@article{oai:nagoya.repo.nii.ac.jp:02004234,
 author = {Ito, Takayasu and Okachi, Shotaro and Sato, Kazuhide and Yasui, Hirotoshi and Fukatsu, Noriaki and Ando, Masahiko and Chen‐Yoshikawa, Toyofumi Fengshi and Saka, Hideo},
 issue = {10},
 journal = {Respirology},
 month = {Oct},
 note = {Background and objective: Bronchoscopy is an airborne particle-generating procedure. However, few methods for safe bronchoscopy have been developed. To reduce airborne particles during bronchoscopy, we created an ‘e-mask’, which is a simple, disposable mask for patients. Our objective was to evaluate the e-mask's protective ability against airborne particles and to assess respiratory adverse events and complications. Methods: Patients with stage 2–4 chronic obstructive pulmonary disease were excluded. We performed visualization and quantifying experiments on airborne particles with and without the e-mask. We prospectively evaluated whether wearing the e-mask during bronchoscopy was associated with the incidence of patients requiring >5 L/min oxygen to maintain >90% oxygen saturation, and patients with >45 mm Hg end-tidal carbon dioxide (EtCO2) elevation, in addition to complications, compared to historical controls. Results: In the visualization experiment, more than ten thousand times of airborne particles were generated without the e-mask than with the e-mask. The volume of airborne particles was significantly reduced with the e-mask, compared to that without the e-mask (p = 0.011). Multivariate logistic regression analysis revealed that wearing the e-mask had no significant effect on the incidence of patients requiring >5 L/min oxygen to maintain >90% oxygen saturation, (p = 0.959); however, wearing the e-mask was a significant factor in >45 mm Hg EtCO2 elevation (p = 0.026). No significant differences in complications were observed between the e-mask and control groups (5.8% vs. 2.5%, p = 0.395). Conclusion: Wearing the e-mask during bronchoscopy significantly reduced the generation of airborne particles during bronchoscopy without increasing complications.},
 pages = {863--873},
 title = {Prevention of droplet dispersal with ‘e‐mask’: A new daily use endoscopic mask during bronchoscopy},
 volume = {27},
 year = {2022}
}