Effectiveness of a novel semi-closed barrier device with a personalized exhaust in cough aerosol simulation according to particle counts and visualization of particles

Ryohei Matsui, Hiroshi Sasano, Takafumi Azami, Hisako Yano, Hiromi Yoshikawa, Yota Yamagishi, Takahiro Goshima, Yuka Miyazaki, Kazunori Imai, Marechika Tsubouchi, Yoichi Matsuo, Shuji Takiguchi, Tomonori Hattori

Research output: Contribution to journalArticlepeer-review

Abstract

Oxygen therapy is an essential treatment for patients with coronavirus disease 2019, although there is a risk of aerosolization of additional viral droplets occurring during this treatment that poses a danger to healthcare professionals. High-flow oxygen through nasal cannula (HFNC) is a vital treatment bridging low-flow oxygen therapy with tracheal intubation. Although many barrier devices (including devices without negative pressure in the barrier) have been reported in the literature, few barrier devices are suitable for HFNC and aerosol infection control procedures during HFNC have not yet been established. Hence, we built a single cough simulator model to examine the effectiveness of three protective measures (a semi-closed barrier device, a personalized exhaust, and surgical masks) administered in isolation as well as in combination using particle counter measurements and laser sheet visualization. We found that the addition of a personalized exhaust to a semi-closed barrier device reduced aerosol leakage during HFNC without negative pressure. This novel combination may thus reduce aerosol exposure during oxygen therapy, enhance the protection of healthcare workers, and likely reduce nosocomial infection risk.

Original languageEnglish
Article numbere12988
JournalIndoor Air
Volume32
Issue number2
DOIs
Publication statusPublished - 02-2022
Externally publishedYes

All Science Journal Classification (ASJC) codes

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

Fingerprint

Dive into the research topics of 'Effectiveness of a novel semi-closed barrier device with a personalized exhaust in cough aerosol simulation according to particle counts and visualization of particles'. Together they form a unique fingerprint.

Cite this