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  • Title: [Possibilities of using levosimendan in patients with idiopathic pulmonary hypertension].
    Author: Martyniuk TV, Arkhipova OA, Kobal' EA, Danilov NM, Chazova IE.
    Journal: Ter Arkh; 2012; 84(9):83-8. PubMed ID: 23091860.
    Abstract:
    AIM: To evaluate the efficiency and safety of intravenous infusion of levosimendan in patients with idiopathic pulmonary hypertension (IPH) and its clinical, hemodynamic, and neurohumoral effects. SUBJECTS AND METHODS: The study included 9 patients (mean age 31.8 +/- 8.7 years) with Functional Class III and IV IPH and severe right ventricular failure (RVF). Levosimendan was administered as dropwise intravenous infusion. The patients' general condition, blood pressure, heart rate, and 6-minute walk test results were assessed at baseline and 24 hours after levosimendan infusion, and then following 12 weeks. The time course of changes in blood neurohumoral mediators was determined and transthoracic echocardiography performed. RESULTS: At 24 hours after initiation of levosimendan infusion, there were substantial reductions in pulmonary artery systolic pressure, mean pulmonary artery pressure, mean right atrial pressure, and pulmonary vascular resistance. There was a significant increase in exercise tolerance. The blood exhibited lower norepinephrine and NT-proBNP and higher epinephrine concentrations. At 12 weeks after termination of levosimendan infusion, the improved functional status was preserved in the patients with IPH. There were no noticeable changes in the achieved key hemodynamic parameters. Only one patient needed re-administration of the drug 12 weeks later. The achieved changes in vasoactive mediators were retained 12 weeks following levosimendan infusion. Levosimendan treatment was not followed by clinically relevant adverse reactions requiring infusion termination and therapy discontinuation. CONCLUSION: 24-hour intravenous levosimendan infusion in patents with FC III-IV IPH and severe RVF causes positive changes in the key hemodynamic parameters and neurohumoral status of the patients and promotes stabilization in those with IPH at 12-week follow-up.
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