Описание
Furosemide-induced sodium depletion stimulates compensatory proximal tubular reabsorption of both sodium and lithium, raising lithium levels into the toxic range.
Механизм
Loop diuretics like furosemide deplete total body sodium; the kidney compensates by increasing proximal tubular reabsorption of sodium, and lithium (handled similarly to sodium) is reabsorbed in parallel.
Клиническое значение
Lithium toxicity during furosemide therapy is well-documented; dehydration from high-dose furosemide compounds the risk further.
Тактика ведения
Monitor serum lithium levels closely when initiating, changing, or discontinuing furosemide; ensure adequate sodium and fluid intake.
Медицинский отказ от ответственности
This content is for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before making medication decisions.