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, Shin Ichi 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
Publication statusPublished - 2011 Dec 1
Event12th International Conference on Indoor Air Quality and Climate 2011 - Austin, TX, United States
Duration: 2011 Jun 52011 Jun 10

Publication series

Name12th International Conference on Indoor Air Quality and Climate 2011
Volume3

Conference

Conference12th International Conference on Indoor Air Quality and Climate 2011
CountryUnited States
CityAustin, TX
Period11/6/511/6/10

Keywords

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

ASJC Scopus subject areas

  • Pollution

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  • Cite this

    Isahaya, T., Ito, T., Tsutsumi, H., Shinoda, F., Tanabe, S. I., 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 (pp. 1878-1883). (12th International Conference on Indoor Air Quality and Climate 2011; Vol. 3).