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Difficulty: MediumObstetric Complications

Immediately following the vaginal delivery of a 3900-g neonate and the placenta, a 26-year-old primiparous patient experiences a sudden, massive gush of vaginal bleeding accompanied by severe lower abdominal pain. The delivering clinician notes that the umbilical cord was subjected to strong traction during the third stage of labor. On physical examination, a smooth, round, beefy-red mass is protruding from the vaginal introitus. The uterine fundus cannot be palpated transabdominally. The patient is pale, with a blood pressure of 78/45 mm Hg and a heart rate of 142/min. Intravenous access is rapidly secured and aggressive fluid resuscitation is begun. Arrange the following subsequent management steps in the most appropriate chronological sequence for this patient's condition.

  1. 1Discontinue all ongoing uterotonic infusions
  2. 2Attempt immediate manual replacement of the uterine fundus
  3. 3Administer uterine relaxing agents such as intravenous nitroglycerin
  4. 4Initiate high-dose uterotonic agents to maintain contraction
  5. 5Proceed to laparotomy for surgical repositioning

Answer

1. Discontinue uterotonics, 2. Attempt manual replacement, 3. Administer uterine relaxants, 4. Initiate high-dose uterotonics, 5. Proceed to laparotomy
The clinical scenario of profound hemorrhage, shock out of proportion to blood loss, an absent palpable abdominal fundus, and a beefy-red vaginal mass following excessive cord traction is classic for acute uterine inversion. The standard management algorithm begins with calling for help, initiating aggressive fluid resuscitation, and immediately halting any uterotonics (like oxytocin). Discontinuing uterotonics is critical to avoid a cervical constriction ring. The clinician must then attempt immediate manual replacement of the uterus by applying upward pressure on the fundus through the vagina. If this initial attempt is blocked by a contracted cervix or lower uterine segment, uterine relaxants (such as intravenous nitroglycerin or terbutaline) are administered to facilitate a second manual attempt. Only AFTER the uterus is successfully restored to its normal anatomical position are uterotonics (e.g., oxytocin, misoprostol, carboprost) aggressively restarted. These agents promote firm uterine tone, halting the hemorrhage and preventing re-inversion. If all conservative and pharmacologic measures fail, laparotomy is performed for surgical repositioning (e.g., Huntington procedure).

Step-by-Step Solution

1
Diagnose acute uterine inversion and stop uterotonics.
Prevents the formation of a rigid cervical constriction ring.
The patient's shock, absent fundus, and vaginal mass indicate uterine inversion. Uterotonics will contract the uterus in its inverted state, making replacement impossible.
2
Attempt manual replacement of the uterus.
Physically pushes the fundus back through the cervix.
This is the most rapid and least invasive definitive treatment and should be attempted before the tissues become overly edematous.
3
Give a uterine relaxant (e.g., nitroglycerin) if manual replacement fails.
Relaxes the cervix and lower uterine segment.
Often, a constriction ring prevents the initial manual replacement. Relaxation is required to allow a subsequent manual attempt to succeed.
4
Administer uterotonics (e.g., oxytocin) after successful replacement.
Induces firm uterine contraction in the correct anatomical position.
A contracted uterus compresses bleeding vessels (treating the hemorrhage) and prevents the fundus from prolapsing and inverting again.
5
Perform laparotomy.
Surgical correction of the inversion.
This is the final salvage procedure reserved strictly for cases refractory to all manual and pharmacologic efforts.

Key Concept

Algorithm for the management of acute uterine inversion
Estimated Time:1m 30s
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Topics

Obstetric Complications

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