title: [Selective vasodilation in the lung. Sildenafil improves physical capacity and prognosis].
mesh_terms: D005080:Exercise Test / Q000187:drug effects*; D006801:Humans; D006976:Hypertension, Pulmonary / Q000188:drug therapy* / Q000401:mortality; D010879:Piperazines / Q000627:therapeutic use*; D011379:Prognosis; D011687:Purines / Q000627:therapeutic use; D000068677:Sildenafil Citrate; D013450:Sulfones / Q000627:therapeutic use*; D016019:Survival Analysis; D014665:Vasodilator Agents / Q000627:therapeutic use*
chemical_list: D010879:Piperazines; D011687:Purines; D013450:Sulfones; D014665:Vasodilator Agents; D000068677:Sildenafil Citrate