Suitability evaluation on laminar airflow and mixing airflow distribution strategies in operating rooms: A case study at St. Olavs Hospital

Abstract

Highlights• Develop a new suitability evaluation method for operating room ventilation systems.• Considers ventilation effectiveness, energy consumption and users' satisfaction as a whole.• Evaluation results may provide guidance for ventilation system commissioning.• Proposed evaluation framework has flexibility and scalability on specific indicators.

Ventilation Strategies for Mitigating Airborne Infections in Healthcare Facilities: A Mini-Review and Bibliometric Analysis (1970 to 2021)

“…[ -average risk reduction of 27% was achieved when using 100% outdoor air -reduction of 37% in average-risk was achieved after doubling the total sir supply -DV reduced 26% average infection risk, while partitions achieved a 46% reduction in infection risk -integrating both DV and partitions achieved 96% infection risk reduction [80] Indoor environment: Air temperature rate: 20 -60°C; ±0.2°C accuracy Relative humidity: 0 -90%; ±1.1% accuracy OR with MV system was deemed "unsuitable" due to unsatisfactory performance in thermal comfort indexes and energy consumption OR with LAF was identified as "suitable". This is due to the guaranteed clean and safe operation environment [81] Indoor environment: A room -dimension: 9m × 9m × 4m -a manikin (1.75m tall) as infector, placed at the centre of the room Ventilation strategy: MV -circulated curtain system formed by four air pillars (2m-height, each) that surrounded the manikin in a quadrilateral shape -inlet's outlet's widths were 20mm and 40mm, respectively -the distance between the human and air pillar was 1.5m…”

Can clothing systems and human activity in operating rooms with mixed flow ventilation systems help achieve the ultraclean air requirement (≤10 CFU/m3) during orthopaedic surgeries?

“…The level of airborne microbes occurring during surgery is a result of many factors, including ventilation design and performance, human activity, number of people, clothing, room cleanliness and so on [23][24][25][26][27][28][29] . As the practical limitations of the experimental measurements, we only analyze the effect of clothing and human activity on the CFU level in our study.…”

An analytic network process model for hospital facilities management performance evaluation

“…Studies that have used MCDM methods to investigate FM-related matters in hospital environments are ubiquitous and cover focused areas such as waste management system (Brent et al, 2007;Hariz et al, 2017;Thakur and Ramesh, 2017;Aung et al, 2019Aung et al, , 2020aAung et al, , 2020bPradenas et al, 2020); technology adoption and assessment (Hummel et al, 2000;Ritrovato et al, 2015;Howard et al, 2019;Alrahbi et al, 2021); risk management (Yucel et al, 2012;Zhang et al, 2015;Tervonen et al, 2015;Corvino et al, 2021); facility layout and design (Fogliatto et al, 2019;Lin and Wang, 2019;Corvino et al, 2021;Fan et al, 2021); maintenance management (Shohet, 2003;Sweis et al, 2014;Karimi et al, 2020); and supply chain management (Larimi and Yaghoubi, 2019;Leksono et al, 2019;Hossain and Thakur, 2020). To support management decision-making or evaluate the performance of certain types of management processes, the AHP method and the ANP method are commonly-used MCDM tools.…”