A “halo” effect of chlorhexidine patient bathing: reduced environmental contamination

Posted

13th July 2018

Research

An Irish study has examined whether daily bathing of patients using chlorhexidine results in a “halo” effect, in reducing environmental contamination. The study found that contamination of surfaces with VRE and ESBL Enterobacteriaceae (ESBL-E) in the near-patient environment was significantly lower when chlorhexidine bathing was in operation.

The study was performed in a 12-bed mixed speciality ICU over 20 months including 157 patients, during which daily chlorhexidine bathing was introduced. Each occupied bed was sampled twice weekly for a range of antibiotic-resistant bacteria. 9.4% of 745 surfaces sampled prior to the introduction of chlorhexidine were contaminated with VRE or ESBL-E vs. 5.0% of 958 surfaces samples after (p<0.001). There was a stark and significant reduction in contamination with VRE or ESBL-E from hand-wash basins: before the introduction of chlorhexidine, 10% of hand-wash basins were contaminated (!), which fell to <2% after chlorhexidine was introduced.

The study evaluated a number of potentially confounding variables: hand hygiene compliance remained more or less the same, and bed occupancy and antibiotic usage increased. It is impressive that a reduction in contamination was observed despite increases in bed occupancy and antibiotic consumption, which have been shown to increase the risk of HCAI. The team even evaluated whether the ambient mean temperature differed between the two periods (it did not).

Although the study was performed in a single centre and no randomisation was involved, it was extraordinarily well controlled for the impact of potentially confounding variables. This study illustrates the “halo” effect of chlorhexidine daily bathing in reducing environmental contamination. This reduction in environmental contamination is likely to be a contributing factor to the improvement in clinical outcomes associated with chlorhexidine daily bathing.

SHARE THIS ARTICLE

Tags

Latest News

Research

Clean Between to Reduce Healthcare-Associated Infections

Healthcare-associated infections (HAIs) are a significant concern for healthcare facilities…

Research

Wiping away infections – the CLEEN way!

Cleaning shared medical equipment with a disinfectant wipe at least…

Events and Exhibitions

IPC Tour 2024 Highlights

GAMA Healthcare and ACIPC once again joined forces to bring…

Research

Can patient and resident hand hygiene be part of the solution to preventing infections?

The importance of practising proper hand hygiene is widely considered…