Short-term Effects of Supplemental Oxygen in Patients With IPF

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

53 participants

Study Classification

INTERVENTIONAL

Study Start Date

2016-11-30

Study Completion Date

2018-03-31

Brief Summary

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Although exercise-induced desaturation is frequently observed in patients with idiopathic pulmonary fibrosis (IPF) short-term effects of supplemental oxygen during walking have not been investigated yet. Given, that walking ability is the most important activity of daily life, the aim of our study is to investigate the effects of supplemental oxygen on endurance walking capacity in hypoxemic IPF patients. In this study patients will perform 3 endurance shuttle walk tests (ESWTs) at 85% of their individual peak performance using medical air (=compressed room air, 2 liters/minute), 2 liters/minute oxygen, 4 liters/minute Oxygen in a double-blinded fashion and random order.

Since there are only limited pharmacological treatment options for IPF patients, this study may help to provide novel information about the short-term effects of supplemental oxygen. Furthermore it may help to investigate possibilities to optimize oxygen therapy in order to facilitate patients´ participation in activities of daily life and not at least to improve patients´ quality of life.

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Detailed Description

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Rationale:

Exercise-induced desaturation is frequently observed in patients with idiopathic pulmonary fibrosis and predicts poorer outcomes. However, prospective studies with larger sample sizes and those investigating the effect of oxygen on endurance time, oxygen saturation and breathing frequency during walking are lacking. Given that walking is the most important activity of daily life to preserve the maintenance and to participate in social life, we aim to investigate the effects of supplemental oxygen during walking in IPF patients.

The endurance shuttle walk test (ESWT) is a well validated test with high reliability and validity for measuring endurance walking capacity in patients with chronic obstructive pulmonary disease (COPD). The advantage of this test in contrast to the 6-minute walk test is that the ESWT is performed at 85% of the individual maximum that is close to the intensity of typical daily activities. Additionally, by using the ESWT it is possible to determine the maximum duration of exercise and to compare values at isotime (= time point when the shortest of the 3 ESWTs ends), whereas values at the end of different six-minute walk tests (6MWTs) are not comparable in case of different distances.

Aim:

To investigate the short-term effects of supplemental oxygen on endurance capacity during walking (ESWT) in patients with idiopathic pulmonary fibrosis.

Design:

This study is a randomized, controlled, double-blinded cross-over trial. Following an initial incremental shuttle walk test (ISWT) in order to determine the individual maximum walking capacity, patients will perform 3 endurance shuttle walk tests (ESWT) at 85% of the maximal pace. In randomized order, patients will complete one ESWT on 2l/min oxygen, one on 4l/min oxygen and one on medical air (=compressed room air), whereas the patients as well as the investigator will be blinded to the gas mixture provided. All 3 conditions will be provided via nasal cannula. The time between the two ESWTs will be 24 hours in order to give enough time for regeneration. Endurance Walking capacity as measured by the ESWT will be used as the primary outcome.