Finding F-0484

“The average of the particle concentration inside the room was 22.3 particle/cm3 and CO2 concentration was 2470 ppm.”

Particle and Carbon Dioxide Concentration Levels in a Surgical Room Conditioned with a Window/Wall (2020). International journal of environmental research and public health. Page 6. CKB 7696

Structure

Factor: Particulate matter (PM₂.₅ and PM₁₀)
Intervention: Air conditioning
Population: surgical staff and patients
Setting: operating room, BR
Study design: measurement of particle number concentration (0.3-10 μm) and CO2 in one surgical room with a window/wall air-conditioning system and the adjacent corridor in Brazil during a single surgery and two subsequent surgeries, with outdoor air ventilation calculated from CO2 and compared with the requirement (class 4)
Effect: mean 22.3
Averaging time: average over the monitored surgeries
Caveat: particle number concentration of the 0.3-10 μm fraction filed under particulate-matter

A Finding records what one published document states, verbatim and with its page. It is not a conclusion of Coridum; see the Claims that build on it.