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खुला एक्सेस

अमूर्त

The Importance of the Washing Evaluation of Flusher Disinfector in the Medical Site: Visual Evaluation with the ISO Standardized Test Soil and Adenosine Triphosphate Level

Mari Shima*, Rika oshida , Takashi Okubu Y

Background: The Flasher Disinfector (FD) is designed to help reusable urinals and bedpans to be emptied, cleaned, and disinfected. Since FD may be used for bedpans exposed to heat-resistant bacteria such as Clostridioides difficile and Enterococci, ensuring washing of the human waste container is an important factor in preventing Hospital Associated Infections.

Objective: To examine washing evaluation method of FD installed in the medical site by visual evaluation with ISO test soil and Adenosine Triphosphate (ATP) measurement.

Methods: The test soil shown in ISO15883-5 was applied to the bedpan by two methods and then visually evaluated on a four-step scale. The ATP value on the surface of the bedpan corresponding to each scale was measured, and the correlation with the visual scale was confirmed. In addition, a visual evaluation was performed using a different FD and bedpan.

Results: In the visual evaluation, when the test soil was applied to the entire surface of the bedpan, it remained in the parts where the water flow was hard to hit. When the test soil was applied to the surface of the bedpan except the lid, there was no remaining. The 4-step visual evaluation scale and the logarithm of ATP value showed a positive correlation (correlation coefficient=0.86). Visual evaluation with different FD and bedpan combinations, the residual parts of the test soil tended to be different.

Conclusion: It was suggested that poor cleaning of FD may occur when the amount of water was insufficient, or the bedpan is significantly contaminated. It was considered important to carry out FD washing evaluation at medical sites in order to evaluate the function of FD, select an appropriate program, and utilize it for staff education for appropriate management. Since FDs and bedpans are diverse, it is recommended to carry out FD cleaning evaluation at each facility.