What condition is defined as a low sodium level in the blood?

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Multiple Choice

What condition is defined as a low sodium level in the blood?

Explanation:
Low sodium in the blood is called hyponatremia. Sodium helps regulate water balance outside cells, and when its level falls, water moves into cells, causing them to swell—brain cells are especially sensitive. This can produce symptoms like confusion, nausea, seizures, or even coma if severe. The other terms refer to different ions: hypernatremia means too much sodium, while hypokalemia and hyperkalemia refer to too little and too much potassium, respectively.

Low sodium in the blood is called hyponatremia. Sodium helps regulate water balance outside cells, and when its level falls, water moves into cells, causing them to swell—brain cells are especially sensitive. This can produce symptoms like confusion, nausea, seizures, or even coma if severe. The other terms refer to different ions: hypernatremia means too much sodium, while hypokalemia and hyperkalemia refer to too little and too much potassium, respectively.

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