Turkish Journal of Internal Medicine

Yazarlar: Emel ISIKTAS SAYILAR, Alparslan ERSOY, Yavuz AYAR, Mehmet Fethullah AYDIN, Mahmut YAVUZ

Konular:Genel ve Dahili Tıp

DOI:10.46310/tjim.706226

Anahtar Kelimeler:Arginine vasopressin,Heart failure,Hyponatremia,Syndrome of inappropriate antidiuretic hormone secretion,Tolvaptan

Özet: Objective: Non-peptide vasopressin receptor antagonists (vaptans) are effective at increasing sodium in euvolemic and hypervolemic states and appear safe. We aimed to evaluate the efficacy of tolvaptan in euvolemic or hypervolemic hyponatremic patients. Methods: The study included 9 hyponatremic (serum sodium level <125 mmol/L) patients. Serum potassium levels of all patients were normal and there was no acid-base disturbance. Patients with hypovolemic status and hepatic dysfunction were excluded from the study. Clinical and laboratory data of patients were obtained before and after tolvaptan (7.5 mg/day) treatment. Results: The median age of patients (6 females, 3 males) was 66.3 years (range, 56-82). The mean sodium levels before tolvaptan treatment were 120.5 mEq/L (SD 2.2, range, 116-124). The mean sodium levels increased significantly to 132.6±4.0 mEq/L (range, 125-140) after tolvaptan treatment at 2.7±1.3 days (range, 2-6) (p<0.001). Hyponatremia did not recur after tolvaptan treatment. We did not observe serious adverse event related with tolvaptan treatment. Conclusion: Hyponatremia was a common problem, and tolvaptan can treat hyponatremia effectively and safely in patients with euvolemic or hypervolemic hyponatremia.

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