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Zorluk: Çok zorObstetric Complications

A 29-year-old primigravida at 32 weeks gestation is admitted to the labor and delivery unit for the management of preeclampsia with severe features. Her admission blood pressure was 172/112172/112 mmHg. She was immediately started on an intravenous magnesium sulfate infusion for seizure prophylaxis and received a dose of intravenous hydralazine. Three hours later, she complains of sudden-onset, severe shortness of breath and a cough producing pink, frothy sputum. Her temperature is 37.0∘C37.0^{\circ}\text{C} (98.6∘F98.6^{\circ}\text{F}), blood pressure is 165/105165/105 mmHg, pulse is 122122/min, and respirations are 2828/min. Pulse oximetry shows 87%87\% on room air. Physical examination reveals bibasilar crackles extending to the mid-lung fields. Deep tendon reflexes are 2+ bilaterally. The fetal heart rate tracing shows a baseline of 140140/min with moderate variability and no decelerations. Which of the following is the most appropriate next step in the management of this patient's acute respiratory symptoms?

  1. Administration of intravenous furosemideCevap
  2. B
    Administration of intravenous calcium gluconate
  3. C
    Administration of an intravenous fluid bolus
  4. D
    Administration of intravenous labetalol
  5. E
    Immediate cesarean delivery

Cevap

Administration of intravenous furosemide
This patient has developed acute pulmonary edema, a life-threatening complication of severe preeclampsia. This diagnosis is evidenced by her severe dyspnea, hypoxia, pink frothy sputum, tachycardia, tachypnea, and bibasilar crackles. The pathophysiology involves a combination of significantly increased systemic vascular resistance (increased afterload), decreased plasma oncotic pressure, and endothelial damage leading to capillary leak. The definitive initial management for acute cardiogenic pulmonary edema in this setting is rapid preload reduction via loop diuretics (intravenous furosemide), along with supplemental oxygen and fluid restriction. While diuretics are generally used with extreme caution in pregnancy due to the risk of worsening placental hypoperfusion, acute maternal pulmonary edema is an absolute indication for their use to prevent maternal death.

Adım Adım Çözüm

1
Evaluate the clinical presentation to identify the etiology of the patient's respiratory distress.
The patient has severe dyspnea, hypoxia, pink frothy sputum, tachypnea, and bibasilar crackles, which are classic signs of acute pulmonary edema.
Identifying the specific respiratory complication is required to select the correct intervention. Preeclampsia increases afterload and endothelial permeability, risking acute pulmonary edema.
2
Differentiate acute pulmonary edema from magnesium sulfate toxicity.
The patient has tachypnea (respirations 28/min) and normal deep tendon reflexes (2+). Magnesium toxicity causes bradypnea (respirations < 12/min) and absent deep tendon reflexes.
It is critical to distinguish between these two life-threatening complications as their treatments are completely different (diuretics vs. calcium gluconate).
3
Determine the most appropriate immediate pharmacologic intervention.
Intravenous furosemide is indicated.
Acute pulmonary edema requires immediate preload reduction. While loop diuretics are typically avoided in normal pregnancies, acute pulmonary edema is an absolute indication for their use to prevent maternal mortality.
4
Evaluate fetal status to determine if emergent delivery is indicated before maternal stabilization.
The fetal heart rate tracing is Category I (normal baseline, moderate variability, no decelerations).
Because the fetus is stable, the absolute priority is resuscitating and stabilizing the mother. Administering anesthesia for a cesarean section to a hypoxic, hemodynamically decompensating mother carries extremely high mortality.

Anahtar Kavram

Acute pulmonary edema is a severe complication of preeclampsia requiring immediate preload reduction with intravenous loop diuretics (furosemide), overriding the general hesitation to use diuretics during pregnancy. Maternal stabilization must always precede delivery when the fetal status is reassuring.
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Obstetric Complications

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