Medicine The syndrome of inappropriate antidiuretic hormone is characterized by the following : A Hyponatremia and urine sodium excretion > 20 meq/l B Hypernatremia and urine sodium excretion > 20 meq/l C Hyponatremia and hyperkalemia D Hypernatremia and hypokalemia 💡 Explanation The syndrome of inappropriate antidiuretic hormone is characterized by the following : ✓ Correct Answer: A. Hyponatremia and urine sodium excretion > 20 meq/l