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Zapytanie: SZEWCZYK-SEIFERT
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Tytuł oryginału: Carvedilol does not modulate moderate exercise-induced hyperkalemia in hemodialysis patients.
Autorzy: Nowicki M., Szewczyk-Seifert G., Klimek D., Kokot F[ranciszek]
Źródło: Clin. Nephrol. 2002: 57 (5) s.352-358, il., tab., bibliogr. s. 357-358
Sygnatura GBL: 312,466

Hasła klasyfikacyjne GBL:
  • farmacja
  • nefrologia

    Typ dokumentu:
  • praca kliniczna
  • praca opublikowana za granicą
  • tytuł obcojęzyczny

    Wskaźnik treści:
  • ludzie
  • płeć męska
  • płeć żeńska

    Streszczenie angielskie: Background and aim: Non-selective á-adrenergic blockers may cause yperkalemia in patients with end-stage renal failure. In contrast, ŕ-adrenergic blockade has been found to decrease the hyperkalemic effect of physical exercise in healthy subjects, although we were unable to confirm this effect in hemodialysis patients. In a crossover design, we studied the effect of carvedilol, a non-selective á-adrenergic blocker with an additional ŕ1-blocking activity, on exercise-induced hyperkalemia in 17 anuric hemodialysis patients. Methods: All subjects were hiven either carvedilol (25 mg/day) or placebo for 2 weeks in a random order with a 2-week wash-out period. At the end of each treatment period they underwent a 30-minute exercise test on a bicycle ergometer with a fixed load of 20 W. Results: The treatment with carvedilol caused a significant decrease in blood pressure. Serum potassium before exercise tests was similar (5.37 ń 0.2 and 5.24 ń 0.2 mmol/l on carvedilol and placebo, respectively; mean ń SE). During the exercise, serum postassium oncreased significantly (p 0.001 in both tests) and subsequently decreased during 30 minutes of recovery (p 0.05). The mean rate of potassium increment during the exercise was similar (23.3 ń 3.3 ćmol/min on carvedilol and 20.0 ń 3.6 ćmol/l/min on placebo). during recovery, the mean rate of potassium decrement was 5.0 ń 3.0 ćmol/l/min and 6.7 ń 2.7 ćmol/l/min, respectively. Serum sodium, ionized calcium, insulin and plasma renin activity were similar before the exercise tests and did not change during the exercise. Conclusion: Carvedilol does not enhance the hyperkalemic effect of moderate physical exercise in anuric hemodialysis patients.

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