Experimental comparison between general and local exhaust systems for aerosol and droplet particle removal in endoscopy rooms

This study compared the particle removal performance of an existing general exhaust system with a newly installed local exhaust system in a hospital endoscopy room. Overall, the local system reduced particle concentrations by 56%, showing greater effectiveness for smaller particles. For 0.3 µm particles, reductions during procedures such as Bronchoscopy, Esophagogastroduodenoscopy, and Upper endoscopy reached 70%, 73%, and 78%, respectively. The local exhaust system demonstrated superior particle control and showed potential to reduce the risk of infection in the evaluated environment.