A 33-year-old man is complaining of feeling thirsty all the time and passing more urine than usual. His physical examination is normal, except for a JVP at the sternal angle. His serum sodium is 150 mEq/L, glucose 120 mg/dL, and osmolality 315 mOsm/kg. The urine sodium is 20 mE/L and osmolality 260 mOsm/kg. Which of the following drugs is most likely to cause this disorder?
A 33-year-old man is complaining of feeling thirsty all the time and passing more urine than usual. His physical examination is normal, except for a JVP at the sternal angle. His serum sodium is 150 mEq/L, glucose 120 mg/dL, and osmolality 315 mOsm/kg. The urine sodium is 20 mE/L and osmolality 260 mOsm/kg. Which of the following drugs is most likely to cause this disorder?
💡 Explanation
A 33-year-old man is complaining of feeling thirsty all the time and passing more urine than usual. His physical examination is normal, except for a JVP at the sternal angle. His serum sodium is 150 mEq/L, glucose 120 mg/dL, and osmolality 315 mOsm/kg. The urine sodium is 20 mE/L and osmolality 260 mOsm/kg. Which of the following drugs is most likely to cause this disorder?
✓ Correct Answer: A. lithium
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