An observational study of the universal use of octenidine to decrease nosocomial bloodstream infections and MDR organisms

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Abstract

Objectives

To investigate the effect of universal decolonization with octenidine on the incidence of ICU-acquired bloodstream infections (BSI) and MDR organisms (MDRO).

Methods

A system-wide change in practice was performed in the ICUs of a university hospital with three campuses (eight medical ICUs and nine surgical ICUs). All ICUs had a general admission screening strategy for MRSA with subsequent isolation in the 12 month baseline period, which was stopped. After a wash-in period of 1 month, decolonization of the nose with octenidine nasal gel and octenidine wash cloths was introduced. The endpoints were ICU-acquired BSI and ICU-acquired MDRO isolates from clinical cultures. Segmented regression analysis of interrupted time series was used to assess the effect of intervention.

Results

A total of 29 532 ICU patients (16 677 surgical and 12 855 medical) were included in the study. The baseline incidence density of ICU-acquired BSI was 5.1 per 1000 patient days and the baseline ICU-acquired MRSA rate was 0.97 per 1000 patient days. Whereas no significant effect on either outcome was found in surgical ICUs, we identified a significant effect on ICU-acquired BSI for the intervention in medical ICUs by means of multivariate analysis (incidence rate ratio 0.78; 95% CI 0.65–0.94). In addition, the intervention was also effective in decreasing ICU-acquired MRSA in medical ICUs (incidence rate ratio 0.58; 95% CI 0.41–0.82). No effect on ICU-acquired VRE and Gram-negative MDRO was found.

Conclusions

System change was successful by decreasing infection rates in medical ICUs and improving the management in all ICUs.

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