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[Planimetric determination of lung volume--a complement to spirometry].

M Bieber, H J Maurer

    Rofo : Fortschritte Auf Dem Gebiete Der Rontgenstrahlen Und Der Nuklearmedizin
    |March 1, 1984
    PubMed
    Summary

    Digital planimetry offers a valuable method for measuring total lung volume, complementing traditional spirometry. This technique reveals lung volume increases after age 60, particularly in emphysema patients.

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    Area of Science:

    • Pulmonary Medicine
    • Medical Imaging

    Background:

    • Emphysema significantly impacts lung volume and function.
    • Spirometry is a standard tool for assessing lung function, but may have limitations in older adults.
    • Accurate lung volume measurement is crucial for diagnosing and managing respiratory conditions.

    Purpose of the Study:

    • To evaluate digital planimetry as a method for determining total lung volume.
    • To compare digital planimetry findings with spirometric measurements in patients with emphysema and healthy controls.
    • To investigate the relationship between lung volume, age, and emphysema prevalence.

    Main Methods:

    • Digital planimetry was used to measure total lung volume in 102 emphysema patients and 33 controls (aged 30-79).
    • Results were compared with standard spirometric measurements.
    • Statistical analysis explored relationships between lung volume, age, body size, and body surface area.

    Main Results:

    • Mean lung volume showed significant correlations with age, body size, and body surface area.
    • Planimetrically determined lung volume did not exhibit a linear increase with age but rose after 60 years.
    • Spirometric findings declined in individuals over 60, coinciding with increased emphysema prevalence.

    Conclusions:

    • Digital planimetry is a valuable tool for assessing total lung volume, serving as a useful adjunct to spirometry.
    • The study highlights age-related changes in lung volume and the increased prevalence of emphysema in older populations.
    • Digital planimetry provides objective lung volume data that complements functional assessments from spirometry.

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