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Zorluk: ZorPharmacologic Interventions

A 32-year-old female, gravida 3, para 3, is evaluated in the labor and delivery unit for severe vaginal bleeding. She has a history of mild persistent asthma, for which she uses an inhaled corticosteroid and as-needed albuterol. Twenty minutes ago, she delivered a 4.1 kg4.1\text{ kg} (9 lb9\text{ lb}) infant vaginally after a prolonged second stage of labor. The placenta was delivered intact. She now has a continuous, brisk flow of vaginal blood. Her temperature is 37.1∘C37.1^\circ\text{C} (98.8∘F98.8^\circ\text{F}), blood pressure is 98/60 mm Hg98/60\text{ mm Hg}, and heart rate is 112/min112/\text{min}. The uterus is soft, boggy, and palpated 2 cm2\text{ cm} above the umbilicus. Intravenous oxytocin is running, and bimanual uterine massage is being performed, but the bleeding persists. Estimated blood loss is approximately 1050 mL1050\text{ mL}.

Which of the following pharmacologic agents are appropriate to administer to this patient to control the hemorrhage? (Select 3)

  1. MethylergonovineCevap
  2. MisoprostolCevap
  3. Tranexamic acidCevap
  4. D
    Carboprost tromethamine
  5. E
    Magnesium sulfate
  6. F
    Desmopressin

Cevap

The appropriate medications are Methylergonovine, Misoprostol, and Tranexamic acid.
The correct combination of agents for this patient includes Misoprostol, Methylergonovine, and Tranexamic acid. Postpartum hemorrhage (PPH) most commonly results from uterine atony, which presents as a soft, 'boggy' uterus. Initial management includes fundal massage and intravenous oxytocin. When these fail, secondary uterotonics are required. Misoprostol (a PGE1 analog) is safe and effective across most patient profiles. Methylergonovine (an ergot alkaloid) effectively causes sustained tetanic uterine contractions and is safe here because the patient is normotensive (it is contraindicated in hypertension). Tranexamic acid, an antifibrinolytic, is highly recommended as an early adjunct in PPH management to prevent clot breakdown and reduce mortality.

Adım Adım Çözüm

1
Diagnose the cause of bleeding.
The patient has primary postpartum hemorrhage due to uterine atony, evidenced by the boggy uterus and brisk bleeding despite oxytocin and bimanual massage.
Identifying the etiology is required to select appropriate targeted therapies.
2
Review the patient's medical history for contraindications.
The patient has a history of mild persistent asthma. Her blood pressure is normal, indicating no hypertensive disorders of pregnancy.
Secondary uterotonics have specific, absolute contraindications that must be recognized to prevent severe iatrogenic complications.
3
Select appropriate pharmacologic agents.
Methylergonovine, Misoprostol, and Tranexamic acid are selected. Carboprost is specifically excluded due to the patient's asthma.
These selected agents safely promote uterine contraction and clot stabilization without triggering bronchospasm.

Anahtar Kavram

In the management of postpartum hemorrhage due to uterine atony, second-line uterotonics must be chosen based on patient comorbidities: carboprost is contraindicated in asthma, and methylergonovine is contraindicated in hypertension.
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