Sildenafil May Be Effective for Pulmonary Arterial Hypertension

"Sildenafil citrate produced significant improvement in six-minute walk test results of patients with pulmonary arterial hypertension (PAH), according to a randomized, placebo-controlled study presented here during a late-breaking clinical trials session at CHEST 2004, the 70th annual meeting of the American College of Chest Physicians."