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GMS Krankenhaushygiene Interdisziplinär

Ojan Assadian, Axel Kramer, Georg Meyer
No abstract text is available yet for this article.
2012: GMS Krankenhaushygiene Interdisziplinär
Nils-Olaf Hübner, Steffen Fleßa, Ralf Jakisch, Ojan Assadian, Axel Kramer
In the care of patients, the prevention of nosocomial infections is crucial. For it to be successful, cross-sectoral, interface-oriented hygiene quality management is necessary. The goal is to apply the HACCP (Hazard Assessment and Critical Control Points) concept to hospital hygiene, in order to create a multi-dimensional hygiene control system based on hygiene indicators that will overcome the limitations of a procedurally non-integrated and non-cross-sectoral view of hygiene. Three critical risk dimensions can be identified for the implementation of three-dimensional quality control of hygiene in clinical routine: the constitution of the person concerned, the surrounding physical structures and technical equipment, and the medical procedures...
2012: GMS Krankenhaushygiene Interdisziplinär
Nils-Olaf Hübner, Stephan Handrup, Georg Meyer, Axel Kramer
AIM: To assess trends in hygiene management in dental practices in comparison to an earlier survey in 2002/2003 and to point out key aspects for future efforts. METHOD: The infection prevention management of all dental practices in Greifswald (n=35) was determined by a questionnaire in a personal interview in 2008/2009. RESULTS: 26% of the dentists did not use sufficient personal protective equipment during the general examination of the patient...
2012: GMS Krankenhaushygiene Interdisziplinär
Alexander Franz, Margit Bristela, Fritz Stauffer
BACKGROUND: Reprocessing of medical devices, being classified as semi-critical B is recommended to be performed in a washer-disinfector. In order to estimate, whether the expected contaminants of the various medical disciplines can be effectively removed by this washer-disinfector, different so called "test soils" have been proposed to be tested as a marker of cleaning efficacy of the disinfector. Todays described test soils are optimised for the testing of contaminations occurring in surgical procedures, but not for dental procedures...
2012: GMS Krankenhaushygiene Interdisziplinär
Margit Bristela, Astrid Skolka, Martina Schmid-Schwap, Eva Piehslinger, Alexander Indra, Günther Wewalka, Fritz Stauffer
BACKGROUND: Currently, to our knowledge, quality of output water of dental chair units is not covered by specific regulations in the European Union, and national recommendations are heterogeneous. In Germany, water used in dental chair units must follow drinking water quality. In the United States of America, testing for aerobic heterotrophic bacteria is recommended. The present study was performed to evaluate whether the counts of aerobic heterotrophic bacteria correlate with the presence of potentially pathogenic bacteria such as Legionella spp...
2012: GMS Krankenhaushygiene Interdisziplinär
Axel Kramer, Ojan Assadian, Danny Bachfeld, Georg Meyer
INTRODUCTION: During hygienic-microbiological monitoring of the water quality in dental units, the total bacterial colony count was found to exceed the limits for drinking water quality; in addition, mold contamination was detected. The presumed cause was irregular decontamination of the units through purging and intensive decontamination. METHODS: To decontaminate the units, the manufacturer's recommended program for cleaning and intensive decontamination was intensified by shortened intervals over a 2-week period...
2012: GMS Krankenhaushygiene Interdisziplinär
Axel Kramer, Torsten Koburger, Lisa-Dorothea Taube, Michael Menzel, Georg Meyer, Ojan Assadian
BACKGROUND: A frequent problem in dental units is the microbial contamination of water and biofilm formation in the water supply lines. After random identification of a bacterial contaminated dental unit (310 cfu/ml) in a practise with 3 dental units we implemented the present study to evaluate the efficacy of the PotoClean(®) technology, based on anodic oxidation. METHOD: The efficacy of a regular low concentrated permanent decontamination (1 mg Cl/L) with an additional intensive decontamination by PotoClean(®) (three times 20 mg Cl/ml for 2 h) on three dental units was tested over 7 months...
2012: GMS Krankenhaushygiene Interdisziplinär
Axel Kramer, Sandra Lemanski, Kathleen Demond, Ojan Assadian
BACKGROUND: The hygienic-microbiological control of 6 dental units being in use for the past 16 years revealed a significantly increased microbial contamination of their cooling water system. In order to comply with the requirements of the drinking water directive ("Trinkwasserverordnung"), the commercially available production system ActiDes, producing on-site ActiDes-Blue which is based on hypochlorous acid (HOCl) and generated by anodic oxidation, was investigated. METHOD: Water samples from the 6 contaminated dental units were examined for the total number of colony forming units (cfu), contamination with molds, L...
2012: GMS Krankenhaushygiene Interdisziplinär
Sebastian Fischer, Georg Meyer, Axel Kramer
BACKGROUND: In preparation for implementation of a central water processing system at a dental department, we analyzed the costs of conventional decentralized disinfection of dental units against a central water treatment concept based on electrochemical disinfection. METHODS: The cost evaluation included only the costs of annually required antimicrobial consumables and additional water usage of a decentralize conventional maintenance system for dental water lines build in the respective dental units and the central electrochemical water disinfection system, BLUE SAFETY™ Technologies...
2012: GMS Krankenhaushygiene Interdisziplinär
Anne Schiller, Beatrice Großjohann, Alexander Welk, Nils-Olaf Hübner, Dagmar Braun, Ojan Assadian, Axel Kramer
INTRODUCTION: The aim of the present study was to determine the antimicrobial effect of various gel formulations on plaque formation; different tooth gels were compared to a toothpaste containing comparable antimicrobial ingredients with regard to its microbiocidal activity. The study was conducted under the assumption, that a chief requirement for the prevention of plaque formation is the combination of mechanical removal and antimicrobial activity, and not the sole capability of mechanical plaque removal...
2012: GMS Krankenhaushygiene Interdisziplinär
Ina Koban, Rutger Matthes, Nils-Olaf Hübner, Alexander Welk, Rabea Sietmann, Jürgen Lademann, Axel Kramer, Thomas Kocher
OBJECTIVE: Many dental diseases are attributable to biofilms. The screening of antimicrobial substances, in particular, requires a high sample throughput and a realistic model, the evaluation must be as quick and as simple as possible. For this purpose, a colorimetric assay of the tetrazolium salt XTT (sodium 3'-[1-[(phenylamino)-carbony]-3,4-tetrazolium]-bis(4-methoxy-6-nitro)benzene-sulfonic acid hydrate) converted by saliva biofilms is recommended. Cleavage of XTT by dehydrogenase enzymes of metabolically active cells in biofilms yields a highly colored formazan product which is measured photometrically...
2012: GMS Krankenhaushygiene Interdisziplinär
Mehrdad Askarian, Leila Malekmakan, Ziad A Memish, Ojan Assadian
BACKGROUND: The risk of occupational exposure to blood borne pathogens (including hepatitis B, hepatitis C and HIV) via sharp injuries such as needle stick injuries (NSIs) among health care workers, especially dental, nursing and midwifery students is a challenging issue. Inadequate staff, lack of experience, insufficient training, duty overload and fatigue may lead to occupational sharp injuries. The aim of this prospective cross-sectional study was to evaluate the frequency of NSIs in Iranian dental, nursing, and midwifery students and their knowledge, attitude and practices regarding prevention of NSIs...
2012: GMS Krankenhaushygiene Interdisziplinär
Guido A Gualdoni, Tilman Lingscheid, Selma Tobudic, Heinz Burgmann
BACKGROUND: Multi-drug resistant bacteria are increasing and remain a major public health challenge worldwide. In order to understand the potential role of medical students as a reservoir for circulating pathogenic bacteria and their transmission, we analysed the nasal colonisation among 86 clinically exposed medical students of the Medical University of Vienna, which is integrated into General Hospital of Vienna. METHODS: Nasal swabs obtained from 79 students were eligible for further analysis...
2012: GMS Krankenhaushygiene Interdisziplinär
Ojan Assadian, Axel Kramer, Bärbel Christiansen, Martin Exner, Heike Martiny, Arno Sorger, Miranda Suchomel
Hand hygiene is one of the most important measures to prevent transmission of infectious agents and plays a major role in prevention of infection in any type of healthcare setting. While requirements for the efficacy of hand disinfectants are defined in European testing norms such as the EN 1500 for hygienic hand disinfection or EN 12791 for surgical hand preparation, no specific recommendations for hand rub dispensers and liquid soap dispensers have been given yet. Therefore, the intention of the present recommendation on soap and hand rub dispensers in healthcare facilities is to close this gap and to enhance future improvement of dispenser functionality and design...
2012: GMS Krankenhaushygiene Interdisziplinär
Rutger Matthes, Sander Bekeschus, Claudia Bender, Ina Koban, Nils-Olaf Hübner, Axel Kramer
INTRODUCTION: Physical plasma is a promising new technology regarding its antimicrobial effects. This is especially accounting for treatment of bacterial infection of chronic wounds. Plasma can be generated with different carrier gases causing various biological effects. Screening of different carrier gases and plasma generation setups is therefore needed to find suitable compositions for highly effective antimicrobial plasma treatments and other applications. METHOD: The plasma source used was a radio-frequency plasma jet which generates tissue tolerable plasma (TTP)...
2012: GMS Krankenhaushygiene Interdisziplinär
Herbert Widulle
If all locations of a living cell would have the same chemical potential, most viral infections of a cell should be abortive, even after the a penetration of the cell wall by the viral DNA-polymer or viral RNA-polymer occurred. This is obviously not the case. Therefore, there must be a mechanism which transports a viral DNA-polymer from the cell wall to the nucleus and not to any other location. A possible mechanism is proposed which is in accordance with biophysical chemistry. The presented description of the mechanism uses non equilibrium thermodynamics to find a simple solution for the problem...
2012: GMS Krankenhaushygiene Interdisziplinär
Nils-Olaf Hübner, Axel Kramer, Wolfram Mittelmeyer
No abstract text is available yet for this article.
2011: GMS Krankenhaushygiene Interdisziplinär
Miriam G Gerlich, Andreas Möller, Christian Schäfer, Anne-Kathrin Strohbach, Janina Krafczyk-Korth, Wolfgang Hoffmann
The health care region Baltic Coast is within the framework of the joint project HICARE (Health, Innovative Care & Regional Economy) to be developed from January 2011 to December 2014 into a model region to combat the spread of multi-resistant organisms (MRO). The concept of the project area "IT & Epidemiology" will be introduced here. An IT system is to be developed and implemented consisting of two interconnected elements, a central data management and a web-based support system for information and decision...
2011: GMS Krankenhaushygiene Interdisziplinär
Roland Linder, Isabell Thoms, Ingo Pfenning, Rolando Schadowski, Volker Möws
Multi-resistant pathogens are a serious problem on a considerable scale for the health sector. Patients with infections induced by multi-resistant bacteria cause enormous additional treatment costs of around 20,500 € per insured. Due to the recently used billing and documentation system there is a significant shortage of information transparency. The guidelines for hospital hygiene and infection prevention published by the Robert Koch Institute (RKI) include a presumption provision, which means that subject to compliance with these guidelines the observance of the current state of medical science is suspected...
2011: GMS Krankenhaushygiene Interdisziplinär
N-O Hübner, S Fleßa, J Haak, F Wilke, C Hübner, C Dahms, W Hoffmann, A Kramer
Recently, the HACCP (Hazard Analysis and Critical Control Points) concept was proposed as possible way to implement process-based hygiene concepts in clinical practice, but the extent to which this food safety concept can be transferred into the health care setting is unclear. We therefore discuss possible ways for a translation of the principles of the HACCP for health care settings. While a direct implementation of food processing concepts into health care is not very likely to be feasible and will probably not readily yield the intended results, the underlying principles of process-orientation, in-process safety control and hazard analysis based counter measures are transferable to clinical settings...
2011: GMS Krankenhaushygiene Interdisziplinär
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