Spina Bifida!!

                                                                                                                            

Spina bifida,literally means “split” or “open” spine,  is a developmental birth defect which is due to the incomplete closure of the embryonic neural tube. Some of vertebrate overlying the spinal cord are not fully formed and remain unfused and open. If this opening is large then this allows a portion of the spinal cord to protrude through the opening in the bones. There are many cases reported in Nepal.

Types of Spina Bifida

The causes of spina bifida are largely unknown. Some evidence suggests that genes may play a role, but in most cases there is no familial connection. A high fever during pregnancy may increase a woman's chances of having a baby with spina bifida. Women with epilepsy who have taken the drug valproic acid to control seizures may have an increased risk of having a baby with spina bifida.

The two forms of spina bifida are spina bifida occulta and spina bifida manifesta.

Spina bifida occulta is the mildest form of spina bifida (occulta means hidden). Most children with this type of defect never have any health problems, and the spinal cord is often unaffected.

Spina bifida manifesta includes two types of spina bifida:

1.            Meningocele involves the meninges, the membranes responsible for covering and protecting the brain and spinal cord. If the meninges push through the hole in the vertebrae (the small, ring-like bones that make up the spinal column), the sac is called a meningocele.

2.            Myelomeningocele is the most severe form of spina bifida. It occurs when the meninges push through the hole in the back, and the spinal cord also pushes though. Most babies who are born with this type of spina bifida also havehydrocephalus, an accumulation of fluid in and around the brain.

3.           

Because of the abnormal development of and damage to the spinal cord, a child with myelomeningocele typically has some paralysis. The degree of paralysis largely depends on where the opening occurs in the spine. The higher the opening is on the back, the more severe the paralysis tends to be.