General Medicine

Polyuria

Polyuria is the production of excess urine; normal volumes are passed more often. It should be distinguished from the symptom of urinary frequency. >2 litres (L) in 24 hours is probable and > 3 L is definite polyuria. A more >accurate method is calculating the amount in relation to body weight, i.e. >> 30 mL/kg/24 hours. Polyuria is usually accompanied by excessive drinking >i.e. polydipsia. The causes include cranial diabetes insipidus, nephrogenic >diabetes insipidus, Fanconi's syndrome, chronic renal failure >hydronephrosis and diabetes mellitus. Treatment is aimed at the causative >factor. Lack of ADH is treated with synthetic arginine vasopressin

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