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Difficulty: EasyObstetric Complications

A 2424-year-old woman is evaluated in the recovery room thirty minutes after giving birth to a 4.24.2 kg (99 lb 44 oz) male newborn. The vaginal delivery was assisted by vacuum extraction due to maternal exhaustion after a prolonged second stage of labor. The placenta delivered spontaneously and appeared grossly intact. The nurse alerts the physician because the patient's perineal pad is completely saturated with bright red blood, and blood is actively pooling on the bedsheets. The patient reports feeling lightheaded. Her temperature is 37.1∘37.1^\circ C (98.8∘98.8^\circ F), blood pressure is 85/5085/50 mm Hg, and pulse is 122122/min. On abdominal examination, the uterus is palpated above the umbilicus and has a soft, doughy consistency. Speculum examination reveals active bleeding from the cervical os with no apparent vaginal or cervical lacerations. Which of the following is the most appropriate initial step in the management of this patient?

  1. Fundal massage and administration of oxytocinAnswer
  2. B
    Pelvic ultrasonography to evaluate for retained placental tissue
  3. C
    Surgical placement of a uterine compression suture
  4. D
    Reassurance and continued routine monitoring of vital signs
  5. E
    Infusion of fresh frozen plasma and cryoprecipitate

Answer

The most appropriate initial step is fundal massage and administration of oxytocin to treat uterine atony.
The patient presents with classic signs of primary postpartum hemorrhage caused by uterine atony. Atony occurs when the myometrium fails to contract effectively after placental delivery, preventing the compression of torn spiral arteries. This is clinically identified by a soft, enlarged, 'boggy' uterus on palpation. Her risk factors include a large infant (4.24.2 kg) and a prolonged second stage of labor. The absolute first-line management is bimanual fundal massage to mechanically stimulate contractions, alongside the administration of a uterotonic agent (such as oxytocin) to medically induce sustained uterine contraction.

Step-by-Step Solution

1
Evaluate the patient's vital signs and physical examination findings.
The patient is hemodynamically unstable (hypotension, tachycardia) with active heavy bleeding and a soft, 'doughy' (boggy) uterus palpated above the umbilicus.
These findings are classic for uterine atony, which is the failure of the uterus to contract properly after delivery.
2
Assess the patient's risk factors based on the clinical history.
The patient had a prolonged second stage of labor, an operative vaginal delivery, and fetal macrosomia (4.24.2 kg newborn).
Uterine overdistention (macrosomia) and prolonged labor cause muscle fatigue, making uterine atony highly likely.
3
Determine the most appropriate immediate intervention for the suspected diagnosis.
Bimanual fundal massage and the administration of uterotonic agents (such as oxytocin) should be initiated immediately.
Mechanical and pharmacological stimulation is the required first-line treatment to restore uterine tone and arrest the hemorrhage.

Key Concept

Uterine atony is the leading cause of primary postpartum hemorrhage; initial management requires immediate mechanical stimulation with fundal massage and pharmacological therapy with uterotonics.
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Topics

Obstetric Complications

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