What is hyponatremia and how is it treated
Ava White
Updated on March 25, 2026
For severe or acute hyponatremia, treatment typically involves the intravenous administration of fluids and electrolytes. In these situations, medications are often needed that treat the underlying cause of the hyponatremia as well as medications to manage the accompanying symptoms.
What causes hyponatremia?
Hyponatremia is decrease in serum sodium concentration < 136 mEq/L (< 136 mmol/L) caused by an excess of water relative to solute. Common causes include diuretic use, diarrhea, heart failure, liver disease, renal disease, and the syndrome of inappropriate antidiuretic hormone secretion (SIADH).
What is the fastest way to cure hyponatremia?
For serious symptomatic hyponatremia, the first line of treatment is prompt intravenous infusion of hypertonic saline, with a target increase of 6 mmol/L over 24 hours (not exceeding 12 mmol/L) and an additional 8 mmol/L during every 24 hours thereafter until the patient’s serum sodium concentration reaches 130 mmol/L.
What is the best treatment for hyponatremia?
- Intravenous fluids. Your doctor may recommend IV sodium solution to slowly raise the sodium levels in your blood. …
- Medications. You may take medications to manage the signs and symptoms of hyponatremia, such as headaches, nausea and seizures.
What can happen from hyponatremia?
Signs and symptoms of hyponatremia can include altered personality, lethargy and confusion. Severe hyponatremia can cause seizures, coma and even death.
Who is at risk for hyponatremia?
Hyponatremia is more likely in people living with certain diseases, like kidney failure, congestive heart failure, and diseases affecting the lungs, liver or brain. It often occurs with pain after surgery. Also, people taking medications like diuretics and some antidepressants are more at risk for this condition.
How long does it take to recover from low sodium?
Generally, low sodium is asymptomatic (does not produce symptoms), when it is mild or related to your diet. It can take weeks or months for you to experience the effects of low salt in your diet—and these effects can be corrected by just one day of normal salt intake.
How do I raise my sodium level?
Intravenous (IV) fluids with a high-concentration of sodium, and/or diuretics to raise your blood sodium levels. Loop Diuretics – also known as “water pills” as they work to raise blood sodium levels, by making you urinate out extra fluid.What should I eat if I have hyponatremia?
- Any fresh or frozen beef, lamb, pork, poultry and fish.
- Eggs and egg substitutes.
- Low-sodium peanut butter.
- Dry peas and beans (not canned)
- Low-sodium canned fish.
- Drained, water or oil packed canned fish or poultry.
Most patients with hypovolemic hyponatremia can be treated successfully with isotonic saline solution (0.9% NaCl), but in the presence of severe symptoms, such as seizures or coma, hypertonic saline infusion is required [7].
Article first time published onWhat happens if hyponatremia is not treated?
If the hyponatremia is not effectively treated, the symptoms may progress from mild confusion to acute delirium, seizures, coma, and even death [38]. Furthermore, the risk of hyponatremia in patients with psychosis is increased by treatment with fluoxetine, tricyclic antidepressants, or calcium channel blockers [39].
How do you reverse hyponatremia?
A true neurologic emergency, symptomatic acute hyponatremia can be corrected with sequential boluses of 100-300 mL of 3% saline to rapidly increase the sodium level by a goal of 4 to 6 mEq/L, a change experts say will forestall osmotic shifts and prevent the most dangerous immediate neurologic effects of a low serum …
Will eating salt help hyponatremia?
In elderly patients with a diet poor in protein and sodium, hyponatremia may be worsened by their low solute intake. The kidney’s need to excrete solutes aids in water excretion. An increase in dietary protein and salt can help improve water excretion.
How much water should I drink for hyponatremia?
The authors of the study report that hyponatremia symptoms can develop if a person drinks 3–4 liters of water in a short period, though they do not give a specific time estimate. According to one case report , soldiers developed symptoms after consuming at least 2 quarts (1.9 liters) of water per hour.
What is the most severe complication of hyponatremia?
Acute hyponatremia can lead to much more severe complications such as cerebral edema, brain disease, herniation of the brain, cardiopulmonary arrest, seizure, coma and even death.
Are bananas good for hyponatremia?
Banana: Banana for its rich potassium content could prove to be very effective to regulate your dipping sodium levels.
What organs are affected by hyponatremia?
Hyponatremia occurs when your blood sodium level goes below 135 mEq/L. When the sodium level in your blood is too low, extra water goes into your cells and makes them swell. This swelling can be dangerous especially in the brain, since the brain cannot expand past the skull.
Which fruit has high sodium?
Products made from these fruits like applesauce, apple juice, dried apples, jams made from apples and guavas are also sodium-rich. Avocados, papaya, mangoes, carambola, pineapple, bananas, watermelons and pears also contain sodium but in low quantities. Celery and beet are two vegetables with high sodium content.
What is critical hyponatremia?
Severe hyponatremia is often defined as PNa level under 120 mmol/L and may lead to seizures, obtundation, coma, and respiratory arrest (Ayus et al., 1985; Sterns et al., 1994; Halawa et al., 2011; Spasovski et al., 2014).
Can low sodium affect your eyes?
Hyponatremia can cause neurological problems such as seizures however its ocular side effects are not commonly encountered in daily practice. A decrease in sodium levels can cause choroidal swelling leading to hyperopic shifts.
How do elderly increase sodium levels?
- Adjust or change medications.
- Cut back on water and fluid consumption.
- Seek treatment for underlying conditions or diseases.
- Eat foods that are high in sodium.
- Increase dietary protein to aid in water excretion.
- Infusing an intravenous sodium solution.