What Are Normal Serum Sodium Levels?

by | Last updated on January 24, 2024

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A normal blood sodium

What is high serum sodium?

Hypernatremia occurs when the serum sodium concentration is

higher than 145 milliequivalents per liter

(mEq/l) . It means that the level of sodium in a person’s blood is too high. Two common causes of hypernatremia are insufficient fluid intake and too much water loss.

What level is too low for sodium?

How low is too low? 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.

Is sodium level of 134 bad?

Normally, your sodium level should be between 135 and 145 milliequivalents per liter.

Hyponatremia

occurs when your sodium level goes below 135 mEq/L.

What is a critical sodium level?

In many hospital laboratories

160 mEq/L

is chosen as the upper critical value. The evidence of this study suggests that sodium in the range of 155-160 mEq/L is associated with high risk of death and that 155 mEq/L rather than 160 mEq/L might be more suitable as the upper critical level.

What is dangerously low sodium?

Severe hyponatremia occurs when

levels drop below 125 mEq/L

. Health issues arising from extremely low sodium levels may be fatal. Hyponatremia is the most common electrolyte disorder that doctors encounter. Research suggests that approximately 1.7 percent of people in the United States have the condition.

Which organ is most affected by 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.

What happens if sodium is too high?

Hypernatremia typically causes thirst. The most serious symptoms of hypernatremia result from brain dysfunction. Severe hypernatremia can lead to

confusion, muscle twitching, seizures, coma, and death

.

What are symptoms of high sodium?

  • Excess thirst.
  • Infrequent urination.
  • Vomiting.
  • Diarrhea.

What are the symptoms of too much sodium?

Although there are lots of short-term effects to watch out for, there are also long-term effects of eating too much salt. It might raise your chances of things like

enlarged heart muscle, headaches, heart failure, high blood pressure, kidney disease, kidney stones, osteoporosis, stomach cancer, and stroke

.

What happens when your body is low on sodium?

Low blood sodium is common in older adults, especially those who are hospitalized or living in long-term care facilities. Signs and symptoms of hyponatremia can include

altered personality, lethargy and confusion

. Severe hyponatremia can cause seizures, coma and even death.

How fast can you correct sodium?

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.

What causes sodium deficiency?

A low sodium level has many causes, including consumption of too many fluids,

kidney failure, heart failure, cirrhosis, and use of diuretics

. Symptoms result from brain dysfunction.

How long does it take to correct 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.

What foods raise sodium levels?

  • Smoked, cured, salted or canned meat, fish or poultry including bacon, cold cuts, ham, frankfurters, sausage, sardines, caviar and anchovies.
  • Frozen breaded meats and dinners, such as burritos and pizza.
  • Canned entrees, such as ravioli, spam and chili.
  • Salted nuts.
  • Beans canned with salt added.

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.

James Park
Author
James Park
Dr. James Park is a medical doctor and health expert with a focus on disease prevention and wellness. He has written several publications on nutrition and fitness, and has been featured in various health magazines. Dr. Park's evidence-based approach to health will help you make informed decisions about your well-being.