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Reusable Electroencephalography Electrodes: Variability in Cleaning and Reprocessing Practices.

Nancy M Albert1, James F Bena2, Nowai Keleekai-Brapoh3

  • 1a Office of Nursing Research and Innovation Cleveland Clinic , Cleveland , Ohio.

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|March 28, 2019
PubMed
Summary
This summary is machine-generated.

Bacterial growth was found on 25% of reusable electroencephalography (EEG) cup electrodes. Shorter drying times (≤5 minutes) significantly reduced positive cultures, suggesting improved cleaning practices are crucial for patient safety.

Keywords:
Bacteriacleaning practicesmicroorganism growthreprocessing practicesreusable electroencephalography electrodes

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Area of Science:

  • Infection Control and Hospital Epidemiology
  • Neuroscience
  • Medical Device Reprocessing

Background:

  • Reusable electroencephalography (EEG) cup electrodes are essential for epilepsy monitoring.
  • Previous studies indicate a significant prevalence of bacterial contamination on these devices.
  • Current institutional cleaning practices may be insufficient to prevent microbial growth.

Purpose of the Study:

  • To investigate the prevalence of bacterial growth on reusable EEG cup electrodes/lead wires.
  • To identify specific cleaning and reprocessing characteristics associated with reduced bacterial contamination.
  • To evaluate the impact of various handling and cleaning parameters on culture positivity.

Main Methods:

  • A survey was administered to personnel supervising the cleaning of 124 EEG cup electrodes/lead wires across four epilepsy monitoring units.
  • Generalized mixed-effect models were used to compare sites and storage conditions.
  • Odds ratios and 95% confidence intervals were calculated for nine cleaning/reprocessing characteristics.

Main Results:

  • Twenty-five percent of tested EEG cup electrodes/lead wires exhibited bacterial growth.
  • Drying time ≤ 5 minutes was significantly associated with a 71% decrease in the odds of positive bacterial cultures (OR: 0.29 [0.09, 0.97], P = 0.045).
  • Unrushed cleaning ( > 1 hour post-patient care) and simultaneous cleaning of multiple sets showed a trend toward fewer positive cultures (OR: 0.16 [0.02, 1.40], P = 0.092).

Conclusions:

  • Microbial contamination persists on cleaned EEG cup electrode lead wires in epilepsy monitoring units.
  • Specific reprocessing practices, particularly drying time, significantly influence bacterial culture results.
  • Optimizing cleaning and drying protocols is essential to minimize contamination risk and enhance patient safety.