Spina bifida

Overview 

Spina bifida is a type of neural tube defect (NTD) that occurs when the spine and spinal cord don't form properly during early fetal development. It is typically a congenital condition, meaning it is present at birth. The severity can vary from person to person, ranging from mild and hidden cases to severe forms that involve visible sacs protruding through the back.

This condition falls under neural tube abnormalities, often detected during pregnancy by ultrasound. The most common and severe type is myelomeningocele, while spina bifida occulta is the mildest and may go unnoticed for years.

Types of Spina Bifida         

Spina Bifida Occulta:

• The mildest form; often no visible signs.
• Usually discovered incidentally on X-ray or MRI.
• Might have a small tuft of hair or dimple on the back.

Meningocele:

• A sac of fluid pushes through an opening in the spine.
• The spinal cord remains in place.
• Rare and less severe compared to myelomeningocele.

Myelomeningocele (also called congenital myelomeningocele):

• Most severe form of spina bifida.
• The spinal cord and nerves are exposed in a sac on the back.
• Requires immediate surgical intervention.

Symptoms of Spina Bifida         

• Visible sac or protrusion in the back (in open forms).
• Muscle weakness or paralysis in the legs.
• Difficulty with bowel and bladder control.
• Orthopedic issues like clubfoot or scoliosis.
• Hydrocephalus (fluid buildup in the brain).
• In spina bifida occulta, symptoms may include mild back pain or neurological issues later in life.

Causes of Spina Bifida         

• Incomplete closure of the neural tube during the first 4 weeks of pregnancy.
• Folic acid deficiency in the mother.
• Genetic mutations linked to neural tube defects.
• Maternal diabetes or obesity.
• Exposure to certain medications during pregnancy for example anti-seizure drugs.
• Family history of spina bifida or other NTDs.

Complications in Spina Bifida         

• Repeated infections such as meningitis.
• Developmental delays or learning difficulties.
• Mobility issues requiring braces or wheelchairs.
• Kidney damage due to bladder dysfunction.
• Skin sores or pressure ulcers from immobility.
• Emotional or psychological challenges in children and adults.

Risk Factors of Spina Bifida         

• Low maternal folate intake.
• Personal or family history of neural tube defects.
• Pregnancy with multiple babies (twins, triplets).
• Use of anti-seizure medications during pregnancy.
• Poorly controlled maternal diabetes.
• Ethnicity: More common in Caucasians and Hispanics.

Preventions of Spina Bifida         

• Take 400 mcg of folic acid daily before conception and during early pregnancy.
• Manage chronic conditions like diabetes.
• Avoid harmful medications during pregnancy unless prescribed.
• Maintain a healthy weight and balanced diet.
• Consider genetic counseling if there's a family history.
• Prenatal checkups and early ultrasounds for monitoring.