Ambulatory Dialysis Unit Surface Decontamination: Roles for Enhanced Environmental Service Resources and Antimicrobial Surfaces
Methods: The intervention bundle included enhanced environmental service (ES) resources (increased staffing and implementation of a cleaning checklist for the entire unit) as well as installation of antimicrobial copper components (sinks, light switch plates and glove box holders) in one section of the unit. Pre- and post-intervention implementation, we measured contamination of dialysis stations, sinks, light switch plates, and glove box holders. All surfaces were sampled with a tryptic soy agar contact plate. Plates were incubated overnight at 37ºC and colonies were counted. Contamination was reported either as colony forming units (CFU) per surface or the percentage of plates positive for contamination (% Positive). All data was reported as mean CFU or % Positive ± standard error of the mean.
Results: ES interventions significantly reduced the % Positive rate of dialysis stations relative to pre-intervention measurements (78.5 ± 2.2 and 89.3 ± 5.7, respectively; p < 0.0236). For copper surfaces, when compared to pre-intervention measurements, ES interventions significantly reduced surface mean CFUs on glove box holders (19.59 ± 17.04 and 3.57 ± 0.69, respectively; p = 0.048). Installation of copper sinks significantly reduced mean CFUs relative to pre-intervention and non-copper, ES intervention sinks (5.91 ± 1.94, 74.94 ± 24.64, 60.12 ± 14.16, respectively; p < 0.0001). The % Positive rate was also significantly lower on copper sinks relative to pre-intervention and ES intervention sinks (55, 100, 100, respectively; p < 0.0001).
Conclusion: Enhancement of ES resources lead to a reduction in the % Positive rate of dialysis stations and the total contamination on glove box holders. Installation of copper sinks lead to a dramatic reduction in both the frequency and total surface contamination.
N. Benda, None
V. Lewis, None