A small airway pressure sensor for humans.

H. Ozawa, Y. Sugiyama, M. Yanai, K. Sekizawa, T. Ohrui, H. Sasaki, T. Takishima

    Research output: Contribution to journalArticlepeer-review


    We developed a small airway pressure sensor for humans. This sensor catheter was introduced to the right lower lobe bronchus through a fiberoptic bronchoscope until the tip was wedged, at which point the bronchoscope was removed. We measured small airway pressure using this sensor. Simultaneously, we measured mouth flow, mouth pressure and transpulmonary pressure by the esophageal balloon technique during tidal breathing. The present method is called an anterograde method. By this method, we obtained central airway resistance and peripheral airway resistance. A significant increase in peripheral airway resistance, compared to normal subjects, has been confirmed as a symptom of chronic obstructive pulmonary disease.

    Original languageEnglish
    Pages (from-to)177-184
    Number of pages8
    JournalFrontiers of medical and biological engineering : the international journal of the Japan Society of Medical Electronics and Biological Engineering
    Issue number3
    Publication statusPublished - 1991

    ASJC Scopus subject areas

    • Biophysics


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