Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Experimental analysis of airborne contaminant distribution in an operating room with different ventilation schemes
https://orcid.org/0000-0003-1031-0662
https://orcid.org/0000-0003-0165-2900
Abstract Experimental and numerical investigations were performed in a research operating room to compare laminar air flow and turbulent mixing ventilation systems in reducing the concentrations of airborne germs and surgical smoke in operating room air. In addition, measurements at scattered positions were conducted to find positions that are suited best for airborne monitoring in real-time during surgeries. In the experiments, particle counters were used to sample tracer aerosols originating from the wound area and the facial area of the thermal manikins representing surgical staff. The results showed that it is important to perform monitoring close to the areas with high hygiene requirements. Increasing the air change rate with turbulent mixing ventilation significantly reduced the number of airborne particles, however, not in the surgical microenvironment. Our findings show varying results considering the particle concentration using laminar air flow compared to turbulent mixing ventilation. With laminar air flow, higher contaminant levels are obtained in the areas with a high demand for contamination reduction. In contrast, laminar air flow was more effective in reducing the concentration of surgical smoke in the facial areas of the surgical staff. Regarding airborne germs, monitoring should be performed at the instrument tables and close to the wound area to evaluate the risk for surgical side infections. These results can support the development of guidelines and best practices for operating room ventilation design and maintenance to improve patient safety and reduce the risk of healthcare-associated infections.
Highlights OR air flow studied through experimental and numerical analysis. Germs and smoke spread in realistic OR conditions examined. LAF led to higher concentrations of airborne germs above the wound area. No negative link found between ACR and particle concentration. Live monitoring of airborne contaminations should be close to the protected areas.
Experimental analysis of airborne contaminant distribution in an operating room with different ventilation schemes
https://orcid.org/0000-0003-1031-0662
https://orcid.org/0000-0003-0165-2900
Abstract Experimental and numerical investigations were performed in a research operating room to compare laminar air flow and turbulent mixing ventilation systems in reducing the concentrations of airborne germs and surgical smoke in operating room air. In addition, measurements at scattered positions were conducted to find positions that are suited best for airborne monitoring in real-time during surgeries. In the experiments, particle counters were used to sample tracer aerosols originating from the wound area and the facial area of the thermal manikins representing surgical staff. The results showed that it is important to perform monitoring close to the areas with high hygiene requirements. Increasing the air change rate with turbulent mixing ventilation significantly reduced the number of airborne particles, however, not in the surgical microenvironment. Our findings show varying results considering the particle concentration using laminar air flow compared to turbulent mixing ventilation. With laminar air flow, higher contaminant levels are obtained in the areas with a high demand for contamination reduction. In contrast, laminar air flow was more effective in reducing the concentration of surgical smoke in the facial areas of the surgical staff. Regarding airborne germs, monitoring should be performed at the instrument tables and close to the wound area to evaluate the risk for surgical side infections. These results can support the development of guidelines and best practices for operating room ventilation design and maintenance to improve patient safety and reduce the risk of healthcare-associated infections.
Highlights OR air flow studied through experimental and numerical analysis. Germs and smoke spread in realistic OR conditions examined. LAF led to higher concentrations of airborne germs above the wound area. No negative link found between ACR and particle concentration. Live monitoring of airborne contaminations should be close to the protected areas.
Experimental analysis of airborne contaminant distribution in an operating room with different ventilation schemes
https://orcid.org/0000-0003-1031-0662
https://orcid.org/0000-0003-0165-2900
Abstract Experimental and numerical investigations were performed in a research operating room to compare laminar air flow and turbulent mixing ventilation systems in reducing the concentrations of airborne germs and surgical smoke in operating room air. In addition, measurements at scattered positions were conducted to find positions that are suited best for airborne monitoring in real-time during surgeries. In the experiments, particle counters were used to sample tracer aerosols originating from the wound area and the facial area of the thermal manikins representing surgical staff. The results showed that it is important to perform monitoring close to the areas with high hygiene requirements. Increasing the air change rate with turbulent mixing ventilation significantly reduced the number of airborne particles, however, not in the surgical microenvironment. Our findings show varying results considering the particle concentration using laminar air flow compared to turbulent mixing ventilation. With laminar air flow, higher contaminant levels are obtained in the areas with a high demand for contamination reduction. In contrast, laminar air flow was more effective in reducing the concentration of surgical smoke in the facial areas of the surgical staff. Regarding airborne germs, monitoring should be performed at the instrument tables and close to the wound area to evaluate the risk for surgical side infections. These results can support the development of guidelines and best practices for operating room ventilation design and maintenance to improve patient safety and reduce the risk of healthcare-associated infections.
Highlights OR air flow studied through experimental and numerical analysis. Germs and smoke spread in realistic OR conditions examined. LAF led to higher concentrations of airborne germs above the wound area. No negative link found between ACR and particle concentration. Live monitoring of airborne contaminations should be close to the protected areas.
Experimental analysis of airborne contaminant distribution in an operating room with different ventilation schemes
Schumann, Lukas (Autor:in) / Lange, Julia (Autor:in) / Cetin, Yunus Emre (Autor:in) / Kriegel, Martin (Autor:in)
Building and Environment ; 244
26.08.2023
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Room Air and Contaminant Distribution in Mixing Ventilation
| British Library Conference Proceedings | 1996
Room Air and Contaminant Distribution in Mixing Ventilation
| British Library Online Contents | 1996