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Lung function in primary Sjögren's syndrome: a cross sectional and longitudinal study
1Department of Rheumatology, Royal Victoria Infirmary, Newcastle upon Tyne.
Thorax
|March 1, 1991
Summary
Primary Sjögren's syndrome can present with early lung disease, affecting lung function measures like forced expiratory volume in one second (FEV1) and vital capacity (VC). This condition may worsen over time, highlighting the need for monitoring respiratory health.
Area of Science:
- Pulmonary Medicine
- Rheumatology
- Autoimmune Diseases
Background:
- Primary Sjögren's syndrome is an autoimmune disorder primarily affecting exocrine glands.
- Pulmonary involvement is a recognized, though often underdiagnosed, complication of primary Sjögren's syndrome.
Purpose of the Study:
- To assess the prevalence and progression of lung disease in patients with primary Sjögren's syndrome.
- To correlate lung function abnormalities with clinical symptoms and diagnostic markers.
Main Methods:
- Clinical, radiological, and pulmonary function tests (spirometry, TLCO) were performed on 100 primary Sjögren's syndrome patients at diagnosis.
- A subgroup of 30 patients underwent repeat testing after a mean of four years.
- Pulmonary symptoms, physical signs, chest radiographs, and lip biopsy results were analyzed.
Main Results:
- At initial assessment, 24% of patients showed significant reductions in FEV1, VC, or TLCO.
- Lung function decline correlated with pulmonary symptoms and positive lip biopsy results.
- Over four years, the subgroup showed increased symptoms and a higher incidence of reduced lung function.
Conclusions:
- Lung disease is an early and potentially progressive feature of primary Sjögren's syndrome.
- Regular pulmonary function monitoring is crucial for early detection and management.
- Pulmonary involvement necessitates a multidisciplinary approach in managing primary Sjögren's syndrome.