Shoulder dystocia

Shoulder Dystocia

Shoulder dystocia is a critical and emergency obstetric condition that occurs when the baby's anterior shoulder gets stuck behind the mother's symphysis pubis during childbirth. This complication requires immediate and skilled intervention to safely deliver the baby without causing harm to the mother or the infant.

Illustration depicting the management of shoulder dystocia during childbirth.

Risk Factors

Several factors can increase the risk of shoulder dystocia, including: - Maternal diabetes - Obesity in the mother - History of shoulder dystocia in previous deliveries - Post-term pregnancy - Excessive weight gain during pregnancy - Large fetal size (macrosomia)

Signs

The hallmark sign of shoulder dystocia during delivery is the failure of the shoulders to deliver shortly after the fetal head, leading to a sudden halt in delivery progress. This situation is often recognized by the "turtle sign," where the baby's head retracts against the mother’s perineum after the initial emergence.

Management

Management of shoulder dystocia requires prompt and effective interventions to minimize the risk of injury to both the mother and the baby. Common maneuvers include: - McRoberts Maneuver: Flexing the mother’s thighs onto her abdomen to widen the pelvis. - Suprapubic Pressure: Applying pressure above the pubic bone to help dislodge the baby’s shoulder. - Delivery of the Posterior Arm: Reaching into the vagina to rotate and deliver the baby's posterior arm. - Episiotomy: Making a surgical cut in the perineum to enlarge the vaginal opening.

Healthcare providers may need to use a combination of these maneuvers to resolve the situation.

Complications

Shoulder dystocia can lead to several complications if not managed promptly, including: - Brachial plexus injury, leading to temporary or permanent arm weakness or paralysis in the newborn. - Fractures of the clavicle or humerus in the newborn. - Hypoxia or brain damage due to prolonged delivery. - Hemorrhage or significant tearing in the mother.

Prevention

Preventive measures for shoulder dystocia are limited due to its unpredictable nature but may include: - Careful monitoring of maternal and fetal risk factors during pregnancy. - Consideration of elective cesarean delivery for known risk factors such as fetal macrosomia or a history of shoulder dystocia. - Preparing for the possibility of shoulder dystocia in high-risk deliveries by having an experienced team available.

External Links

• American College of Obstetricians and Gynecologists - Shoulder Dystocia
• Royal College of Obstetricians and Gynaecologists - Shoulder Dystocia

References

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