Kevin G Kerr1,2, Clive B Beggs3, Stephen G Dean4, Judith Thornton4, Judith K Donnelly5, Neil J Todd6, P Andrew Sleigh3, Andleeb Qureshi7, Charles C Taylor8. 1. Aerobiological Research Group, School of Civil Engineering, University of Leeds, Leeds, UK. kevin.kerr@hdft.nhs.uk. 2. Department of Microbiology, Harrogate District Hospital, Lancaster Park Road, HG2 7SX, Harrogate, North Yorkshire, UK. kevin.kerr@hdft.nhs.uk. 3. Aerobiological Research Group, School of Civil Engineering, University of Leeds, Leeds, UK. 4. Intensive Care Unit, St James's University Hospital, Leeds, UK. 5. Trinity and All Saints College, Leeds, UK. 6. Department of Microbiology, York District Hospital, York, UK. 7. Division of Microbiology, School of Biochemistry and Molecular Biology, University of Leeds, Leeds, UK. 8. School of Mathematics, University of Leeds, Leeds, UK.
Abstract
OBJECTIVE: To determine effect of negative air ions on colonisation/infection with methicillin-resistant Staphylococcus aureus (MRSA) and Acinetobacter species in an intensive care unit. DESIGN: Prospective single-centre cross-over study in an adult general intensive care unit. PATIENTS: 201 patients whose stay on the unit exceeded 48 hour's duration. INTERVENTION: Six negative air ionisers were installed on the unit but not operational for the first 5 months of the study (control period). Devices were then operational for the following 5.5 months. MEASUREMENTS AND RESULTS: 30 and 13 patients were colonised/infected with MRSA and Acinetobacter spp., respectively, over 10.5 months. No change in MRSA colonisation/infection was observed compared with the 5 month control period. Acinetobacter cases were reduced from 11 to 2 (p=0.007). CONCLUSION: Ionisers may have a role in the prevention of Acinetobacter infections.
OBJECTIVE: To determine effect of negative air ions on colonisation/infection with methicillin-resistant Staphylococcus aureus (MRSA) and Acinetobacter species in an intensive care unit. DESIGN: Prospective single-centre cross-over study in an adult general intensive care unit. PATIENTS: 201 patients whose stay on the unit exceeded 48 hour's duration. INTERVENTION: Six negative air ionisers were installed on the unit but not operational for the first 5 months of the study (control period). Devices were then operational for the following 5.5 months. MEASUREMENTS AND RESULTS: 30 and 13 patients were colonised/infected with MRSA and Acinetobacter spp., respectively, over 10.5 months. No change in MRSA colonisation/infection was observed compared with the 5 month control period. Acinetobacter cases were reduced from 11 to 2 (p=0.007). CONCLUSION: Ionisers may have a role in the prevention of Acinetobacter infections.
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