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🚨 Obstetric Emergencies

Shoulder dystocia, uterine rupture, inversion and amniotic fluid embolism — the four that turn a normal birth into a crisis in seconds.

🚨 Shoulder dystocia

A birth with the shoulder stuck behind the pubic bone, a hand pressing just above that bone marked correct and a hand on the fundus marked with a cross. Below, uterine rupture, inversion and amniotic fluid embolism.
For shoulder dystocia, where you put your hands is the whole question - suprapubic helps, fundal drives the shoulder harder in. Swipe it sideways if it is cut off, or tap to open it full size.

The head delivers, then retracts back against the perineum — the turtle sign. The anterior shoulder is stuck behind the pubic bone.

The clock starts immediately. Cord compression means the baby is not being oxygenated.

1Call for help; note the time
2McRoberts — sharply flex her thighs onto her abdomen
3Suprapubic pressure — just above the pubic bone
4Other maneuvers per provider; consider episiotomy

Never apply FUNDAL pressure. It drives the shoulder harder into the pubic bone and can rupture the uterus. Suprapubic only.

McRoberts works by rotating the pelvis, flattening the sacral promontory and freeing the shoulder. It is simple, non-invasive and resolves most cases.

Risk factors: macrosomia, maternal diabetes, previous dystocia, post-dates, obesity.

Complications: brachial plexus injury (Erb’s palsy), fractured clavicle, and for the mother, hemorrhage and lacerations. Examine the newborn’s arm movement and clavicle after.

🚨 Uterine rupture and inversion

Uterine rupture — the paradox

The classic sign is that the pain suddenly STOPS, along with loss of contractions.

  • Sudden sharp abdominal pain then cessation of contractions
  • Fetal bradycardia or loss of the heart rate
  • Loss of station — the presenting part rises
  • Signs of shock; abdomen may change shape

Pain that suddenly stops during strong labor is not relief. It is rupture until proven otherwise.

Highest risk: previous classical cesarean scar, oxytocin overstimulation, grand multiparity, trauma.

Uterine inversion

The uterus turns inside out, usually from traction on the cord or pressure on a non-contracted fundus.

  • Sudden massive hemorrhage and profound shock, often out of proportion
  • The fundus is not palpable abdominally

Never pull on the umbilical cord to deliver the placenta, and never push on a soft fundus. Those are the two causes.

🚨 Amniotic fluid embolism

Amniotic fluid and fetal cells enter the maternal circulation and trigger a catastrophic reaction.

Rare, unpredictable, and one of the leading causes of maternal death.

1Sudden dyspnea and hypoxia
2Hypotension, cardiovascular collapse
3DIC — bleeding from everywhere

Care is entirely supportive and immediate: oxygen, intubation, CPR if needed, massive transfusion, blood products for DIC, and emergency delivery.

There is no way to prevent or predict this one. Recognition and speed are everything.

🎯 NCLEX traps

  • Turtle sign → McRoberts + suprapubic. Never fundal pressure
  • Pain stops = uterine rupture
  • Never pull the cord — inversion
  • Sudden dyspnea + collapse + DIC = amniotic fluid embolism
  • Maternal diabetes is the classic dystocia risk factor
Sources. Written from NICHD, CDC Reproductive Health, MedlinePlus and OpenStax A&P 2e (CC BY 4.0).