T. Suvd-Erdene (1,4), T. Gantumur (1,4), W. Popp (2,4), N. Parohl ( 2,4*), C. Battogtokh (3)
Medclean LLC (1), HyKoMed GmbH (2), Mongolian National University of Medical Science (3), Mongolian Emergency Service Hospital Hygiene Project (MeshHp) (4)
Abstract: The high prevalence of hepatitis B and C in the Mongolian population is imputed not least to inadequate reprocessing of the medical devices used. For the purpose of the current study conducted in 77 healthcare institutions in Mongolia, 105 autoclaves, three ethylene oxide (EO) sterilizers, one formaldehyde (FO) and one plasma (H2O2) sterilizer were investigated with biological indicators. 8 % of the autoclaves and two of the three EO sterilizers showed unsatisfactory performance. The H2O2 and FO sterilizers tested inactivated the biological indicators. Of the autoclaves, the older Russian models produced better results than the modern sterilizers from China and Korea. That may be due to the long experience with the old Russian appliances, which have no pre-vacuum, unlike with the more complex modern sterilizers. Thermologgers were used for the first time (in Mongolia) for measurement of physical parameters such as pressure, holding time and temperature. The findings indicate that inadequate reprocessing of medical devices may impact the high colonization rates with hepatitis viruses in Mongolia.
Markus Wehrl*1, Amelie Achten1
(1 wfk-Cleaning Technology Institute e.V., Krefeld)
Background: Process challenge devices (PCDs) according to Annex 9 of the Guideline are used for the process control of the overall reprocessing efficacy for thermolabile endoscopes. The analysis of these PCDs is sophisticated and requires a microbiological laboratory. These PCDs are therefore not appropriate for routine controls in central sterile departments.