Evaluation of infection risk by coughed air in a medical examination room: Part 1. Measurement of infection risk using tracer gas

Shinichi Tanabe, Takashi Ito, Toshiki Isahaya, Hitomi Tsutsumi, Nobuhiro Hirasuga, Hitomi Takeuchi, Motohiko Iwase, Satoshi Hori, Shoichi Morimoto, Takao Ariga

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    1 Citation (Scopus)

    Abstract

    The objective of this research is to evaluate the infection risk by the aerosol dispersion due to human cough in a medical examination room. The experiments were conducted in a full-scale test room simulated as a medical examination room. Two types of manikins were employed. One was a "Coughing Manikin," which could simulate human cough airflow using carbon dioxide (CO 2) as a tracer gas. The other was a "Thermal Manikin," which was used as a medical doctor. The thermoregulation and the breathing operation of this manikin were controlled. Seventeen conditions were examined by varying the manikin positions, airflow patterns using a push-pull ventilation system (PPVS), and other conditions. Fo r the evaluation of the infection risk, both CO 2 concentration in Thermal Manikin's breathing area and the capture efficiency of CO 2 were used. The capture efficiency was defined as the ratio of the amount of PPVS-collected CO 2 within two minutes to the total amount of CO 2 that was exchanged by Coughing Manikin. It was concluded that the PPVS influenced the decrease in the infection risk depending on the CO 2 concentration and the capture efficiency. Further, it was revealed that the PPVS arrangement is an important concern.

    Original languageEnglish
    Title of host publicationIAQ Conference
    Publication statusPublished - 2011
    EventAirborne Infection Control - Ventilation, IAQ, and Energy Conference, IAQ 2010 - Kuala Lumpur, Malaysia
    Duration: 2010 Nov 102010 Nov 12

    Other

    OtherAirborne Infection Control - Ventilation, IAQ, and Energy Conference, IAQ 2010
    CountryMalaysia
    CityKuala Lumpur
    Period10/11/1010/11/12

    Fingerprint

    Manikins
    Ventilation
    Carbon Monoxide
    Gases
    Air
    Infection
    Cough
    Respiration
    Aerosols
    Hot Temperature
    Carbon dioxide
    Body Temperature Regulation
    Carbon Dioxide
    Experiments
    Research

    ASJC Scopus subject areas

    • Building and Construction
    • Environmental Engineering
    • Public Health, Environmental and Occupational Health

    Cite this

    Tanabe, S., Ito, T., Isahaya, T., Tsutsumi, H., Hirasuga, N., Takeuchi, H., ... Ariga, T. (2011). Evaluation of infection risk by coughed air in a medical examination room: Part 1. Measurement of infection risk using tracer gas. In IAQ Conference

    Evaluation of infection risk by coughed air in a medical examination room : Part 1. Measurement of infection risk using tracer gas. / Tanabe, Shinichi; Ito, Takashi; Isahaya, Toshiki; Tsutsumi, Hitomi; Hirasuga, Nobuhiro; Takeuchi, Hitomi; Iwase, Motohiko; Hori, Satoshi; Morimoto, Shoichi; Ariga, Takao.

    IAQ Conference. 2011.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Tanabe, S, Ito, T, Isahaya, T, Tsutsumi, H, Hirasuga, N, Takeuchi, H, Iwase, M, Hori, S, Morimoto, S & Ariga, T 2011, Evaluation of infection risk by coughed air in a medical examination room: Part 1. Measurement of infection risk using tracer gas. in IAQ Conference. Airborne Infection Control - Ventilation, IAQ, and Energy Conference, IAQ 2010, Kuala Lumpur, Malaysia, 10/11/10.
    Tanabe, Shinichi ; Ito, Takashi ; Isahaya, Toshiki ; Tsutsumi, Hitomi ; Hirasuga, Nobuhiro ; Takeuchi, Hitomi ; Iwase, Motohiko ; Hori, Satoshi ; Morimoto, Shoichi ; Ariga, Takao. / Evaluation of infection risk by coughed air in a medical examination room : Part 1. Measurement of infection risk using tracer gas. IAQ Conference. 2011.
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    AU - Ito, Takashi

    AU - Isahaya, Toshiki

    AU - Tsutsumi, Hitomi

    AU - Hirasuga, Nobuhiro

    AU - Takeuchi, Hitomi

    AU - Iwase, Motohiko

    AU - Hori, Satoshi

    AU - Morimoto, Shoichi

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