TY - JOUR T1 - Sildenafil does not improve 6 min walk distance in advanced idiopathic pulmonary fibrosis JF - Thorax JO - Thorax SP - 239 LP - 239 DO - 10.1136/thx.2010.145664 VL - 66 IS - 3 AU - M Lavender Y1 - 2011/03/01 UR - http://thorax.bmj.com/content/66/3/239.abstract N2 - It has been postulated that sildenafil, a phosphodiesterase-5 inhibitor and pulmonary artery vasodilator, may improve gas exchange in advanced idiopathic pulmonary fibrosis by preferentially increasing perfusion to well-ventilated areas of lung. This double-blind randomised placebo controlled study was designed to investigate the effect of sildenafil on 6 min walk distance (6MWD) in patients with advanced idiopathic … ER -