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Shoulder dystocia

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Shoulder dystocia

Shoulder dystocia occurs after vaginal delivery of the head, when the baby's anterior shoulder is obstructed by the mother's pubic bone. It is typically diagnosed when the baby's shoulders fail to deliver despite gentle downward traction on the baby's head, requiring the need of special techniques to safely deliver the baby. Retraction of the baby's head back into the vagina, known as "turtle sign" is suggestive of shoulder dystocia. It is a type of obstructed labour.

Although most instances of shoulder dystocia are relieved without complications to the baby, the most common complications may include brachial plexus injury, or clavicle fracture. Complications for the mother may include increased risk of vaginal or perineal tears, postpartum bleeding, or uterine rupture. Risk factors include gestational diabetes, previous history of the condition, operative vaginal delivery, obesity in the mother, an overly large baby, and epidural anesthesia.

Shoulder dystocia is an obstetric emergency. Initial efforts to release a shoulder typically include: with a woman on her back pushing the legs outward and upward, pushing on the abdomen above the pubic bone. If these are not effective, efforts to manually rotate the baby's shoulders or placing the woman on all fours may be tried. Shoulder dystocia occurs in approximately 0.2% to 3% of vaginal births. Death as a result of shoulder dystocia is very uncommon.

One characteristic of a minority of shoulder dystocia deliveries is the turtle sign, which involves the retraction of the fetal chin back into the vagina after the head is delivered. This occurs when the baby's shoulder is obstructed by the mother's pelvis or is high in the pelvis.

Possible complications include:

Even though there are several known risk factors, shoulder dystocia can happen to anyone and cannot be reliably predicted or stopped from happening. Doctors should know the risk factors to watch for in high-risk deliveries and be ready to handle this complication in any delivery.

Pre- labor risk factors:

During labor risk factors:

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birthing obstruction complication
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