1.Accuracy of spring-style and friction-style mechanical implant torque wrench.
The Journal of Korean Academy of Prosthodontics 2016;54(1):8-13
PURPOSE: The aim of this study was to compare the accuracy of two different styles of mechanical implant torque wrenches before and after sterilization and repeated use. MATERIALS AND METHODS: Thirty new spring-style and friction-style mechanical implant torque wrenches from five different manufacturers were selected as subjects of study and assessed in terms of accuracy. Three manufacturers produced, spring-style (Dio, Neobiotech, Osstem) torque wrenches, and other three manufactures produced friction-style (Dentium, Osstem, Shinhung) torque wrenches. The procedure of target torque measurement was performed 10 times for each device and a digital torque gauge (MGT-12, Mark-10 Corp, USA) was used to record the measurements. All torque wrenches were used repeatedly for 20 times and then sterilized. This whole procedure was repeated 100 times and all torque wrenches were retested. The collected data was analyzed using a SPSS Statistics Analysis program to evaluate the accuracy of the torque wrenches and Mann-Whitney-U test was used for a comparative analysis. RESULTS: After sterilization and repeated use procedure, results did not show any significant difference between error values in the spring-style torque wrench group. However, the results demonstrated an increase in error values within the friction-style torque wrench group (P<.05). CONCLUSION: There was no difference between the accuracy of new spring-style torque wrenches before and after 100 cycles of sterilization and repeated use (P>.05). There was significant difference between the accuracy of new friction-style torque wrenches before and after 100 cycles of sterilization and repeated use (P<.05). Within the limitation of this study, spring-style torque wrenches were more accurate than friction-style torque wrenches in delivering target torque values.
Infection Control
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Sterilization
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Torque*
2.Dry heat sterilization of ophthalmic instruments using a commercially available convection broiler
German Gregory ; Valenton Mario J ; Siong Ruben Lim Bon ; Nievera Lilia Flor C.
Philippine Journal of Ophthalmology 2003;28(3):131-139
This study is proposed as an alternative method of sterilization in developing countries Purpose: To determine the efficacy of using a commercially available convection broiler in sterilization of ophthalmic surgical instruments Methods: Surgical ophthalmic instruments were contaminated artificially with Staphylococcus epidermidis, Pseudomonas aeruginosa, and Aspergillus. The instruments were subjected to heat sterilization using the convection broiler at different temperature settings. After which, the instruments were cultured with appropriate media to determine contamination Results: 15 minutes heat sterilization at 260 degrees centigrade was enough to sterilize the contaminated ophthalmic surgical instruments Conclusion: Heat sterilization using a convection broiler provide a cheaper yet effective method of sterilization. (Author)
Human
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STERILIZATION, INFECTION CONTROL
3.Review of Disinfection and Sterilization – Back to the Basics.
Infection and Chemotherapy 2018;50(2):101-109
In-depth knowledge of disinfection and sterilization is a key component of infection control. Sterilization completely removes a spore, whereas disinfection cannot. Disinfectants are classified as oxidants and non-oxidants. The decision regarding which method to apply is based on Spaulding's classification. In this article, disinfection and sterilization are thoroughly reviewed, and extensive information from basic to practical points is discussed.
Classification
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Disinfectants
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Disinfection*
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Infection Control
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Methods
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Oxidants
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Spores
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Sterilization*
4.Review of Disinfection and Sterilization – Back to the Basics.
Infection and Chemotherapy 2018;50(2):101-109
In-depth knowledge of disinfection and sterilization is a key component of infection control. Sterilization completely removes a spore, whereas disinfection cannot. Disinfectants are classified as oxidants and non-oxidants. The decision regarding which method to apply is based on Spaulding's classification. In this article, disinfection and sterilization are thoroughly reviewed, and extensive information from basic to practical points is discussed.
Classification
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Disinfectants
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Disinfection*
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Infection Control
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Methods
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Oxidants
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Spores
;
Sterilization*
5.The Prediction on the Behavior of Infection Control of Operating Room Nurses in Seoul: an Application of the Theory of Planned Behavior.
Eunju CHOI ; Soonduck KIM ; Jesuk LEE
Korean Journal of Nosocomial Infection Control 2007;12(2):91-102
BACKGROUND: This is a theory verification study in which the theory of planned behavior (TPB) of Ajzen is applied to predict operating room (OR) infection control behavior. The study was carried out to know the path of attitude, subjective norm, perceived behavioral control, and intention towards OR infection control behavior. METHODS: A total of 178 OR nurses working at 13 hospitals in Seoul were the subjects of this study. A questionnaire survey was performed; the data were collected from April 6 to April 19, 2005 and analyzed with t-test, ANOVA, multiple regression, and person's correlation using SPSS program. Using AMOS, the factors of TPB were analyzed with path analysis. RESULTS: The total mean of infection control behavior of OR nurses was 4.37 points out of possible 5.0, and asepsis/operating instrument sterilization had 4.69, which was the highest among all areas of infection control behavior. In case of the relation between attitude, subjective norm, perceived behavior control, and intention, there was the strongest relation of cause and effect (path coefficient 0.38, 39%). In case of intention, perceived behavior control, and behavior, the relation of cause and effect between intention and behavior was path coefficient 0.17 and behavior was path coefficient 0.19. The degree of explanation was 10%. CONCLUSION: We should try to improve environment management in behavior area, and through this study, the importance of education was verified.
Behavior Control
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Cross Infection
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Education
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Infection Control*
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Intention
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Operating Rooms*
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Seoul*
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Sterilization
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Surveys and Questionnaires
6.The Prediction on the Behavior of Infection Control of Operating Room Nurses in Seoul: an Application of the Theory of Planned Behavior.
Eunju CHOI ; Soonduck KIM ; Jesuk LEE
Korean Journal of Nosocomial Infection Control 2007;12(2):91-102
BACKGROUND: This is a theory verification study in which the theory of planned behavior (TPB) of Ajzen is applied to predict operating room (OR) infection control behavior. The study was carried out to know the path of attitude, subjective norm, perceived behavioral control, and intention towards OR infection control behavior. METHODS: A total of 178 OR nurses working at 13 hospitals in Seoul were the subjects of this study. A questionnaire survey was performed; the data were collected from April 6 to April 19, 2005 and analyzed with t-test, ANOVA, multiple regression, and person's correlation using SPSS program. Using AMOS, the factors of TPB were analyzed with path analysis. RESULTS: The total mean of infection control behavior of OR nurses was 4.37 points out of possible 5.0, and asepsis/operating instrument sterilization had 4.69, which was the highest among all areas of infection control behavior. In case of the relation between attitude, subjective norm, perceived behavior control, and intention, there was the strongest relation of cause and effect (path coefficient 0.38, 39%). In case of intention, perceived behavior control, and behavior, the relation of cause and effect between intention and behavior was path coefficient 0.17 and behavior was path coefficient 0.19. The degree of explanation was 10%. CONCLUSION: We should try to improve environment management in behavior area, and through this study, the importance of education was verified.
Behavior Control
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Cross Infection
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Education
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Infection Control*
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Intention
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Operating Rooms*
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Seoul*
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Sterilization
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Surveys and Questionnaires
8.A Study for Safe Storage Time and Cost Analysis for Sterilized Products.
Jeong Sil CHOI ; Keun Soon KIM
Korean Journal of Nosocomial Infection Control 2004;9(2):131-138
BACKGROUND: The shelf life should be determined by health care facility's infection control program. The current standards for preserving the sterility can be changing. So, to measure and compare the recontamination time of sterile packs among wrappers and storage conditions, and develop a practical standard for the shelf life and storage conditions of sterile products. The purpose of this study was placed on measurement of the recontamination time in packs wrapped in all kinds of wrapping materials used in Il-San hospital and extra-costs. METHODS: The first phase study was from June to November 2002 and tile second phase study was planned to extend further the shelf life of the pouch bag from December 2002 to June 2003. Total 504 sterile sample packs containing cotton ball (5 cm-length) prepared and wrapped in four wrapping materials (randomized reprocessed two folds of lines, a fold of new craft paper, a fold of new nonwoven fabric, a fold of new pouch bag) and stored in three location (open shell of one of typical wards, open shelf of one of ICUs, open shelf of CSSD). Each type of packs were opened weekly and the cotton balls inoculated into thioglycollate broth at 35degrees C for seven days by infection control nurse. The temperature and relative humidity was monitored monthly. RESULTS: There was on growth found for any types of the pack and storage conditions studied. The temperature and relative humidity of storage locations were 24.8degrees C and 35.5 %. The extra-cost of reprocessing in Ethylene-Oxide gas sterilization was \32,800,000 and Steam sterilization was \36,900,000 by year. CONCLUSION: This study was conducted in attempt to identify the possibility of extending the current shelf life for sterile goods we use in a sense of cost effectiveness. It was possible to extend shelf life from four weeks to six months in the study hospital. We are going to continue this study and take all steps need to apply this new concept to our practice, and then trying to extend to other hospitals.
Cost-Benefit Analysis
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Costs and Cost Analysis*
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Delivery of Health Care
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Humidity
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Infection Control
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Infertility
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Steam
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Sterilization
9.Principle and perspective of healthcare-associated infection control
Journal of the Korean Medical Association 2018;61(1):5-12
The concept of healthcare-associated infections broadens the scope of the previously developed concept of hospital-acquired infections. The principles of infection control can be summarized as follows: fight against resistance and block the spread of infection. To manage Infection control well, one should be familiar with the relevant mode(s) of transmission, appropriate precautions, hand hygiene, and the concepts of incidence, disinfection, sterilization, and resistance. Medical directors should also run the infection control committee competently and play the role of a liaison between departments. Although infectious disease management originated as a system implemented by each medical institution, it is developing into a networked system due to improvements in efficiency, the emergence of widespread information sharing, and the necessity of coherent guidelines. Therefore, infectious disease management is expected to be integrated into the foundation of public and private partnerships in the future. In addition, developments in molecular and digital technologies are expected to have further effects on infection control in the future. In particular, since science and technology are developing exponentially, with innovations emerging on a daily basis, it is necessary for workers in the infection control management field to actively engage with rapidly changing trends.
Communicable Diseases
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Disinfection
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Hand Hygiene
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Humans
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Incidence
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Infection Control
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Information Dissemination
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Physician Executives
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Sterilization
10.Current status of disinfection and sterilization for dental handpieces in the hospitals.
Xiao-hong DENG ; Zheng SUN ; Jing SU
Chinese Journal of Preventive Medicine 2004;38(6):365-368
OBJECTIVETo understand current status of the uses of dental handpieces, methods of disinfection and sterilization and their effectiveness in dental-care hospitals and out-patient departments of stomatology in general hospitals.
METHODSTen dental-care hospitals and departments of stomatology in general hospitals at varied levels were randomly sampled during 2000 to 2001 to investigate the uses of dental handpieces and means of their disinfection and sterilization. One used dental handpiece from each hospital or department of stomatology in general hospital selected was detected for possible contamination of bacteria by aerobic bacterial count and Coliform bacterial examinations and hepatitis B surface antigen (HBsAg) on it, based on "The Technical Standards for Disinfection" set by the Ministry of Health of China, and the effectiveness of its disinfection and sterilization was evaluated as well.
RESULTSAnti-suction handpieces were used only in 5.9% of the hospitals or departments, 94.1% of them without anti-suction devices. Cleansing disinfection was applied for used dental handpieces in 62.9% of the dental-care hospitals and the departments of stomatology, with an effective rate of 26.17%, immersing disinfection in 10.0%, with an effective rate of 55.88%, and autoclave in 27.1%, with an effective rate of 80.43%. Used dental handpieces in the hospitals and departments of stomatology in general hospitals were all contaminated by bacteria and HBsAg could be detected in 1.67% of them.
CONCLUSIONSDental handpieces without anti-suction should be replaced soon by those with it or comprehensive dental unit with anti-suction device should be used. Used dental handpieces must be sterilized effectively before next use. Awareness on prevention from cross-infection should be improved for dental-care professional staff and operation of sterilization should be standardized.
Cross Infection ; prevention & control ; Dental Instruments ; microbiology ; Equipment Contamination ; prevention & control ; Hepatitis B Surface Antigens ; analysis ; Humans ; Sterilization ; methods