title: Long term combination treatment for severe idiopathic pulmonary arterial hypertension.
abstract: We report the long-term follow-up of 3 cases of severe idiopathic pulmonary arterial hypertension, in whom tadalafil plus sitaxentan combination therapy improved the clinical condition and exercise performance without any relevant adverse event.
authors.affiliation: Flora Affuso, Plinio Cirillo, Antonio Ruvolo, Guido Carlomagno, Serafino Fazio, Department of Internal Medicine, Cardiovascular and Immunologic Sciences, University of Naples Federico II School of Medicine, via S. Pansini 5, 80131 Naples, Italy.
authors.forename: Flora
authors.initials: F
authors.lastname: Affuso
authors.forename: Plinio
authors.initials: P
authors.lastname: Cirillo
authors.forename: Antonio
authors.initials: A
authors.lastname: Ruvolo
authors.forename: Guido
authors.initials: G
authors.lastname: Carlomagno
authors.forename: Serafino
authors.initials: S
authors.lastname: Fazio