TY - JOUR T1 - Sildenafil is useful in pulmonary arterial hypertension JF - Thorax JO - Thorax SP - 176 LP - 176 DO - 10.1136/thx.2005.la0190 VL - 61 IS - 2 AU - R L Karadi Y1 - 2006/02/01 UR - http://thorax.bmj.com/content/61/2/176.abstract N2 - ▴ Galiè N, Ghofrani HA, Torbicki A, et al. Sildenafil citrate therapy for pulmonary arterial hypertension. N Engl J Med2005;353:2148–57OpenUrlCrossRefPubMedWeb of Science Many recent studies, most of them uncontrolled trials, suggest that sildenafil may be beneficial in the treatment of pulmonary arterial hypertension (PAH). A multicentre, double blind, placebo controlled study was performed in 278 patients with symptomatic PAH (either idiopathic, … ER -