Evaluation of infection risk by coughed air in hospital measurement of infection risk using the human cough simulation machine in a medical examination room

Toshiki Isahaya, Takashi Ito, Hitomi Tsutsumi, Fumihiko Shinoda, Shinichi Tanabe, Satoshi Hori, Shoichi Morimoto, Takao Ariga

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

    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 (CO2) as a tracer gas. The other was a "Thermal Manikin," which was used as a medical doctor. Eleven conditions were examined by varying the manikin positions, airflow patterns using a push-pull ventilation system (PPVS), and other conditions. For the evaluation of the infection risk, both CO2 concentration and the capture efficiency of CO2 were used. It was concluded that the PPVS influenced the decrease in the infection risk depending on the CO2 concentration and the capture efficiency. Further, it was revealed that the PPVS arrangement was an important concern.

    Original languageEnglish
    Title of host publication12th International Conference on Indoor Air Quality and Climate 2011
    Pages1878-1883
    Number of pages6
    Volume3
    Publication statusPublished - 2011
    Event12th International Conference on Indoor Air Quality and Climate 2011 - Austin, TX
    Duration: 2011 Jun 52011 Jun 10

    Other

    Other12th International Conference on Indoor Air Quality and Climate 2011
    CityAustin, TX
    Period11/6/511/6/10

    Fingerprint

    Ventilation
    Air
    Aerosols
    Carbon dioxide
    Gases
    Experiments
    Hot Temperature

    Keywords

    • Coughed rir
    • Hospital
    • Human rr
    • Infection risk
    • Measurement

    ASJC Scopus subject areas

    • Pollution

    Cite this

    Isahaya, T., Ito, T., Tsutsumi, H., Shinoda, F., Tanabe, S., Hori, S., ... Ariga, T. (2011). Evaluation of infection risk by coughed air in hospital measurement of infection risk using the human cough simulation machine in a medical examination room. In 12th International Conference on Indoor Air Quality and Climate 2011 (Vol. 3, pp. 1878-1883)

    Evaluation of infection risk by coughed air in hospital measurement of infection risk using the human cough simulation machine in a medical examination room. / Isahaya, Toshiki; Ito, Takashi; Tsutsumi, Hitomi; Shinoda, Fumihiko; Tanabe, Shinichi; Hori, Satoshi; Morimoto, Shoichi; Ariga, Takao.

    12th International Conference on Indoor Air Quality and Climate 2011. Vol. 3 2011. p. 1878-1883.

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

    Isahaya, T, Ito, T, Tsutsumi, H, Shinoda, F, Tanabe, S, Hori, S, Morimoto, S & Ariga, T 2011, Evaluation of infection risk by coughed air in hospital measurement of infection risk using the human cough simulation machine in a medical examination room. in 12th International Conference on Indoor Air Quality and Climate 2011. vol. 3, pp. 1878-1883, 12th International Conference on Indoor Air Quality and Climate 2011, Austin, TX, 11/6/5.
    Isahaya T, Ito T, Tsutsumi H, Shinoda F, Tanabe S, Hori S et al. Evaluation of infection risk by coughed air in hospital measurement of infection risk using the human cough simulation machine in a medical examination room. In 12th International Conference on Indoor Air Quality and Climate 2011. Vol. 3. 2011. p. 1878-1883
    Isahaya, Toshiki ; Ito, Takashi ; Tsutsumi, Hitomi ; Shinoda, Fumihiko ; Tanabe, Shinichi ; Hori, Satoshi ; Morimoto, Shoichi ; Ariga, Takao. / Evaluation of infection risk by coughed air in hospital measurement of infection risk using the human cough simulation machine in a medical examination room. 12th International Conference on Indoor Air Quality and Climate 2011. Vol. 3 2011. pp. 1878-1883
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    AU - Shinoda, Fumihiko

    AU - Tanabe, Shinichi

    AU - Hori, Satoshi

    AU - Morimoto, Shoichi

    AU - Ariga, Takao

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    AB - 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 (CO2) as a tracer gas. The other was a "Thermal Manikin," which was used as a medical doctor. Eleven conditions were examined by varying the manikin positions, airflow patterns using a push-pull ventilation system (PPVS), and other conditions. For the evaluation of the infection risk, both CO2 concentration and the capture efficiency of CO2 were used. It was concluded that the PPVS influenced the decrease in the infection risk depending on the CO2 concentration and the capture efficiency. Further, it was revealed that the PPVS arrangement was an important concern.

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