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04:44
Imaging Features of Systemic Sclerosis-Associated Interstitial Lung Disease
Published on: June 16, 2020
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Clinical Features Associated With Fatigue in People With Fibrotic Interstitial Lung Disease: Cross-Sectional Study
Shohei Kawachi1,2, Mariana Hoffman1,3, Anne E Holland1,3,4
1Respiratory Research@Alfred, School of Translational Medicine, Monash University, Melbourne, Victoria, Australia.
Respirology (Carlton, Vic.)
|July 21, 2025
Summary
Fatigue in fibrosing interstitial lung diseases (fILD) is linked to breathlessness and reduced physical activity, not oxygen levels. Understanding these factors can improve quality of life for fILD patients.
Area of Science:
- Pulmonary Medicine
- Respiratory Research
- Clinical Investigation
Background:
- Fatigue significantly impairs quality of life in patients with fibrosing interstitial lung diseases (fILD).
- The contribution of oxyhaemoglobin desaturation to fatigue in fILD is not well understood, unlike in chronic obstructive pulmonary disease.
- This study investigated the relationship between fatigue and various clinical factors in fILD.
Purpose of the Study:
- To determine the association between fatigue and clinical features in patients with stable fILD.
- To investigate the role of oxyhaemoglobin desaturation in contributing to fatigue in fILD.
- To identify key factors influencing fatigue severity in fILD.
Main Methods:
- 116 participants with stable fILD and exertional desaturation were included.
- Fatigue Severity Scale (FSS) assessed fatigue; independent variables included age, BMI, FVC%, Dyspnoea-12 score, daily steps, nadir SpO2, corticosteroid use, and obstructive sleep apnea.
- Univariate and multivariate regression analyses were performed to identify associations.
Main Results:
- 62% of participants reported substantial fatigue (FSS ≥ 36).
- No significant relationship was found between fatigue (FSS) and nadir SpO2 during the 6-minute walk test or daily life.
- Higher fatigue scores correlated with increased breathlessness (Dyspnoea-12) and decreased daily physical activity (steps).
Conclusions:
- Fatigue in fILD is primarily associated with breathlessness and reduced physical activity.
- Exertional oxyhaemoglobin desaturation does not appear to be a significant contributor to fatigue in this patient group.
- Findings suggest focusing on managing dyspnea and promoting physical activity to alleviate fatigue in fILD.
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