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Zorluk: KolayObstetric Complications

A 24-year-old primigravida at 38 weeks and 4 days gestation is admitted to the labor and delivery unit in active labor. Her cervical dilation is 6 cm. She requests and receives epidural analgesia for pain relief. Fifteen minutes later, the patient reports feeling lightheaded. Her blood pressure is 85/45 mm Hg and heart rate is 110/min. Physical examination reveals mild bilateral lower extremity edema. Continuous fetal heart rate monitoring demonstrates a baseline of 145/min, minimal variability, and recurrent gradual decreases in the fetal heart rate that begin after the peak of each uterine contraction and return to baseline after the contraction ends. Which of the following is the most appropriate next step in management?

  1. Reposition the patient to the left lateral decubitus position and administer an intravenous fluid bolusCevap
  2. B
    Proceed immediately to a cesarean delivery
  3. C
    Perform a transcervical amnioinfusion
  4. D
    Continue routine monitoring as this reflects normal physiologic fetal head compression
  5. E
    Administer intravenous furosemide to mobilize the lower extremity edema

Cevap

Reposition the patient to the left lateral decubitus position and administer an intravenous fluid bolus.
The patient is experiencing maternal hypotension secondary to sympathetic blockade from the recent epidural analgesia. This hypotension reduces blood flow to the intervillous space, causing uteroplacental insufficiency and fetal hypoxia, which is reflected on the fetal monitor as late decelerations (decelerations that nadir after the peak of the contraction). The most appropriate initial step in management is intrauterine resuscitation to restore uterine perfusion. This includes placing the patient in the left lateral decubitus position (to relieve compression of the inferior vena cava by the gravid uterus and increase venous return) and administering an intravenous fluid bolus (to expand intravascular volume). If these measures fail, intravenous vasopressors (such as ephedrine or phenylephrine) are indicated.

Adım Adım Çözüm

1
Evaluate the maternal vital signs and clinical presentation.
The patient has acute hypotension (blood pressure 85/45 mm Hg) shortly after receiving epidural analgesia.
Epidural anesthesia frequently causes sympathetic blockade, leading to maternal vasodilation and subsequent hypotension.
2
Interpret the fetal heart rate (FHR) tracing in the context of maternal status.
The FHR shows late decelerations, characterized by a gradual decrease in heart rate that begins after the peak of the contraction.
Maternal hypotension decreases blood flow to the placenta, causing uteroplacental insufficiency and fetal hypoxia, which manifests as late decelerations.
3
Determine the most appropriate initial management step.
The best initial step is to perform intrauterine resuscitation by maximizing maternal cardiac output and uterine blood flow.
Left lateral repositioning relieves aortocaval compression, and an intravenous fluid bolus expands intravascular volume, both of which will correct the epidural-induced hypotension and resolve the late decelerations.

Anahtar Kavram

Late decelerations are typically caused by uteroplacental insufficiency. When secondary to epidural-induced maternal hypotension, the first-line treatment is intrauterine resuscitation (e.g., left lateral repositioning, IV fluid bolus, and potentially vasopressors) before considering operative delivery.
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Obstetric Complications

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