Bartter Syndrome in Children

Overview

Bartter syndrome is a rare genetic disorder that affects the kidneys’ ability to reabsorb sodium, chloride, and potassium, leading to an imbalance of electrolytes in the body. This condition is named after Dr. Frederic Bartter, who first described it in the 1960s. Bartter syndrome is characterized by low levels of potassium (hypokalemia), metabolic alkalosis (an imbalance in the body’s acid-base balance), and an increased production of urine. While the condition can vary in severity, it often presents in infancy or early childhood.

Symptoms

Symptoms of Bartter syndrome can differ based on the specific type of the syndrome and the age of onset. Common signs include:

  • Frequent urination and increased thirst
  • Low blood potassium levels, which may cause muscle weakness, cramps, or fatigue
  • Metabolic alkalosis, leading to symptoms such as nausea, vomiting, and abdominal pain
  • Dehydration and weight loss
  • Growth delays in children
  • High levels of aldosterone in the blood, which can lead to increased blood pressure

Causes

Bartter syndrome is primarily caused by genetic mutations that affect the kidneys’ ability to transport certain electrolytes. There are several different types of Bartter syndrome, each linked to specific genetic mutations:

  • Classic Bartter syndrome: Often caused by mutations in the SLC12A1 gene, which encodes a protein responsible for sodium reabsorption in the kidneys.
  • Gitelman syndrome: A variant of Bartter syndrome with similar symptoms but different genetic causes, usually linked to mutations in the SLC12A3 gene.
  • Other rare forms: Genetic mutations affecting other transport proteins in the kidneys can also cause Bartter syndrome.

Diagnosis

Diagnosis of Bartter syndrome typically involves a combination of clinical evaluation, laboratory tests, and imaging studies. The diagnostic process may include:

  • Physical examination: A healthcare provider will assess the child’s growth, hydration status, and symptoms.
  • Blood tests: These tests will check levels of potassium, chloride, sodium, and bicarbonate, along with kidney function markers.
  • Urine tests: Analysis of urine samples can help identify electrolyte imbalances and excessive urinary excretion of certain substances.
  • Genetic testing: If Bartter syndrome is suspected, genetic testing can confirm the diagnosis by identifying specific mutations.

Treatment Options

While there is no cure for Bartter syndrome, treatment focuses on managing symptoms and maintaining electrolyte balance. Treatment options include:

  • Potassium supplements: To help correct low potassium levels, oral potassium supplements are often prescribed.
  • Nonsteroidal anti-inflammatory drugs (NSAIDs): Medications such as indomethacin may be used to reduce urinary prostaglandin levels, which can help improve kidney function and electrolyte balance.
  • Salt supplements: Increasing dietary salt intake can help retain more sodium and fluid in the body.
  • Hydration: Ensuring proper hydration is essential for children with Bartter syndrome, especially during hot weather or illness.
  • Monitoring and follow-up: Regular check-ups with a pediatric nephrologist are vital to monitor kidney function and electrolyte levels.

Patient Success Stories

At Gertrude’s Children’s Hospital, we are committed to providing the best possible care for children with Bartter Syndrome. Here’s why families trust us:

“When our daughter was diagnosed with Bartter syndrome, we felt overwhelmed. However, the team at Gertrude’s Children's Hospital provided incredible support and guidance. Thanks to their expertise, our daughter is thriving, and we have the tools we need to manage her condition.”

Miaparent of a child with Bartter syndrome

Bartter Syndrome in Children

Yes, Bartter syndrome is a genetic disorder caused by mutations in specific genes. It can be inherited in an autosomal recessive manner, meaning that both parents must carry the gene mutation for a child to be affected.

There is currently no cure for Bartter syndrome, but with proper management and treatment, children with the condition can lead healthy, active lives.

Regular follow-up appointments with a pediatric nephrologist are important to monitor your child’s growth, electrolyte levels, and overall health. The frequency of these visits will depend on the severity of the condition and the effectiveness of treatment.

Contact Us

If your child has been diagnosed with Bartter syndrome or if you have concerns about their kidney health, we encourage you to schedule an appointment with our pediatric nephrology team. We are here to provide expert care and support for your family.

Contact us today to learn more about our Bartter Syndrome in Children treatment options.

Book Appointment