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Spina Bifida

Definition

Spina bifida is a type of birth defect. It is a problem with how the spine and spinal cord develop. Spina bifida can begin to develop in a fetus before the mother even knows she is pregnant. In some cases, structures that should be inside the spinal canal can slip out. The structures affected may include:
Spina Bifida
Spinabifida
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There are 3 kinds of spina bifida:

Causes

The cause of spina bifida is not known. There is a strong genetic factor for some with spina bifida.
Many studies have also shown a link between a low folate diet in the mother and birth defects. In particular, low folate diets are associated with an increased risk of spina bifida.

Risk Factors

This condition is more likely in females. Other factors that increase the risk of spina bifida include:

Symptoms

Occulta may not have any symptoms. Some with this type may never know they have spina bifida. There may be a small tuft of hair or skin discoloration over the low back.
The immediate symptoms of meningocele and myelomeningocele include:
Infants and children with meningocele or myelomeningocele spina bifida may also experience long-term symptoms such as:

Diagnosis

Prenatal Testing

A blood test of the mother before birth can predict the risk of spina bifida. If the test predicts a high risk of neural tube defects, then 2 more tests may be done:
  • Amniocentesis—a sample of the fluid surrounding the baby is taken to measure for factors indicating problems of the spine
  • Ultrasound—a test that uses sound waves to look at the fetal spine
A diagnosis before birth can help you and your doctor make plans. Surgery may be needed soon after birth.

After Birth Testing

After birth, meningocele and myelomeningocele are usually found on physical exam. Many tests will be needed to find out which bones and nerves are involved. The kidneys may also be damaged. They will need to be watched closely.
Most children with occulta spina bifida will never be diagnosed. This condition rarely causes any symptoms. It also has few complications. It may be discovered during a routine medical exam. It may also be found following x-rays of the lower back.

Treatment

Occulta spina bifida requires no treatment.
Meningocele spina bifida is treated with surgery. It is done to remove the cyst. This form of spina bifida can be treated.
Treatment for myelomeningocele spina bifida is complicated. It may include surgery to place the nerves and spinal cord back in place, physical therapy for any physical problems, and supportive care for any other complications. Treatments for myelomeningocele may include:

Surgery

During surgery, the nerves, membrane, and spinal cord are put back into place. It will be done within 24-48 hours after birth. In some cases, the surgery may be done before birth.
Surgery is done as early as possible to prevent further nerve damage. It cannot reverse damage that has already occurred.
More serious forms of spina bifida may require more surgeries throughout childhood.

Physical Therapy

Therapists will teach parents how to exercise the infant's legs and feet. Walkers, braces, and crutches will often be needed to let the baby move around.

Ongoing Treatment

Complications of spina bifida can be ongoing and extensive. It will be important for you to work with a team of doctors. It is important for you to get help for your child's physical needs and emotional support for you and your family.

Prevention

To help reduce the chance that your baby will be born with spina bifida:

RESOURCES

March of Dimes http://www.marchofdimes.org

Spina Bifida Association of America http://www.spinabifidaassociation.org

CANADIAN RESOURCES

Sick Kids—The Hospital for Sick Children http://www.sickkids.ca

Spina Bifida and Hydrocephalus Association of Canada http://www.sbhac.ca

References

Aherens K, Yazdy MM, Mitchell AA, Werler MM. Folic acid intake and spina bifida in the era of dietary folic acid fortification. Epidemiology. 2011;22(5):731-737.

Spina bifida. American Academy of Pediatrics Healthy Children website. Available at: http://www.healthychildren.org/English/health-issues/conditions/developmental-disabilities/Pages/Spina-Bifida.aspx. Updated May 28, 2014. Accessed June 3, 2014.

Spina bifida. EBSCO DynaMed website. Available at: http://www.ebscohost.com/dynamed. Updated November 21, 2013. Accessed June 3, 2014.

12/3/2010 DynaMed's Systematic Literature Surveillance http://www.ebscohost.com/dynamed: Shin M, Besser LM, Siffel C, et al. Prevalence of spina bifida among children and adolescents in 10 regions in the United States. Pediatrics. 2010;126(2):274-279.

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