Medicine The syndrome of inappropriate antidiuretic hormone is characterized by the following: A Hyponatremia and hyperkalemia B Hypernatremia and hypokalemia C Hyponatremia and urine sodium excretion >20 meq/1 D Hypernatremia and urine sodium excretion>20 meq/1 💡 Explanation The syndrome of inappropriate antidiuretic hormone is characterized by the following: ✓ Correct Answer: C. Hyponatremia and urine sodium excretion >20 meq/1