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J Hosp Infect. 2021 Nov 16;120:110-116. doi: 10.1016/j.jhin.2021.11.005. Epub 2021 Nov 16.

Can clothing systems and human activity in operating rooms with mixed flow ventilation systems help achieve the ultraclean air requirement (≤10 CFU/m.

The Journal of hospital infection

G Cao, C Pedersen, Y Zhang, F Drangsholt, A Radtke, H Langvatn, L-I Stenstad, H M Mathisen, J G Skogås

Affiliations

  1. Department of Energy and Process Engineering, Norwegian University of Science and Technology, Trondheim, Norway. Electronic address: [email protected].
  2. MultiConsult Norge AS, Seksjon VVS Tromsø, Norway.
  3. College of Civil Engineering and Architecture, Hainan University, Haikou, China.
  4. Sykehusbygg HF, Trondheim, Norway.
  5. Unit for Infection Control, St. Olavs Hospital, Trondheim University Hospital, Trondheim, Norway; Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway.
  6. Department of Orthopaedic Surgery, St. Olavs University Hospital, Trondheim, Norway; The Norwegian Arthroplasty Register, Department of Orthopaedic Surgery, Haukeland University Hospital, Bergen, Norway; Department of Clinical Medicine, University of Bergen, Bergen, Norway.
  7. Operating Room of the Future, St. Olavs Hospital, Trondheim University Hospital, Trondheim, Norway.
  8. Department of Energy and Process Engineering, Norwegian University of Science and Technology, Trondheim, Norway.

PMID: 34798173 DOI: 10.1016/j.jhin.2021.11.005

Abstract

OBJECTIVES: The level of airborne microbial contamination in operating rooms (ORs) is an important indicator of indoor air quality and ensures a clean surgical environment. The main objective of this study was to clarify the possibility of achieving the requirement for an ultraclean operating room (≤ 10 CFU/m

METHODS: Experimental measurements during mock surgeries were conducted in an actual OR with mixed flow ventilation in the Emergency, Heart and Lung Centre at St. Olavs Hospital in Trondheim. The bacterial concentration close to the surgical site was measured during five mock-up surgeries. All five mock-up surgeries followed real surgical procedures which could represent similar conditions in the OR.

RESULTS: The experiment results verified that the average CFU/m

CONCLUSIONS: It is possible to achieve the ultraclean air requirement (≤ 10 CFU/m

Copyright © 2021 The Healthcare Infection Society. Published by Elsevier Ltd. All rights reserved.

Keywords: Clothing; Hospital operating room; Human activity; Mixed flow ventilation; Surgical site infection

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