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Hyponatremia - Symptoms, Types, Causes & Diagnosis

Hyponatremia - Symptoms, Types, Causes & Diagnosis

Hyponatremia occurs when your blood sodium levels are abnormally low. An electrolyte called sodium aids in controlling the volume of water in and around your cells. Once you have hyponatremia, your body's sodium levels are...

Hyponatremia: When Your Body's Sodium Levels are Out of Adjustment

What is Hyponatremia?

Hyponatremia occurs when your blood sodium levels are abnormally low. An electrolyte called sodium aids in controlling the volume of water in and around your cells. Once you have hyponatremia, your body's sodium levels are weakened for one or more reasons, such as a fundamental restorative condition or drinking as well as much water. When this happens, your body's water substance increments and your cells begin to swell. From minor to possibly lethal well-being issues, this swelling can be the source of various.   

How Common is Hyponatremia?

Hyponatremia is very common. It is the most typical chemical anomaly observed in hospitalized and outpatient patients. Those who are admitted to hospital care units or who have the aforementioned medical disorders have a greater incidence of hyponatremia.

Are there Types of Hyponatremia?

You might learn about various forms of hyponatremia.

Types of Hyponatremia:

  • Euvolemic hyponatremia: This condition develops when your body's sodium levels stay consistent but the amount of water in your body as a whole increase.
  • Hypervolemic hyponatremia: This condition develops when a person's body water content rises more than their sodium intake does.
  • Hypovolemic hyponatremia: This condition is characterized by a fall in total body water that is higher than the decline in total body sodium.
  • Dilutional hyponatremia: It is a type of low blood sodium level that is also referred to as "water intoxication." When electrolytes, which supply vital minerals like calcium, potassium, and salt, are not present, it refers to drinking excessive amounts of water.

Most individuals would drink a part of water rapidly to lower their blood salt levels unless they had well-being issues that make them vulnerable to hyponatremia.

Known also as hypotonic hyponatremia, hyperosmolar hyponatremia Low quantities of proteins, nutrients, and electrolytes (particularly sodium) are known as hyposmolality. Hyposmolality may result from hyponatremia.

What Causes Hyponatremia?

"Hyponatremia: the hidden danger of electrolyte imbalances."

Specific causes of hyponatremia are generally divided into hypotension (lower than normal solute concentrations), non-hypotension, and false hyponatremia. The low-pitched individuals are then grouped according to whether they have high volume, normal volume, or low volume. A low-sodium diet alone rarely causes hyponatremia.

High volume: Both sodium content and water content increase.  Elevated sodium levels lead to hypervolemia and water levels lead to hyponatremia.

  • Liver cirrhosis
  • Heart failure
  • Renal nephrotic syndrome
  • Excessive drinking of liquids 

Normal Volume: Body volume swelling, no edema, but hyponatremia occurs

  • SIADH (and its many causes)
  • Hypothyroidism
  • Not enough ACTH
  • Beer potomania
  • Normal physiological changes of pregnancy
  • Osmostat reset

Low Volume:

Hypovolemia (decrease in extracellular volume) is due to systemic sodium loss. Hyponatremia is caused by relatively low systemic water loss.

Causes of hypovolemia, such as prolonged vomiting, reduced oral intake, and severe diarrhea.

Use of Diuretics:

There are two conditions where the adrenal glands do not produce enough steroid hormones: Addison's disease and congenital adrenal hyperplasia (combined glucocorticoid and mineralocorticoid insufficiency).

  • Isolated hyperhidrosis (carbonic anhydrase XII deficiency)- It is a rare genetic disorder that results in a lifelong tendency to lose excessive amounts of sodium through sweating.
  • Pancreatitis: Sweating due to prolonged exercise in combination with electrolyte-deficient drinking water is the cause of exercise-related hyponatremia (EAH). It is commonly seen in marathon runners and participants in other endurance events.
  • The use of MDMA (Ecstasy) can cause hyponatremia.
  • Medicine: A review of medical literature from 1946 to 2016 reported that antipsychotic drugs cause hyponatremia. Available evidence indicates that all classes of psychotropic drugs, namely antipsychotics, H. Antidepressants, disposition stabilizers, and sedatives/hypnotics, can cause hyponatremia.  Age is a major factor in drug-induced hyponatremia.

Other Causes

Other causes that do not fit the above classification scheme include:

  • Pseudohyponatremia is caused by erroneous laboratory measurements of sodium due to greatly elevated blood triglyceride levels or extreme elevations in immunoglobulins, as can occur in multiple myeloma.
  • Hypertonic hyponatremia can occur with high blood sugar levels, causing excess free water to migrate into the serum. 

Who is Most at Risk for Hyponatremia?

The risk of hyponatremia may be increased by the following variables:

  1. Year: Older people may have more factors that contribute to hyponatremia, including age-related changes, and use of certain medications, and more likely to develop chronic conditions that alter the body's sodium balance.
  2. Certain Drugs: Drugs that increase the risk of hyponatremia include thiazide diuretics, antidepressants, and pain relievers. In addition, recreational drug ecstasy is associated with fatal cases of hyponatremia.
  3. A condition in which the body's water excretion is reduced. Conditions that can increase the risk of hyponatremia incorporate kidney malady, unseemly antidiuretic hormone disorder (SIADH), and heart disappointment.  
  4. Strenuous physical activity- Individuals who drink as well much water while taking part in marathons, ultramarathons, triathlons, and other long-distance, high-intensity activities are at increased risk of hyponatremia.

How is Hyponatremia Diagnosed?

A medical history, physical examination, and laboratory tests are required to identify the underlying cause of hyponatremia. A blood test showing serum sodium