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Related Experiment Videos

Functional parameters in pulmonary bullous emphysema.

V Hodgev1, S Kostianev, G Hadgigeorgiev

  • 1Dept. Pneumology, Higher Medical Institute, Plovdiv, Bulgaria.

Folia Medica
|August 27, 1999
PubMed
Summary

Patients with bullous emphysema exhibit significantly lower lung function and BMI compared to nonbullous emphysema. High-resolution computed tomography (HRCT) is more effective than chest radiographs (CXR) for assessing bullous emphysema.

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Area of Science:

  • Pulmonology
  • Radiology
  • Respiratory Medicine

Background:

  • Emphysema is a chronic obstructive pulmonary disease (COPD) characterized by alveolar destruction.
  • Bullous emphysema, a subtype, involves the formation of bullae, which can impact lung function.
  • Accurate assessment of emphysema subtypes is crucial for effective patient management.

Purpose of the Study:

  • To compare functional parameters between patients with bullous emphysema and nonbullous emphysema.
  • To evaluate the diagnostic utility of chest radiographs (CXR) versus high-resolution computed tomography (HRCT) in assessing bullous emphysema.

Main Methods:

  • 43 stable COPD patients were categorized into bullous (n=19) and nonbullous (n=24) emphysema groups based on HRCT findings.
  • Functional parameters including FEV1, VC, BMI, dyspnea score, and smoking history were assessed.

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  • Chest radiographs were independently interpreted by three radiologists without knowledge of CT data.

    • Main Results:

    • Patients with bullous emphysema showed significantly lower FEV1, VC, FEV1/VC%, and BMI compared to nonbullous emphysema.
    • Bullous emphysema patients had higher pack-year smoking history and greater dyspnea after a 6-minute walk distance (6MWD).
    • The sensitivity of CXR for detecting small bullae (<15 mm) was low, ranging from 12.3% to 27.7%.

    Conclusions:

    • Bullous emphysema is associated with poorer lung function indices and lower BMI.
    • Higher smoking burden and increased dyspnea are characteristic of bullous emphysema.
    • HRCT provides more valuable information for evaluating emphysema than standard CXR.