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Title: Inhaled iloprost for severe pulmonary hypertension
Authors: Olschewski, Horst ×
Simonneau, Gerald
Galiè, Nazzareno
Higenbottam, Timothy
Naeije, Robert
Rubin, Lewis J
Nikkho, Sylvia
Speich, Rudolf
Hoeper, Marius M
Behr, Jürgen
Winkler, Jörg
Sitbon, Olivier
Popov, Wladimir
Ghofrani, H Ardeschir
Manes, Alessandra
Kiely, David G
Ewert, Ralph
Meyer, Andreas
Corris, Paul A
Delcroix, Marion
Gomez-Sanchez, Miguel
Siedentop, Harald
Seeger, Werner #
Issue Date: Aug-2002
Series Title: The New England Journal of Medicine vol:347 issue:5 pages:322-9
Abstract: BACKGROUND: Uncontrolled studies suggested that aerosolized iloprost, a stable analogue of prostacyclin, causes selective pulmonary vasodilatation and improves hemodynamics and exercise capacity in patients with pulmonary hypertension. METHODS: We compared repeated daily inhalations of 2.5 or 5.0 microg of iloprost (six or nine times per day; median inhaled dose, 30 microg per day) with inhalation of placebo. A total of 203 patients with selected forms of severe pulmonary arterial hypertension and chronic thromboembolic pulmonary hypertension (New York Heart Association [NYHA] functional class III or IV) were included. The primary end point was met if, after week 12, the NYHA class and distance walked in six minutes were improved by at least one class and at least 10 percent, respectively, in the absence of clinical deterioration according to predefined criteria and death. RESULTS: The combined clinical end point was met by 16.8 percent of the patients receiving iloprost, as compared with 4.9 percent of the patients receiving placebo (P=0.007). There were increases in the distance walked in six minutes of 36.4 m in the iloprost group as a whole (P=0.004) and of 58.8 m in the subgroup of patients with primary pulmonary hypertension. Overall, 4.0 percent of patients in the iloprost group (including one who died) and 13.7 percent of those in the placebo group (including four who died) did not complete the study (P=0.024); the most common reason for withdrawal was clinical deterioration. As compared with base-line values, hemodynamic values were significantly improved at 12 weeks when measured after iloprost inhalation (P<0.001), were largely unchanged when measured before iloprost inhalation, and were significantly worse in the placebo group. Further significant beneficial effects of iloprost treatment included an improvement in the NYHA class (P=0.03), dyspnea (P=0.015), and quality of life (P=0.026). Syncope occurred with similar frequency in the two groups but was more frequently rated as serious in the iloprost group, although this adverse effect was not associated with clinical deterioration. CONCLUSIONS: Inhaled iloprost is an effective therapy for patients with severe pulmonary hypertension.
URI: 
ISSN: 0028-4793
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Pneumology
× corresponding author
# (joint) last author

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