Compare conditions

Put any two — or three — conditions side by side, adult or pediatric, to spot the look-alike differences fast, row by row.

Shoulder Dystocia

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In one line

·Birth emergency — baby's head comes out, but the front shoulder gets stuck behind the mother's pubic bone.

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Normal physiology

·In a normal vaginal birth, after the baby's head comes out, the front shoulder (called the anterior shoulder) slides underneath the mother's pubic bone — the hard, curved bone at the front of the pelvis — and then the back shoulder (posterior shoulder) follows, letting the rest of the body be born smoothly.

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What goes wrong

·In shoulder dystocia, the front shoulder gets wedged behind the mother's pubic bone instead of sliding under it. The baby's head is out, but the shoulder is too wide or in the wrong position to fit through the space, so it jams against the bone like a box stuck in a doorway. The umbilical cord is now squeezed between the baby's body and the mother's pelvis, cutting off oxygen, and time becomes critical.

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Hallmark signs

·The baby's head comes out but the shoulders stay stuck inside
·Turtle sign — the baby's head pops out then pulls back tight against the mother's body
·The usual gentle downward pull on the baby's head does not bring the shoulders out
·The delivery stops after the head is born — the body does not follow within about one minute
·The care team activates the shoulder-dystocia emergency protocol and calls for extra help
·The baby may have a slower heart rate or poor color after birth
·The mother's perineum may tear more than usual
·After delivery, the baby's arm on the stuck-shoulder side may hang limp

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Red flags · escalate now

·The baby is not breathing well or has a very slow heart rate after the body is finally delivered — this means oxygen was cut off too long and the baby needs immediate resuscitation.
·One of the baby's arms is completely limp or the hand stays curled and won't open — this suggests the nerves to that arm were injured during delivery.
·The mother has heavy bleeding that does not slow down after the placenta is out — the extra maneuvers and tissue tears can damage blood vessels or prevent the uterus from clamping down properly.
·The baby's collarbone feels or looks crooked, or the baby cries and won't move that arm — the clavicle (collarbone) may have broken during the maneuvers to free the shoulder.
·The mother reports sudden, severe pain in her pelvis or hip during or right after delivery — rarely, the pubic bone can separate or a pelvic joint can be injured by the forces used to deliver the baby.

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Workup

·Cord arterial blood gas at delivery (umbilical artery pH and base excess)
·Apgar score at 1 and 5 minutes
·Brachial plexus exam — check baby's arm movement, grasp reflex, and Moro reflex (startle reflex)
·Clavicle (collarbone) exam and X-ray if arm movement is abnormal or a crackling feel or sound (crepitus) (crackling) is felt
·Estimated fetal weight by ultrasound before delivery (if available)
·Maternal glucose control review (HbA1c or glucose logs) if diabetes is present

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Treatment

·Call for help immediately — obstetrics attending, pediatrics or neonatology, anesthesia, and extra nurses
·McRoberts maneuver — flex the mother's hips and pull her knees up toward her chest as far as they will go
·Suprapubic pressure — push firmly above the mother's pubic bone (not on the belly) toward her spine, in a downward and lateral direction
·Deliver the posterior (back) arm — reach inside the birth canal, find the baby's back arm, sweep it across the chest, and pull it out
·Rubin or Woods screw maneuver — reach inside and push on the baby's shoulder or back to rotate the baby's body 180 degrees, like unscrewing a jar
·Gaskin maneuver — help the mother roll onto her hands and knees (all-fours position)
·Last-resort maneuvers if all else fails — intentional clavicle fracture, Zavanelli maneuver (push the head back in and do emergency cesarean), or symphysiotomy (cut the pubic bone)

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NCLEX trap

·Pulling harder crushes the brachial plexus (the bundle of nerves running from the neck down into the arm) and does not move the shoulder that is wedged behind the mother's pubic bone. Instead, use position changes like McRoberts (pull the mother's knees up toward her chest to tilt the pelvis and give the shoulder room) and suprapubic pressure (push down just above the pubic bone to nudge the stuck shoulder free).
·Pushing down on the uterus (the womb) drives the baby's shoulder even deeper behind the pubic bone, making the jam worse. Instead, push just ABOVE the pubic bone (suprapubic pressure) to push the front shoulder downward and free it from the bone.
·After the head is out, the umbilical cord (the baby's oxygen lifeline) is compressed between the baby's body and the birth canal — the baby is suffocating. If standard moves (McRoberts, suprapubic pressure, rotation) do not free the shoulder within about 1 minute, call for emergency cesarean section or advanced maneuvers (like the Zavanelli, pushing the head back in to buy time for surgery). Every extra minute without oxygen kills brain cells.
·Shoulder dystocia is a true emergency. The baby's anterior shoulder (the one facing the mother's belly) is stuck behind the pubic bone. While stuck, the umbilical cord is squeezed flat, cutting off oxygen. Without rescue maneuvers, the baby will die or suffer permanent brain damage from low oxygen (hypoxia) (not enough oxygen reaching the brain) within minutes.
·Shoulder dystocia is a mechanical blockage — the baby's shoulder is physically wedged under the pubic bone, like a key stuck sideways in a lock. More pushing will not unstick it and wastes precious seconds. You need to change the angle of the pelvis or rotate the baby to free the shoulder.
·Shoulder dystocia demands immediate special maneuvers. Use the HELPERR sequence: call for Help, Evaluate for episiotomy (a small cut to make room, though it rarely helps), Legs in McRoberts position, suprapubic Pressure, Enter the vagina to Rotate the baby, Remove the posterior arm, and Roll the mother onto all fours if needed. If the shoulder does not free within about 1 minute, prepare for emergency surgery.

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