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What is iatrogenic hyponatremia

Author

William Harris

Updated on March 27, 2026

Iatrogenic hyponatremia in hospitalized children is a common problem. It is usually caused by the administration of free water, either orally or through the prescription of hypotonic intravenous fluids.

What are the three types of hyponatremia?

Hyponatremia is classified as pseudo hyponatremia, true and translocational hyponatremia [Figure 1]. Normal serum osmolality is 280-295 mosm/kg.

How is drug induced hyponatremia treated?

Demeclocycline (Declomycin) in a dosage of 600 to 1,200 mg daily is effective in patients with refractory hyponatremia. Loop diuretics can be used in patients with volume overload. Arginine vasopressin receptor antagonists may be useful in patients with chronic hyponatremia.

What is the most common cause of 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 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 organs are affected by hyponatremia?

Hyponatremia can result from multiple diseases that often are affecting the lungs, liver or brain, heart problems like congestive heart failure, or medications.

Can you recover from hyponatremia?

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].

What are the complications of hyponatremia?

Complications related to hyponatremia include rhabdomyolysis, seizures, permanent neurologic sequelae related to ongoing seizures or cerebral edema, respiratory arrest, and death.

What happens when you have hyponatremia?

In hyponatremia, one or more factors — ranging from an underlying medical condition to drinking too much water — cause the sodium in your body to become diluted. When this happens, your body’s water levels rise, and your cells begin to swell. This swelling can cause many health problems, from mild to life-threatening.

How long does it take to correct hyponatremia?

In patients with severe symptomatic hyponatremia, the rate of sodium correction should be 6 to 12 mEq per L in the first 24 hours and 18 mEq per L or less in 48 hours. A bolus of 100 to 150 mL of hypertonic 3% saline can be given to correct severe hyponatremia.

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What drugs cause hyponatraemia?

  • Angiotensin-converting enzyme inhibitors (ACE inhibitors)
  • Heparin.
  • Diuretics.
  • Antidepressants.
  • Antipsychotics.
  • Carbamazepine.
  • Eslicarbazepine.
  • Oxcarbazepine.

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.

Which drugs can cause hyponatremia?

Known offenders include acetazolamide, amiloride, amphotericin, aripiprazole, atovaquone, thiazide diuretics, amiodarone, basiliximab, angiotensin II receptor blockers, angiotensin-converting enzyme inhibitors, bromocriptine, carbamazepine, carboplatin, carvedilol, celecoxib, cyclophosphamide, clofibrate, desmopressin, …

What fluids do you give for 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.

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.

How does hyponatremia affect the heart?

Persistent hyponatremia was also associated with higher rates of heart failure re-hospitalization and composite of death. Hence, patients with persistent hyponatremia have an increased risk for adverse events compared with patients with normal sodium levels, despite otherwise similar clinical improvements.

What is considered severe hyponatremia?

Severe hyponatremia (< 125 mEq/L) has a high mortality rate. In patients whose serum sodium level falls below 105 mEq/L, and especially in alcoholics, the mortality is over 50%.

Is a sodium level of 130 too low?

A: The normal level of sodium in the blood is between 135 mEq/L (milliequivalents per liter) and 145 mEq/L. A level below 135 is low. Doctors call it hyponatremia. In general, a sodium level of 130 mEq/L or higher is not dangerous unless there has been a recent rapid fall from a normal blood level.

Which antibiotic causes hyponatremia?

Antibiotics: Trimethoprim-sulfamethoxazole, ciprofloxacin, cefoperazone/sulbactam, rifabutin. Antiarrhythmic drugs: Amiodarone, lorcainide, propafenone. Theophylline. Proton pump inhibitors.

Is 127 a good sodium level?

Your blood sodium level is normal if it’s 135 to 145 milliequivalents per liter (mEq/L). If it’s below 135 mEq/L, it’s hyponatremia. Your doctor will be able to tell you whether your level is too low.

What is the most common cause of hypernatremia?

Two common causes of hypernatremia are insufficient fluid intake and too much water loss. In rare cases, consuming too much sodium can cause hypernatremia to occur. The opposite of hypernatremia is hyponatremia. This condition occurs when a person’s serum sodium level is less than 135 mEq/l.

What foods help 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.

How can I raise my sodium level quickly?

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.

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.

What does low sodium in your blood work mean?

If your results show lower than normal sodium levels, it may indicate: Diarrhea. Vomiting. Kidney disease. Addison disease, a condition in which your body’s adrenal glands don’t produce enough of certain types of hormones.

Can BP meds cause hyponatremia?

Abstract. Calcium channel blockers (CCBs), beta-receptor blockers (BBs), angiotensin-converting enzyme inhibitors (ACEIs), and angiotensin II receptor blockers (ARBs) have occasionally been reported to cause severe hyponatremia.

What is 3 saline used for?

Three percent sodium chloride (3% NaCl) is a hyperosmolar agent that can be lifesaving for patients with severe hyponatremic encephalopathy, traumatic brain injury, and cerebral edema.