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  • Title: [Polyuria].
    Author: Treutler T, Ruf B, Beige J.
    Journal: Ther Umsch; 2006 Sep; 63(9):615-8. PubMed ID: 17048178.
    Abstract:
    Beyond polyuria following psychogenic polydipsia, in a more narrow sense, this condition may be classified into impaired water re-absorption (i) due to tubular injury or (ii) relative or absolute loss of function of antidiuretic hormone (ADH). Tubular injury may be caused by different toxins affecting the ascending Henle loop as hypercalciuria, drugs and antibiotics as tubular necrosis. ADH deficiency, either absolute or relative, occurs with central or peripheral diabetes insipidus, which is based on synthesis failure or loss of peripheral efficacy of ADH due to receptor malfunction. Diagnosis of polyuria rests upon a thirst challenge in conjunction with laboratory studies of osmolality in serum and urine, which discloses the non-function of the hypothalamic-renal axis. Administration of ADH may differentiate between central and peripheral diabetes insipidus.
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