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Zorluk: OrtaLabor, Delivery, and Puerperium

A 27-year-old multiparous patient at 39 weeks gestation has just delivered a 4,150 g (9 lb 2 oz) neonate vaginally. During the delivery of the placenta, the resident applies continuous umbilical cord traction while the uterus is flaccid. The patient suddenly cries out in severe lower abdominal pain, followed by a massive gush of vaginal blood. Her blood pressure is 76/40 mm Hg, and her pulse is 134/min. Physical examination reveals a beefy red, globular mass protruding through the vaginal introitus. The uterine fundus is not palpable on transabdominal examination. An initial attempt to manually push the mass back into the pelvis is unsuccessful because the lower uterine segment and cervix are firmly contracted around the prolapsed tissue. Arrange the following steps in the most appropriate sequential order to manage this patient's condition.

  1. 1Discontinue any ongoing uterotonic agents and begin aggressive intravenous fluid resuscitation.
  2. 2Administer a rapid-acting uterine relaxant (e.g., intravenous nitroglycerin).
  3. 3Manually replace the inverted uterus into its normal anatomic position within the pelvis.
  4. 4Administer high-dose uterotonics and initiate continuous bimanual massage.

Cevap

The correct sequence involves stopping uterotonics and resuscitating, administering a uterine relaxant, manually replacing the uterus, and finally administering uterotonics to maintain uterine tone.
Uterine inversion is a life-threatening obstetric emergency characterized by the collapse of the uterine fundus into the uterine cavity or through the cervix, often presenting with severe hemorrhage, pain, and shock. The presentation of a beefy red vaginal mass and absent palpable fundus after excessive cord traction is classic. Management must follow a strict algorithm. First, maternal resuscitation with fluids is initiated while simultaneously discontinuing any uterotonics (e.g., oxytocin), as these agents contract the lower uterine segment and cervix, thereby trapping the inverted fundus. If initial manual replacement fails due to a contracted cervical ring, a uterine relaxant (such as nitroglycerin, terbutaline, or general anesthetics) must be administered. Once relaxed, the physician manually replaces the fundus. Only after the uterus is fully restored to its normal anatomic position should uterotonics (e.g., oxytocin infusion, misoprostol) be administered to ensure the uterus clamps down, which prevents reinversion and controls bleeding.

Adım Adım Çözüm

1
Discontinue any ongoing uterotonic agents and begin aggressive intravenous fluid resuscitation.
Prevents further tightening of the cervical ring and treats hypovolemic shock.
Uterotonics worsen the constriction ring around the inverted uterus, and the patient is hypotensive due to acute hemorrhage.
2
Administer a rapid-acting uterine relaxant (e.g., intravenous nitroglycerin).
Relaxes the uterus and the constricted cervical ring.
Initial manual replacement failed; a relaxant is required to soften the cervical ring to permit the passage of the inverted fundus.
3
Manually replace the inverted uterus into its normal anatomic position within the pelvis.
Restores normal pelvic anatomy and stops the primary cause of hemorrhage.
The anatomical distortion must be corrected to stop bleeding, which is now possible due to the administered uterine relaxant.
4
Administer high-dose uterotonics and initiate continuous bimanual massage.
The uterus becomes firm and well-contracted.
A well-contracted uterus prevents the fundus from reinverting and mechanically compresses the bleeding myometrial vessels.

Anahtar Kavram

The sequential management of a uterine inversion involves maternal resuscitation with discontinuation of uterotonics, administration of uterine relaxants if initial manual replacement fails, manual replacement of the uterus, and finally administration of uterotonics to prevent recurrence.
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Labor, Delivery, and Puerperium

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