Hyponatremia

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Hyponatremia refers to water intoxication. This is caused due to the loss of sodium and water during perspiration, which is only compensated by water alone resulting in low sodium content in the body. This is a growing concern in military training and common in athletes who drink water during high stamina physical activity.

*Disclaimer, to learn to recognize and effectively manage victims of hyponatremia enroll in advanced St Mark James first aid and CPR training programs.

Heat exhaustion can be easily confused with hyponatremia as the results and causes of occurrence are usually the same in both cases. Endurance trainers often suffer from confusion and faintness during strenuous physical exertion. However, most endurance trainers experience these events due to heat stroke, heat exhaustion or dehydration.

Heat and Sweat

Excessive sweating, heat and poor rehydration can lead to conditions such as hyponatremia

In hot climates and during vigorous sports activities, it is difficult to recognize hyponatremia due to the crucial need for water. The major symptoms of dehydration, heat exhaustion and heat stroke seem pretty much similar to those of hyponatremia and are often caused due to hot weathers and exercise—just like in hyponatremia.

 Symptoms

  • Weakness
  • Fatigue
  • Dizziness
  • Nausea
  • Slurred speech
  • Muscle cramps and joint pains
  • Confusion
  • Faintness
  • Loss of consciousness
  • Seizures (in severe cases)

Treatment

It is important that you are able to recognize the cause of the symptoms before you treat it. Make sure you are able to tell whether the casualty is suffering from hypnatremia, dehydration or any other heat related condition.

If the victim’s exhibiting severe symptoms such as severe or prolonged weakness, confusion, slurred speech, loss of consciousness or seizures, make sure emergency medical help is sought immediately, without worrying about what exactly caused these symptoms to arise. In emergency situations, it is crucial to act fast!

Dehydration and heat exhaustion are more common in athletes and labourers who work under the sun and symptoms may also look similar to those of hyponatremia. Heat stroke is a much more serious condition with a few distinct symptoms that make it easy to recognize such as:

  • Elevated skin temperature (above 104F)
  • Rapid pulse
  • High or low blood pressure
  • Shallow or rapid breathing
  • Inability to sweat
  • Dizziness and light-headedness
  • Personality changes: irritability and confusion
  • Unconsciousness
  • Nausea
  • Headaches
  • Fainting (often the initial sign in adults)
  • Coma

If a casualty is suffering from a heatstroke, make sure treatment is prompt and emergency medical help is sought immediately.

Ask if the casualty has been well-hydrated during training. If the victim says that he has been drinking over a pint full of water during training, you can establish an idea that he may be suffering from hyponatremia. Quick and large water intake can also lead to hyponatremia.

Hyponatremia results due to the body lacking salt, therefore, victims require salt when suffering from the condition. If minor symptoms such as nausea are present or before major symptoms like dizziness, cramp or confusion kick in, casualties can be treated with the consumption of salty food. Take caution while treating victims with heat-related symptoms. Victims of dehydration should not be given salt as all they need is water—so make sure you are able to differentiate between the two conditions.

Avoid over-the-counter pain relievers such as aspirin, ibuprofen or naprosyn as they may aggravate the condition even more.

Related Video to Hyponatremia

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If you need medical advice or help with a diagnosis contact a medical professional

[list icon="icon: check" icon_color="#11ae34"]

  • All cprcertificate.ca content is reviewed by a medical professional and / sourced to ensure as much factual accuracy as possible.

  • We have strict sourcing guidelines and only link to reputable websites, academic research institutions and medical articles.

  • If you feel that any of our content is inaccurate, out-of-date, or otherwise questionable, please contact us through our contact us page.

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