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[Reference values for the inhomogeneity parameter V2/V1].

P O Willroth, G Zimmermann

    Zeitschrift Fur Erkrankungen Der Atmungsorgane
    |January 1, 1984
    PubMed
    Summary
    This summary is machine-generated.

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    This study determined the V2/V1 parameter from flow-volume loops in 1,169 healthy individuals to estimate unequal ventilation. Reference values and prediction equations for V2/V1 are now available for clinical use.

    Area of Science:

    • Pulmonary Physiology
    • Respiratory Medicine

    Context:

    • Assessing lung function is crucial for diagnosing respiratory diseases.
    • Unequal ventilation can be an early indicator of pulmonary dysfunction.
    • Standardized reference values are needed for accurate interpretation of spirometry data.

    Purpose:

    • To establish reference values for the V2/V1 parameter derived from the flow-volume loop.
    • To develop prediction equations for the V2/V1 parameter in a healthy population.
    • To facilitate the estimation of unequal ventilation using the Pneumotest spirometer.

    Summary:

    • The V2/V1 parameter was measured in 1,169 healthy subjects (821 males, 348 females) aged 15-70 years.
    • Measurements were performed using the electronic spirometer Pneumotest.

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  • The study reports reference values and prediction equations for V2/V1, a marker of unequal ventilation.

    • Impact:

    • Provides normative data for the V2/V1 parameter, aiding in the early detection of ventilation inequalities.
    • Enhances the clinical utility of the Pneumotest spirometer for respiratory assessments.
    • Contributes to a better understanding of lung function variability in healthy individuals.