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Zorluk: ZorObstetric Complications

A 29-year-old woman, gravida 2, para 1, at 40 weeks gestation is in the second stage of labor. She chose not to receive regional anesthesia and is laboring with intermittent nitrous oxide. Following a prolonged second stage, the fetal head delivers but immediately retracts tightly against the maternal perineum. Routine gentle downward traction fails to deliver the anterior shoulder.

Arrange the following steps for managing this obstetric emergency in the correct sequential order, from the initial response to the maneuver of last resort.

  1. 1Announce the emergency, call for specialized assistance, and instruct the patient to stop pushing.
  2. 2Hyperflex the maternal thighs against the abdomen while applying downward suprapubic pressure.
  3. 3Perform internal fetal rotational maneuvers or attempt delivery of the posterior arm.
  4. 4Reposition the patient into an all-fours (hands-and-knees) position.
  5. 5Administer a uterine relaxant, push the fetal head back into the pelvis, and proceed to cesarean delivery.

Cevap

The correct sequence begins with calling for help and stopping maternal pushing, followed by McRoberts maneuver with suprapubic pressure, internal rotational maneuvers or posterior arm delivery, the Gaskin (all-fours) maneuver, and finally cephalic replacement (Zavanelli maneuver) followed by cesarean delivery.
The management of shoulder dystocia follows a strict escalation algorithm designed to systematically relieve impaction while minimizing trauma. The sequence begins with preparation (calling for help, ceasing pushing) to prevent worsening impaction. First-line mechanical interventions are external (McRoberts maneuver and suprapubic pressure) due to their safety and high success rate. If these fail, providers move to internal interventions (rotational maneuvers like the Woods corkscrew or manual delivery of the posterior arm). If internal maneuvers are unsuccessful, maternal repositioning such as the Gaskin maneuver (all-fours) is attempted, which is highly effective and feasible in patients without dense regional anesthesia. Finally, if all vaginal maneuvers fail and severe fetal asphyxia is imminent, heroic measures such as the Zavanelli maneuver (cephalic replacement) are performed to allow for an emergent cesarean delivery.

Adım Adım Çözüm

1
Identify the emergency as shoulder dystocia based on the 'turtle sign' and failure of routine traction.
The standard shoulder dystocia management protocol must be activated immediately.
Shoulder dystocia is an acute obstetric emergency requiring a systematic, algorithmic approach to prevent fetal asphyxia and brachial plexus injury.
2
Order the initial non-invasive interventions.
Calling for help and performing McRoberts maneuver with suprapubic pressure are the initial steps.
McRoberts is the safest, least invasive first-line maneuver and resolves up to 90% of cases when combined with suprapubic pressure.
3
Sequence the secondary and tertiary maneuvers for refractory cases.
Internal maneuvers follow failed external maneuvers. If internal maneuvers fail, positioning changes (Gaskin) are used, followed by heroic measures (Zavanelli).
Maneuvers escalate from least invasive to most invasive, culminating in heroic surgical rescue if vaginal delivery remains impossible.

Anahtar Kavram

Algorithm for the sequential management of shoulder dystocia
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Konular

Obstetric Complications

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