competing studies did not allow enrollment

Pulmonary Arterial Hypertension (PAH) in the setting of Idiopathic Pulmonary Fibrosis(IPF)is a risk factor for morbidity and mortality in the peri-lung transplant(LT) setting. Currently there is no significant data to support the use of pulmonary vasodilators for PAH in the setting of interstitial lung disease such as IPF. The majority of IPF patients have PAH either at rest or during exercise. The study hypothesis is that bosentan may improve morbidity and mortality in the peri-LT setting in both IPF cohorts with either resting or exercise PAH.

The purpose of this study was to evaluate bosentan in the setting of exercise or resting pulmonary hypertension in patients with underlying pulmonary fibrosis.

Inclusion Criteria:

• Idiopathic Pulmonary Fibrosis referred for lung transplantation
• Minimum 50 meter 6 minute walk distance
• No significant underlying liver disease

Exclusion Criteria:

• Significant liver disease or cirrhosis
• non ambulatory
• previous adverse reaction/allergy to Bosentan