Abstract
Prostanoids are a well-established therapy for pulmonary arterial hypertension (PAH), and observational studies suggest their efficacy even in chronic thromboembolic pulmonary hypertension (CTEPH) patients. To compare the effects of 6 months of treatment with beraprost, an orally-active prostacyclin analog, in patients with distal CTEPH and PAH. Case-control study. Sixteen patients with severe pulmonary hypertension (NYHA II-IV), eight with distal CTEPH matched with eight patients with idiopathic PAH for similar effort tolerance. All patients were in stable clinical and hemodynamic condition for 3 months with maximal standard therapy. During the titration phase (4 weeks) beraprost was increased to maximal tolerated dose (mean daily dosage: CTEPH 275 +/- 47 microg, PAH 277 +/- 47 microg) in adjunction of standard therapy, patients were followed-up for 6 months. World Heart Organization (WHO) functional class, exercise capacity measured by distance walked in 6 min, and systolic pulmonary pressure (echocardiography), were evaluated at baseline, and at 1-, 3- and 6-month interval. At 6 months WHO class decreased significantly in both groups (CTEPH from 2.7 +/- 0.6 to 2.0 +/- 0.24, p < 0.05; PAH from 3.0 +/- 0.26 to 2.1 +/- 0.25, p ...Continue Reading
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