Which is the most common electrolyte abnormality causing seizures in hospitalized patients?
Correct Answer: Hyponatremia
Description: Hyponatremia is MC electrolyte abnormality in hospitalized patients and values <120 mEq/dl lead to cerebral edema and resultant seizures. Plasma Na+ concentration <135 mM, is a very common disorder, occurring in up to 22% of hospitalized patients. This disorder is almost always the result of an increase in circulating AVP and/or increased renal sensitivity to AVP, combined with an intake of free water; a notable exception is a hyponatremia due to the low solute intake.
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