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Chinese Journal of Lung Diseases(Electronic Edition) ›› 2024, Vol. 17 ›› Issue (05): 738-743. doi: 10.3877/cma.j.issn.1674-6902.2024.05.012

• Original articles • Previous Articles    

Clinical analysis of interstitial lung disease associated with connective tissue disease complicated with small airway dysfunction

Shasha Yang1,2, Maowei Zhang3, Yitian Sun3, Yanan Liu3, Juan Wei4, Jian Wei2, Bi Chen3,()   

  1. 1.Department of Respiratory and Critical Care Medicine, Affiliated Hospital of Xuzhou Medical University, Xuzhou 221002, China
    2.Department of Respiratory and Critical Care Medicine, Fengxian People′s Hospital, Fengxian 221700, China
    3.Department of Respiratory and Critical Care Medicine, Affiliated Hospital of Xuzhou Medical University, Xuzhou 221002, China;
    4.Department of Respiratory and Critical Care Medicine, Suining County People′s Hospital, Suining 221200, China
  • Received:2024-04-17 Online:2024-10-25 Published:2024-12-03
  • Contact: Bi Chen

Abstract:

Objective

To analyze the clinical features, imaging patterns and pulmonary function of connective tissue disease-associated interstitial lung disease (CTD-ILD) complicated with small airway dysfunction.

Methods

All of 245 cases of CTD-ILD patients admitted to our hospital from January 2020 to June 2023 were selected. 86 cases of CTD-ILD complicated with small airway dysfunction (SAD) were treated as the observation group and 159 cases without SAD as the control group. The baseline data, radiographic characteristics and pulmonary function of the two groups were compared.

Results

In the observation group,14 cases of sjogren′s syndrome (48.28%), 3 cases of systemic lupus erythematosus (37.50%), 5 cases of systemic vasculitis (38.46%) and 17 cases of overlapping syndrome (36.96%) were less than those in the control group (15 cases of Sjogren′s syndrome (51.72%)). There were 5 cases of systemic lupus erythematosus(62.50%), 8 cases of systemic vasculitis (61.54%) and 29 cases of overlap syndrome (63.04%). There was no significant difference in age, sex and body mass index between the two groups (P>0.05). In the observation group, 15 cases of pulmonary hypertension (17.44%) were higher than that in the control group (8.81%), 3 cases of coronary heart disease (3.49%) and 2 cases of cerebral infarction (2.33%) were lower than that i 17 cases of coronary heart disease (10.69%) and 26 cases of cerebral infarction (16.35%) n the control group(P<0.05). 84 cases of nonspecific interstitial pneumonia (NSIP) in the control group (52.83%) were higher than 32 cases of NSIP in the observation group (37.21%) (P>0.05). In the observation group, forced vital capacity (FVC) accounted for (72.60±19.30)% and forced expiratory volume in one second FEV1% accounted for (68.38±16.35)%, FEV1/FVC(78.94±7.80) and diffusing capacity of the lungs for carbon dioxide of expected monoxide (DLCO) (47.28±16.93)% is lower than that of control group (87.14±19.47)%, (91.56±19.13)%, (87.25±5.21),(57.03±17.11)%. The residual total ratio (RV/TLC) in the observation group was 43.00(38.00,47.25) higher than that in the control group 39.00(35.00,43.00) (P<0.05). The stages of interstitial lung disease-gender-age-physiology (ILD-GAP) were observed.

Conclusion

CTD-ILD patients with systemic lupus erythematosus, Sjogren′s syndrome, systemic vasculitis and overlapping syndrome are prone to SAD, pulmonary hypertension, poor pulmonary function index and high ILD-GAP stage.

Key words: Interstitial lung disease, Connective tissue diseases, Small airway dysfunction, Lung function, Image typing, Interstitial lung disease-Sex-Age-Physiological stage

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