Table Of Contents

Obstructed Labor

Obstructed labour refers to failure of descent of the presenting part despite strong uterine contractions, often due to mechanical obstruction. It is a life-threatening obstetric emergency that can lead to uterine rupture, fetal death and maternal complications suchs as fistula, hemorrhage and sepsis.

Diagnosis of obstructed labour

ComponentFeatures
Prolonged labour> 12 – 24 hours with strong, frequent contraction, no progress in cervical dilation or fetal descent
Evidence of obstructionCaput, moulding, asynclytism, persistent occiput posterior, brow or shoulder presentation, pelvic deformity or fetal macrosomia
Clinical signs of complicationsBandl’s ring, maternal exhuastion and dehydration, fetal distress
  • Causes of obstructed labor
    • Cephalopelvic disproportion (> 65%)
    • Malpresentation (e.g. breech, shoulder, brow and face)
    • Transverse lie
    • Hydrocephalus
    • Locked twins
    • Pelvic tumor (e.g. fibroid, ovarian cyst)
    • Stenosis of the vagina
    • 3 delays
      • Delayed decision to seek care
      • Delayed transfer to health facility
      • Delayed access to adequate care
  • Patient history
    • Prolonged labour (> 12 – 18 hours)
    • Prolonged rupture of membranes
    • Failure of descent despite good contractions
  • Signs and symptoms of obstructed labor
    • Dehydration e.g. sunken eyes, dry mucosa
    • Tachycardia and hypotension
    • Fever
    • Pallor
    • Ketotic breath (due to startvation ketosis)
    • Hypertonc or tender uterus
    • Bandl’s ring (pathological retraction ring due to stretching of the lower segment)
    • Fetal parts easily palpable (due to thinning of the utreus)
    • Fetal bradycardia or tachycardia
    • Severe moulding or caput
    • Dry and hot vagina with foul-smelling discharge
    • Thick, edematous cervix that is partially dilated or not dilating further
    • High station
    • Bloody urine via foley catheter
  • Treatment
    • ABCs
      • IV fluids
      • Oxygen
      • Foley catheter of urine output
    • Caesarean delivery
    • Destructive procedure (craniotomy, decapitation, or eviscaration) if the fetus is not viable and caesarean delivery is not faesible
  • Maternal complications of obstructed labour
    • Uterine rupture
    • Postpartum hemorrhage
    • Puerperal sepsis
    • Vesicovaginal or rectovaginal fistula (VVF and RVF)
    • Pelvic abscess
    • Foot drop (due to lumbosacral nerve compression
    • Maternal death
  • Fetal complications of obstructed labour
    • Stillbirth
    • Hypoxic-ischemic encephalopathy
    • Intracranial hemorrhage
    • Birth trauma
    • Neonatal sepsis
Dr. Jeffrey Kalei
Dr. Jeffrey Kalei

Author and illustrator for Hyperexcision. Interested in emergency room medicine. I have a passion for medical education and drawing.

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