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Zorluk: OrtaObstetric Complications

A primigravida at 41 weeks of gestation is in the second stage of labor. Following the delivery of the fetal head, it immediately retracts tightly against the maternal perineum. The attending physician attempts gentle downward traction, but the anterior shoulder fails to pass beneath the pubic symphysis. Arrange the following interventions in the correct chronological sequence of escalation for managing this obstetric emergency.

  1. 1Instruct the patient to stop pushing and request multidisciplinary assistance
  2. 2Hyperflex the maternal hips and apply suprapubic pressure
  3. 3Attempt manual delivery of the posterior fetal arm
  4. 4Perform cephalic replacement and proceed to emergency cesarean delivery

Cevap

The correct sequence of management for shoulder dystocia progresses from immediately halting pushing and calling for help, to external positional maneuvers (McRoberts and suprapubic pressure), followed by internal vaginal maneuvers (delivering the posterior arm), and finally culminating in catastrophic interventions like cephalic replacement (Zavanelli maneuver) if all else fails.
The algorithm for shoulder dystocia is strictly sequential to minimize fetal and maternal morbidity. It begins with immediate recognition and halting of pushing (which worsens impaction), followed by external positional changes (McRoberts maneuver) and suprapubic pressure. If these fail, the physician must move to internal maneuvers, such as delivering the posterior arm or performing rotational maneuvers (Woods corkscrew, Rubin). Only when all vaginal delivery options have failed is the Zavanelli maneuver (cephalic replacement followed by cesarean delivery) indicated as a last resort.

Adım Adım Çözüm

1
Recognize the turtle sign and immediately call for help while instructing the mother to stop pushing.
Prevents further impaction of the anterior shoulder and ensures adequate personnel are present.
Pushing against an impacted shoulder stretches the brachial plexus and worsens the dystocia.
2
Perform the McRoberts maneuver simultaneously with suprapubic pressure.
Rotates the maternal symphysis pubis superiorly and attempts to push the fetal shoulder obliquely.
These are the most successful and least invasive first-line maneuvers to relieve the obstruction.
3
Perform internal maneuvers, such as delivery of the posterior arm or Woods corkscrew maneuver.
Reduces the biacromial diameter of the fetus by 2 to 3 centimeters, allowing the anterior shoulder to slide under the symphysis.
Required when external manipulation fails to alter the pelvic geometry enough to permit delivery.
4
Execute the Zavanelli maneuver (cephalic replacement).
Returns the fetus to the uterine cavity, allowing for an emergency cesarean delivery.
This is a salvage procedure of last resort associated with high morbidity, used only when all other methods have failed to prevent fetal asphyxia.

Anahtar Kavram

The sequential management of shoulder dystocia emphasizes progressing from the least invasive external maneuvers to internal manipulations, reserving highly morbid interventions for refractory cases.
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Obstetric Complications

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