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Related Experiment Videos

Collateral ventilation in excised human lungs.

D E Rosenberg, H A Lyons

    Respiration; International Review of Thoracic Diseases
    |January 1, 1979
    PubMed
    Summary

    Collateral ventilation, the lung

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    Area of Science:

    • Pulmonary Physiology
    • Respiratory Medicine

    Background:

    • Collateral ventilation facilitates gas exchange in the lungs.
    • Understanding collateral pathways is crucial for diagnosing and treating lung diseases.

    Purpose of the Study:

    • To investigate the presence and characteristics of collateral ventilation in human lungs.
    • To determine the role of alveolar pores in collateral pathways.

    Main Methods:

    • Postmortem examination of 13 human lungs with varying pathologies.
    • Assessment of collateral flow and resistance using 133Xe and radiographic imaging.
    • Histological analysis with tantalum particles to visualize collateral pathways.

    Main Results:

    • Collateral ventilation varied with lung pathology.
    • Alveolar pores were identified as key collateral pathways.
    • No collateral flow was observed in pediatric lungs, suggesting it's an acquired trait.

    Conclusions:

    • Alveolar pores are significant in human collateral ventilation.
    • Collateral ventilation appears to be an acquired phenomenon, not congenital.

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