Isotonic hyponatremia

Isotonic hyponatremia is a medical condition characterized by a low concentration of sodium in the blood, but with a normal total body water content. It is a subtype of hyponatremia, which is a broader term for any condition where sodium levels are abnormally low.

Causes

Isotonic hyponatremia can be caused by a variety of factors. One common cause is the use of certain medications, such as diuretics, which can increase the excretion of sodium from the body. Other causes can include conditions that lead to a loss of sodium from the body, such as Addison's disease, congestive heart failure, and cirrhosis.

Symptoms

The symptoms of isotonic hyponatremia can vary depending on the severity of the condition. Mild cases may not cause any symptoms, while more severe cases can lead to symptoms such as nausea, headache, confusion, seizures, and in extreme cases, coma or death.

Diagnosis

Diagnosis of isotonic hyponatremia typically involves a blood test to measure the level of sodium in the blood. Other tests may be performed to determine the underlying cause of the condition, such as tests for kidney function, liver function, and adrenal function.

Treatment

Treatment for isotonic hyponatremia typically involves addressing the underlying cause of the condition. This may involve adjusting the dosage or type of medication being taken, treating any underlying diseases or conditions, or in some cases, administering intravenous fluids to increase the level of sodium in the blood.

See also

• Hyponatremia
• Hypernatremia
• Water-electrolyte imbalance