Ida-Linnea Böregård, Sven Bringman, Christine Leo Swenne, Ann-Christin Von Vogelsang
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引用次数: 0
Abstract
Background: Microbiological air contamination in the operating room (OR) is associated with the risk of surgical site infections (SSIs) after joint replacement procedures. Recommendations define the level of microbiological air cleanliness by the number of colony-forming units (cfu) in an OR. Airborne microorganisms originate from the staff and unidirectional airflow (UDAF) ventilation is effective in the OR, providing filtered air to create ultraclean zones.
Aim: To evaluate the air cleanliness in the demarcation zone during joint replacement procedures and describe the limitations for optimal air cleanliness in an UDAF ventilation.
Methods: In a cross-sectional design, cfu were measured using active air sampling in an OR with UDAF. Comparative measures were taken between demarcation and outer zone, supplemented by observations of staff numbers, traffic flow and movements.
Findings: A total of 166 samples were collected during 20 arthroplasty procedures. There were significantly more cfus in the outer zone than in the demarcation zone (P < 0.001). The only significantly predictor associated for higher cfu counts were the numbers of persons in the outer zone (odds ratio: 2.566; 95% confidence interval: 1.306-5.044; P = 0.006). Observations associated with higher cfu counts were method or organisational related.
Conclusions: Air cleanliness in UDAF ventilation was better in the demarcation zone compared to the outer zone, and the number of persons in the outer zone was associated with decreased air cleanliness. Intraoperative movements could cause higher cfu counts in demarcation zone, but further studies are needed to evaluate the consequences of staff movements.
期刊介绍：
The Journal of Hospital Infection is the editorially independent scientific publication of the Healthcare Infection Society. The aim of the Journal is to publish high quality research and information relating to infection prevention and control that is relevant to an international audience.
The Journal welcomes submissions that relate to all aspects of infection prevention and control in healthcare settings. This includes submissions that:
provide new insight into the epidemiology, surveillance, or prevention and control of healthcare-associated infections and antimicrobial resistance in healthcare settings;
provide new insight into cleaning, disinfection and decontamination;
provide new insight into the design of healthcare premises;
describe novel aspects of outbreaks of infection;
throw light on techniques for effective antimicrobial stewardship;
describe novel techniques (laboratory-based or point of care) for the detection of infection or antimicrobial resistance in the healthcare setting, particularly if these can be used to facilitate infection prevention and control;
improve understanding of the motivations of safe healthcare behaviour, or describe techniques for achieving behavioural and cultural change;
improve understanding of the use of IT systems in infection surveillance and prevention and control.
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