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How is Bartter's Syndrome diagnosed?

See how Bartter's Syndrome is diagnosed. Which specialists are essential to meet, what tests are needed and other useful information for the diagnosis of Bartter's Syndrome

Bartter's Syndrome diagnosis

Bartter's Syndrome is a rare genetic disorder that affects the kidneys' ability to reabsorb certain electrolytes, leading to imbalances in the body's salt and fluid levels. Diagnosing Bartter's Syndrome involves a combination of clinical evaluation, laboratory tests, and genetic testing.



Clinical Evaluation: The first step in diagnosing Bartter's Syndrome is a thorough clinical evaluation by a healthcare professional. They will review the patient's medical history, including any symptoms or signs that may indicate electrolyte imbalances. The healthcare provider will also perform a physical examination to assess for any characteristic features associated with Bartter's Syndrome.



Laboratory Tests: Various laboratory tests are conducted to evaluate the levels of electrolytes and other substances in the blood and urine. These tests help identify the specific electrolyte imbalances commonly seen in Bartter's Syndrome. The following tests are typically performed:




  • Blood Tests: Blood samples are taken to measure the levels of potassium, sodium, chloride, magnesium, and calcium. Individuals with Bartter's Syndrome often exhibit low potassium (hypokalemia) and alkalosis (higher pH) due to excessive loss of potassium and chloride in the urine.

  • Urine Tests: Urine samples are collected to measure the levels of electrolytes, such as potassium, sodium, and chloride. In Bartter's Syndrome, there is increased excretion of these electrolytes in the urine, leading to their depletion in the body.

  • Renal Function Tests: These tests assess the overall function of the kidneys, including glomerular filtration rate (GFR) and urine concentration ability. Individuals with Bartter's Syndrome may have normal or slightly reduced GFR, but their kidneys are unable to properly reabsorb electrolytes.



Genetic Testing: Genetic testing plays a crucial role in confirming the diagnosis of Bartter's Syndrome. It involves analyzing the patient's DNA to identify specific mutations in genes associated with the disorder. The most common genetic mutations found in Bartter's Syndrome affect genes involved in the transport of electrolytes in the kidneys, such as the SLC12A1, KCNJ1, CLCNKB, and BSND genes. Genetic testing can be performed using a blood sample or, in some cases, a saliva sample.



Additional Imaging: In some cases, additional imaging studies may be conducted to evaluate the structure and function of the kidneys. These may include ultrasound, computed tomography (CT), or magnetic resonance imaging (MRI) scans. Imaging can help identify any structural abnormalities or kidney damage that may be contributing to the electrolyte imbalances.



It is important to note that the diagnosis of Bartter's Syndrome requires the expertise of healthcare professionals, including nephrologists and geneticists. The combination of clinical evaluation, laboratory tests, and genetic testing allows for an accurate diagnosis and helps differentiate Bartter's Syndrome from other similar conditions, such as Gitelman Syndrome or Liddle Syndrome.


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Bartter's Syndrome forum

BARTTER'S SYNDROME FORUM
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Je recherche des parents dont l'enfant est atteint du syndrome de bartter, tout comme moi, pour échanger sur cette maladie.

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