Common causes include hypertension, cocaine use, abdominal trauma, and prior abruption. Memory aid: Abruption = Painful, rigid abdomen.

Abruptio Placentae illustrated

Placental abruption: the placenta separating from the uterine wall
Placental abruption: the placenta separating from the uterine wall. Illustration: BruceBlaus via Wikimedia Commons, CC BY 3.0.

Key points to remember

  • Bleeding is dark red and painful, though it may be concealed behind the placenta with little visible blood.
  • The uterus is firm, rigid, board-like, and tender, often with increased tone and frequent contractions.
  • Concealed hemorrhage can cause maternal shock that is out of proportion to visible blood loss.
  • Disseminated intravascular coagulation (DIC) may develop as clotting factors are consumed.
  • Fetal heart rate often shows late decelerations, bradycardia, or loss of variability from impaired oxygenation.

Signs & symptoms

  • Rigid board-like uterus, tender
  • Concealed bleeding possible
  • Fetal distress, ↓ BP, shock

Nursing priorities

  1. Assess and continuously monitor fetal heart rate and uterine activity for signs of distress.
  2. Establish large-bore IV access, give fluids, and prepare for blood product replacement.
  3. Monitor maternal vital signs and measure blood loss, watching for shock and DIC.
  4. Position the mother on her left side with oxygen by face mask to improve fetal oxygenation.
  5. Prepare for emergency cesarean birth if the mother or fetus is unstable.

Labs & values

Fibrinogen: normal200-400 mg/dL; falls in DIC
Platelets: normal150,000-400,000/mcL; falls in DIC
Hemoglobin/hematocrit: fall with blood loss (Hgb12-16 g/dL, Hct 36-46%)
200400mg/dL Normal

Patient teaching

  • Seek care immediately for abdominal pain with bleeding or a hard, painful abdomen.
  • Avoid cocaine and tobacco, which strongly increase abruption risk.
  • Manage chronic hypertension and keep all prenatal appointments.

Red flags: report now

  • A rigid, painful uterus with bleeding is an emergency; notify the provider and prepare for delivery.
  • Report signs of shock or bleeding from IV sites, gums, or incisions, which suggest DIC.
  • Report sudden cessation of fetal movement or a non-reassuring fetal heart rate pattern immediately.
  • Never perform a vaginal exam until placenta previa has been ruled out by ultrasound.

References

Clinical references for this topic

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