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Acute exacerbation in interstitial lung disease.

Esam H Alhamad1, Joseph G Cal1, Nuha N Alrajhi1

  • 1Department of Medicine, Division of Pulmonary Medicine, College of Medicine, King Saud University, Riyadh, Saudi Arabia.

Annals of Thoracic Medicine
|May 20, 2021
PubMed
Summary

Acute exacerbation (AE) in interstitial lung disease (ILD) impacts survival. Non-idiopathic pulmonary fibrosis (IPF) ILD patients with AE have different characteristics and outcomes compared to AE-IPF patients, with AE being a significant risk factor for worsened prognosis.

Keywords:
6-min walk testacute exacerbationidiopathic pulmonary fibrosisinterstitial lung diseasesurvival

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Area of Science:

  • Pulmonology
  • Respiratory Medicine
  • Clinical Research

Background:

  • Limited information exists on acute exacerbations (AE) in interstitial lung disease (ILD) patients.
  • Understanding AE in ILD is crucial for improving patient outcomes.

Purpose of the Study:

  • To investigate the clinical features and prognosis of AE in patients with ILD.
  • To compare AE in idiopathic pulmonary fibrosis (IPF) and non-IPF ILD.

Main Methods:

  • Retrospective analysis of 667 ILD patients (463 non-IPF ILD, 204 IPF).
  • Data included pulmonary function tests, 6-minute walk tests, and right heart catheterization.
  • Cox regression models identified independent survival predictors.

Main Results:

  • AE occurred in 113 non-IPF ILD and 74 IPF patients.
  • Non-IPF ILD patients with AE were younger, predominantly female, and non-smokers compared to AE-IPF.
  • AE was associated with significantly reduced survival probabilities across ILD types, especially in AE-IPF.

Conclusions:

  • Non-IPF ILD patients experiencing AE exhibit distinct clinical profiles compared to AE-IPF patients.
  • Acute exacerbation is a significant independent risk factor for poorer outcomes in all ILD types.