• Chung-Yen Chen, Ping-Hui Chen, Jia-Kun Chen, and Ta-Chen Su.
• Department of Environmental and Occupational Medicine, National Taiwan University Hospital Yunlin Branch, Taiwan; Department of Environmental and Occupational Medicine, National Taiwan University Hospital, Taiwan; Institute of Environmental and Occupational Health Sciences, College of Public Health, National Taiwan University, Taiwan.
• J Formos Med Assoc. 2023 Feb 1; 122 (2): 919791-97.

AbstractThis mini-review provides the practice guideline recommendations for ventilation of remodeled negative-pressure isolation wards for COVID-19 Patients. Remodeled "quasi-negative-pressure" isolation wards had been proved a feasible, inexpensive, safe, and effective measure to contain nosocomial outbreaks. We should first determine the minimum required ventilation volume of an isolation ward based on the severity of COVID-19 patients. Mechanical ventilation remains the mainstay for achieving the requirement, while the assistance of recirculation is also helpful. Beyond adequate ventilation volume, the "clean to less-clean" directional airflow remains the golden rule for the solution of indoor ventilation. The virus-laden exhaust should be treated with HEPA/UV device or be kept away from living organisms, buildings, and air inlets.Copyright © 2022 Formosan Medical Association. Published by Elsevier B.V. All rights reserved.

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