CTQ. #4. Myelomeningocele is a protrusion of a sac of portions of spinal meninges, with spinal nerves and cerebrospinal fluid through a discontinuity in the lumbar region of the vertebral column of a fetus /baby.This is a very serious type of spina bifida and develops because some of the lumbar vertebrae fail to develop normally and close the vertebral canal.
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A complication of myelomeningocele is hydrocephalus-- an abnormally large amount of cerebrospinal fluid in the head of the baby. This often causes displacement of the baby's from position it usually assumes before delivery; this, and the problems associated with the vaginal delivery of a baby with an abnormally large head would favor a C-section delivery.