Diabetes insipidus sodium and potassium levels, Acta Medica () | Arcanum Digitheca


    Acta Medica Margit-László, F. Each experiment lasted 5 hours.

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    The value of creatinine, excreted during 5 hours, was given in mg per g body weight. We determined also the ratio Na:K. The results for the animals with their infundibulum damaged are shown in Table I. In the animals with infundibular lesion, the concentration and excreted amount of the exam­ined ions rose the increase in the excretion of potassium was insignificantwhile — in contrast to intact animals — urinary volume and creatinine excre­tion became considerably less.

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    Table II shows the results for the hypophysectomized rats and rats which received a subcutaneous injection of 5 mg of cortisone Adreson, Organon, Oss 12 hours prior to the water load.

    These were identical with those described in earlier communications [5, 6, 15].

    diabetes insipidus sodium and potassium levels a cukorbetegség 2 fény alakú kezelése

    The diuretic and saluretic actions of chloro­thiazide became less pronounced in rats with reduced creatinine excretion that had been hypophysectomized several weeks earlier. When, on the other hand, hypophysectomized animals were given cortisone, the diuretic­­saluretic effect of chlorothiazide was intensified and the excretion of creatinine more pronounced.

    Discussion The administration of chlorothiazide elicited different reactions in pa­tients suffering from diabetes insipidus and those suffering from psychogenic polydipsia.

    Acta Medica Csapó, A. The drug presumably produces the same effect on the myocardial cells, and the consequential change in membrane potential would explain the elongation of the corrected QT-distance, the changes of the T-wave and the ST-interval, as observed in electrocardiographic investigations. Changes in the ECG were likewise observed [3]. The drug induced pronounced bradycardia in both humans and dogs, and the corrected QT-distance became significantly longer.

    The discrepancy might seem surprising, a lack of ADH being re­sponsible for both conditions. Yet, while the production of ADH is inhibited by a disorder of the hypothalamo-neurohypophyseal system in diabetes insi­pidus, the brain centres are unimpaired in psychogenic polydipsia and it is the hypo-osmosis which prevents the mobilization of the hormone. Even the symptoms are practically the same in both syndromes and the.