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Lung function in patients with systemic lupus erythematosus and persistent chest symptoms
H Jonsson1, O Nived, G Sturfelt
1Department of Rheumatology, University Hospital, Lund, Sweden.
British Journal of Rheumatology
|December 1, 1989
Summary
Systemic lupus erythematosus (SLE) patients with chest symptoms showed moderate lung function decline. Irreversible pulmonary damage appears uncommon in SLE, suggesting better long-term lung health outcomes.
Area of Science:
- Pulmonary Medicine
- Rheumatology
- Cardiology
Background:
- Systemic lupus erythematosus (SLE) can affect multiple organs, including the lungs.
- Chest symptoms are common in SLE patients, necessitating investigation into pulmonary involvement.
- Understanding the extent and nature of pulmonary dysfunction in SLE is crucial for patient management.
Purpose of the Study:
- To investigate pulmonary function and hemodynamics in SLE patients with persistent chest symptoms.
- To assess the prevalence and characteristics of lung abnormalities in this cohort.
- To determine the contribution of non-respiratory factors to reduced exercise capacity.
Main Methods:
- Spirometry, lung mechanics, and diffusion capacity testing.
- Exercise testing and single breath CO2 (SBT-CO2) test.
- Right heart catheterization and perfusion scintigraphy.
Main Results:
- Mild reductions in vital capacity and FEV1 were observed.
- SBT-CO2 revealed ventilation-perfusion mismatch in 50% of patients.
- Non-respiratory factors significantly limited working capacity; pulmonary hypertension identified in 2 patients.
Conclusions:
- Pulmonary function abnormalities in SLE patients with chest symptoms are generally moderate.
- Ventilation-perfusion mismatch and pulmonary hypertension can occur but may not be widespread.
- Irreversible pulmonary damage seems uncommon in SLE, indicating a potentially favorable prognosis for lung health.