Journal of the American College of Cardiology
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J. Am. Coll. Cardiol. · Aug 2012
Randomized Controlled Trial Multicenter StudyTadalafil for the treatment of pulmonary arterial hypertension: a double-blind 52-week uncontrolled extension study.
The aim of this study was to evaluate the long-term safety and durability of efficacy of tadalafil for pulmonary arterial hypertension. ⋯ Long-term treatment with tadalafil was well tolerated in patients with pulmonary arterial hypertension. In patients receiving either T20 mg or T40 mg, the improvements in 6MWD demonstrated in the 16-week PHIRST study appeared sustained for up to 52 additional weeks of treatment in PHIRST-2. (Pulmonary Arterial Hypertension and Response to Tadalafil Study; NCT00549302).