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  • Title: Clinical efficacy and survival with first-line inhaled iloprost therapy in patients with idiopathic pulmonary arterial hypertension.
    Author: Opitz CF, Wensel R, Winkler J, Halank M, Bruch L, Kleber FX, Höffken G, Anker SD, Negassa A, Felix SB, Hetzer R, Ewert R.
    Journal: Eur Heart J; 2005 Sep; 26(18):1895-902. PubMed ID: 15888496.
    Abstract:
    AIMS: To describe the long-term clinical efficacy of inhaled iloprost as first-line vasodilator mono-therapy in patients with idiopathic pulmonary arterial hypertension (IPAH). METHODS AND RESULTS: Seventy-six IPAH patients were prospectively identified and treated with inhaled iloprost. Clinical, haemodynamic, and exercise parameters were obtained at baseline, after 3 and 12 months of therapy and yearly thereafter. Four endpoints were prospectively defined as follows: (i) death, (ii) transplantation, (iii) switch to intravenous (i.v.) therapy, or (iv) addition of or switch to other active oral therapy. During follow-up (535+/-61 days), 11 patients died, six were transplanted, 25 were switched to i.v. prostanoids, 16 received additional or other oral therapy, and 12 patients discontinued iloprost inhalation for other reasons. Event-free survival at 3, 12, 24, 36, 48, and 60 months was 81, 53, 29, 20, 17 and 13%, respectively. Among haemodynamic and exercise parameters, mixed venous oxygen saturation (P<0.001), right atrial pressure (P<0.001), and peak oxygen uptake (P=0.002) were associated with event-free survival. CONCLUSION: In this study, only a minority of patients could be stabilized with inhaled iloprost mono-therapy during a follow-up period of up to 5 years. In the presence of multiple treatment options, chronic iloprost inhalation as mono-therapy appears to have a limited role.
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