RT Journal Article T1 Benefit of tolvaptan in the management of hyponatraemia in patients with diuretic-refractory congestive heart failure: the SEMI-SEC project. A1 Pose, Antonio A1 Almenar, Luis A1 Gavira, Juan José A1 López-Granados, Amador A1 Blasco, Teresa A1 Delgado, Juan A1 Aramburu, Oscar A1 Rodríguez, Avelino A1 Manzano, Luis A1 Manito, Nicolás K1 Congestive heart failure K1 Diuresis K1 Hyponatraemia K1 Tolvaptan K1 Vasopressin type 2 receptors AB Hyponatraemia is an electrolyte disorder that occurs in advanced congestive heart failure (HF) and worsens prognosis. We explored the usefulness of tolvaptan, which has shown promising results in the treatment of this condition. This study is based on a retrospective national registry (2011-15) of patients hospitalized with refractory HF and hyponatraemia who agreed to receive tolvaptan when standard treatment was ineffective. The benefit of tolvaptan was analysed according to the following criteria: normalization ([Na+] ≥ 135 mmol/L) or increased sodium levels [Na+] ≥ 4 mEq/L on completion of treatment, and increase in urine output by 300 or 500 mL at 48 h. Factors associated with tolvaptan benefit were explored. A total of 241 patients were included, 53.9% of whom had ejection fraction An increase in sodium levels and/or improvement in urine output was observed in patients admitted for HF and refractory hyponatraemia under tolvaptan treatment. Tolvaptan may be useful in this setting, in which no effective proven alternatives are available. SN 2055-5822 YR 2017 FD 2017-01-19 LK https://hdl.handle.net/10668/24774 UL https://hdl.handle.net/10668/24774 LA en DS RISalud RD Apr 8, 2025