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Zorluk: OrtaObstetric Complications

A 34-year-old G3P2 at 40 weeks gestation is in the second stage of labor. The fetal head delivers but then tightly retracts against the maternal perineum (turtle sign). Routine gentle downward traction fails to deliver the anterior shoulder. The obstetrician immediately calls for nursing and neonatal assistance and instructs the patient to stop pushing. Arrange the following subsequent management steps in the correct sequential order, starting with the most appropriate initial maneuver and ending with the maneuver of last resort.

  1. 1Instruct the patient to hyperflex her thighs tightly against her abdomen.
  2. 2Apply firm, continuous pressure just above the maternal pubic symphysis.
  3. 3Insert a hand into the vagina to rotate the fetal shoulders to an oblique angle.
  4. 4Grasp the fetal posterior wrist and gently sweep the posterior arm across the chest.
  5. 5Push the fetal head back into the maternal pelvis and prepare for emergent cesarean delivery.

Cevap

The correct sequence for managing shoulder dystocia is: McRoberts maneuver (hyperflexing the maternal thighs), followed by suprapubic pressure, internal rotational maneuvers, delivery of the posterior fetal arm, and finally cephalic replacement (Zavanelli maneuver) as a last resort.
The management of shoulder dystocia follows a standardized algorithm proceeding from the least invasive external maneuvers to increasingly invasive internal maneuvers. The sequence begins with calling for help (already done in this scenario), followed by the McRoberts maneuver (hyperflexion of maternal legs) and suprapubic pressure. If these fail, internal rotational maneuvers (e.g., Woods corkscrew) are attempted. If rotation is unsuccessful, the clinician extracts the posterior arm to reduce the bisacromial diameter. When all vaginal maneuvers fail to deliver the fetus, the last resort is the Zavanelli maneuver (replacing the fetal head into the pelvis to proceed with an emergent cesarean section).

Adım Adım Çözüm

1
Recognize the clinical presentation of shoulder dystocia.
The 'turtle sign' (fetal head retracting against the perineum) and failure of routine downward traction confirm the diagnosis.
Immediate recognition is required to halt maternal pushing, call for help, and initiate specific obstetric maneuvers to prevent fetal hypoxic injury.
2
Select the initial external maneuvers.
The McRoberts maneuver is performed first, typically accompanied by suprapubic pressure.
These maneuvers are prioritized because they are non-invasive, quick to implement, and resolve a large majority of shoulder dystocia cases by maximizing pelvic dimensions and dislodging the impacted shoulder.
3
Identify the appropriate subsequent internal maneuvers if external maneuvers fail.
Internal rotation of the fetal shoulders is attempted next, followed by the delivery of the posterior arm.
These invasive maneuvers physically alter the fetal presentation within the pelvis to relieve the bony impaction, but they carry a higher risk of maternal perineal trauma and fetal clavicular or humerus fractures.
4
Determine the maneuver of last resort.
Cephalic replacement (Zavanelli maneuver) with immediate cesarean delivery is selected.
This is only utilized when all less invasive, definitive methods have failed, due to its significant maternal and fetal morbidity.

Anahtar Kavram

Sequential management algorithm for shoulder dystocia.
Tahmini Süre:1m 30s
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Konular

Obstetric Complications

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