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Plos One : Pulmonary Hypertension in Patients with Idiopathic Pulmonary Fibrosis – the Predictive Value of Exercise Capacity and Gas Exchange Efficiency, Volume 8

By West, James

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Book Id: WPLBN0003965478
Format Type: PDF eBook :
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Reproduction Date: 2015

Title: Plos One : Pulmonary Hypertension in Patients with Idiopathic Pulmonary Fibrosis – the Predictive Value of Exercise Capacity and Gas Exchange Efficiency, Volume 8  
Author: West, James
Volume: Volume 8
Language: English
Subject: Journals, Science, Medical Science
Collections: Periodicals: Journal and Magazine Collection (Contemporary)
Historic
Publication Date:
Publisher: Plos

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West, J. (n.d.). Plos One : Pulmonary Hypertension in Patients with Idiopathic Pulmonary Fibrosis – the Predictive Value of Exercise Capacity and Gas Exchange Efficiency, Volume 8. Retrieved from http://members.worldlibrary.net/


Description
Description : Exercise capacity and survival of patients with IPF is potentially impaired by pulmonary hypertension. This study aims to investigate diagnostic and prognostic properties of gas exchange during exercise and lung function in IPF patients with or without pulmonary hypertension. In a multicentre setting, patients with IPF underwent right heart catheterization, cardiopulmonary exercise and lung function testing during their initial evaluation. Mortality follow up was evaluated. Seventy-three of 135 patients [82 males: median age of 64 (56: 72 years)] with IPF had pulmonary hypertension as assessed by right heart catheterization [median mean pulmonary arterial pressure 34 (27: 43) mmHg]. The presence of pulmonary hypertension was best predicted by gas exchange efficiency for carbon dioxide (cut off $152% predicted: area under the curve 0.94) and peak oxygen uptake (#56% predicted: 0.83), followed by diffusing capacity. Resting lung volumes did not predict pulmonary hypertension. Survival was best predicted by the presence of pulmonary hypertension, followed by peak oxygen uptake [HR 0.96 (0.93: 0.98)]. Pulmonary hypertension in IPF patients is best predicted by gas exchange efficiency during exercise and peak oxygen uptake. In addition to invasively measured pulmonary arterial pressure, oxygen uptake at peak exercise predicts survival in this patient population.

 

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