Review Note

Last Update: 03/27/2025 09:33 PM

Current Deck: ACG Part 2::Obstetrics

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SS_OB 1.34 Discuss the anaesthetic management of problems that may arise with labour and delivery, including the following situations:
- COrd prolapse 
Cord prolapse
  • Defined as the descent of the umbilical cord through the cervix alongside (occult) or past the presenting part (overt) in the presence of ruptured membranes.
  • Cord presentation presence of the umbilical cord between fetal presenting part and cervix, with or without membrane rupture.
  • Incidence 0.1-0.6%.
Risk factors
General
  • Multiparity
  • Low birth weight (<2.5kg)
  • Prematurity (<37/40)
  • Fetal congenital anomalies
  • Breech presentation
  • Transverse, oblique and unstable lie
  • Second twin
  • Polyhydramnios
  • Low-lying placenta, other abnormal placentation.
Procedure related
  • Artificial rupture of membranes
  • Vaginal manipulation of fetus with ruptured membranes
  • ECV.
Clinical features
  • Should be suspected when there is an abnormal fetal HR pattern (bradycardia, variable decelerations), particularly if such changes commence soon after membrane rupture, spontaneously or with amniotomy.
Obstetric management
  • Call for assistance
  • Immediate delivery in theatre by LSCS to prevent hypoxia-acidosis (Cat 1).
  • Minimal handling of loops of cord lying outside vagina to prevent vasospasm.
  • Presenting part should be elevated manually, mother adopting knee-chest position or head-down tilt to prevent cord compression.
Anaesthetic management
  • Cat 1 LSCS for suspicious or pathological fetal HR but without unduly risking maternal safety.
  • Cat 2 LSCS for women in whom fetal HR is normal.
  • Prepare for quick onset of anaesthesia GA vs neuraxial depending on if the cord is decompressed and whether the fetus is compromised.
  • Practitioner competent in resus of newborn should attend all deliveries with cord prolapse.
ROCG Umbilical cord prolapse.

GC