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Related Experiment Videos

Screening test for airflow limitation

D J Scheinhorn

    Southern Medical Journal
    |April 1, 1982
    PubMed
    Summary
    This summary is machine-generated.

    Forced expiratory time (FET) can be a useful self-test for airflow limitation. This simple test, requiring only written instructions, shows significant correlation with spirometry, suggesting its potential for widespread screening.

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    Area of Science:

    • Pulmonary Medicine
    • Respiratory Physiology

    Background:

    • Airflow limitation is a key indicator of respiratory disease.
    • Traditional spirometry requires trained personnel and equipment.
    • A simple, self-administered test for airflow limitation is needed.

    Purpose of the Study:

    • To evaluate Forced Expiratory Time (FET) as a self-administered test for airflow limitation.
    • To compare self-measured FET with standard spirometric measurements.

    Main Methods:

    • 180 subjects self-measured FET using only written instructions.
    • FET results were compared with standard spirometric measurements.
    • Subjects' understanding and effort were assessed via coached spirograms.

    Main Results:

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    • A significant correlation was found between self-measured FET and spirometric airflow limitation.
    • An FET exceeding five seconds was significantly associated with spirometric abnormality.
    • The FET self-test demonstrated adequate sensitivity, missing limitation in 9% and misclassifying 14%.

    Conclusions:

    • Forced Expiratory Time (FET) shows promise as a sensitive, self-administered screening tool for airflow limitation.
    • The test's simplicity and lack of equipment requirements support its potential for field trials.
    • FET can be reliably performed by subjects with only written instructions.