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Garcia NB, Oliveira AC. Endoscope channel drying, storage, and conditions after reprocessing: How safe are they in clinical practice? REVISTA DE GASTROENTEROLOGIA DE MEXICO (ENGLISH) 2024:S2255-534X(24)00031-8. [PMID: 38644085 DOI: 10.1016/j.rgmxen.2023.06.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 06/25/2023] [Indexed: 04/23/2024]
Abstract
INTRODUCTION AND AIMS Adequate drying and proper storage of flexible endoscopes are essential for maintaining quality in their reprocessing. The aim of the present study was to evaluate the drying stages, storage, and channel conditions of endoscopes through borescope inspection. MATERIAL AND METHODS The personnel responsible for endoscope reprocessing were interviewed. Storage conditions at 10 endoscopy facilities were inspected and an internal examination of the channels and ports of the stored equipment was carried out, utilizing a borescope. A total of 74 stored endoscope channels were evaluated. RESULTS Only 10% of the facilities inspected utilized transport cases for storage and only 10% had rooms exclusively used for storage. Sixty percent of the facilities did not perform any shelf-life control. All the channels evaluated were scratched and fluids were present on 69% of them. CONCLUSIONS Endoscope reprocessing can be improved through the implementation of drying and storage control and validation tools, as well as the use of borescopes and periodic clinical audits.
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Affiliation(s)
- N B Garcia
- Escuela de Enfermería, Universidad Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil.
| | - A C Oliveira
- Escuela de Enfermería, Universidad Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
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2
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Cimen C, Bathoorn E, Loeve AJ, Fliss M, Berends MS, Nagengast WB, Hamprecht A, Voss A, Lokate M. Uncovering the spread of drug-resistant bacteria through next-generation sequencing based surveillance: transmission of extended-spectrum β-lactamase-producing Enterobacterales by a contaminated duodenoscope. Antimicrob Resist Infect Control 2024; 13:31. [PMID: 38459544 PMCID: PMC10924313 DOI: 10.1186/s13756-024-01386-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Accepted: 03/03/2024] [Indexed: 03/10/2024] Open
Abstract
Contamination of duodenoscopes is a significant concern due to the transmission of multidrug-resistant organisms (MDROs) among patients who undergo endoscopic retrograde cholangiopancreatography (ERCP), resulting in outbreaks worldwide. In July 2020, it was determined that three different patients, all had undergone ERCP with the same duodenoscope, were infected. Two patients were infected with blaCTX-M-15 encoding Citrobacter freundii, one experiencing a bloodstream infection and the other a urinary tract infection, while another patient had a bloodstream infection caused by blaSHV-12 encoding Klebsiella pneumoniae. Molecular characterization of isolates was available as every ESBL-producing isolate undergoes Next-Generation Sequencing (NGS) for comprehensive genomic analysis in our center. After withdrawing the suspected duodenoscope, we initiated comprehensive epidemiological research, encompassing case investigations, along with a thorough duodenoscope investigation. Screening of patients who had undergone ERCP with the implicated duodenoscope, as well as a selection of hospitalized patients who had ERCP with a different duodenoscope during the outbreak period, led to the discovery of three additional cases of colonization in addition to the three infections initially detected. No microorganisms were detected in eight routine culture samples retrieved from the suspected duodenoscope. Only after destructive dismantling of the duodenoscope, the forceps elevator was found to be positive for blaSHV-12 encoding K. pneumoniae which was identical to the isolates detected in three patients. This study highlights the importance of using NGS to monitor the transmission of MDROs and demonstrates that standard cultures may fail to detect contaminated medical equipment such as duodenoscopes.
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Affiliation(s)
- Cansu Cimen
- Department of Medical Microbiology and Infection Prevention, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9700RB, Groningen, The Netherlands
- Institute for Medical Microbiology and Virology, University of Oldenburg, Oldenburg, Germany
| | - Erik Bathoorn
- Department of Medical Microbiology and Infection Prevention, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9700RB, Groningen, The Netherlands
| | - Arjo J Loeve
- Department of Biomechanical Engineering, Faculty of Mechanical Engineering, Delft University of Technology, Delft, The Netherlands
| | - Monika Fliss
- Department of Medical Microbiology and Infection Prevention, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9700RB, Groningen, The Netherlands
| | - Matthijs S Berends
- Department of Medical Microbiology and Infection Prevention, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9700RB, Groningen, The Netherlands
- Certe Medical Diagnostics and Advice Foundation, Department of Medical Epidemiology, Groningen, The Netherlands
| | - Wouter B Nagengast
- Department of Gastroenterology, University of Groningen, University Medical Centre Groningen, Groningen, The Netherlands
| | - Axel Hamprecht
- Institute for Medical Microbiology and Virology, University of Oldenburg, Oldenburg, Germany
| | - Andreas Voss
- Department of Medical Microbiology and Infection Prevention, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9700RB, Groningen, The Netherlands
| | - Mariëtte Lokate
- Department of Medical Microbiology and Infection Prevention, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9700RB, Groningen, The Netherlands.
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Cheng SH, Lin YT, Lu HT, Tsuei YC, Chu W, Chu WC. The Evolution of Spinal Endoscopy: Design and Image Analysis of a Single-Use Digital Endoscope Versus Traditional Optic Endoscope. Bioengineering (Basel) 2024; 11:99. [PMID: 38275579 PMCID: PMC10813680 DOI: 10.3390/bioengineering11010099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 01/11/2024] [Accepted: 01/17/2024] [Indexed: 01/27/2024] Open
Abstract
Spinal endoscopy has evolved significantly since its inception, offering minimally invasive solutions for various spinal pathologies. This study introduces a promising innovation in spinal endoscopy-a single-use digital endoscope designed to overcome the drawbacks of traditional optic endoscopes. Traditional endoscopes, despite their utility, present challenges such as fragility, complex disinfection processes, weight issues, and susceptibility to mechanical malfunctions. The digital endoscope, with its disposable nature, lighter weight, and improved image quality, aims to enhance surgical procedures and patient safety. The digital endoscope system comprises a 30-degree 1000 × 1000 pixel resolution camera sensor with a 4.3 mm working channel, and LED light sources replacing optical fibers. The all-in-one touch screen tablet serves as the host computer, providing portability and simplified operation. Image comparisons between the digital and optic endoscopes revealed advantages in the form of increased field of view, lesser distortion, greater close-range resolution, and enhanced luminance. The single-use digital endoscope demonstrates great potential for revolutionizing spine endoscopic surgeries, offering convenience, safety, and superior imaging capabilities compared to traditional optic endoscopes.
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Affiliation(s)
- Shih-Hao Cheng
- Institute of Biomedical Engineering, National Yang-Ming Chiao-Tung University, Taipei 11221, Taiwan; (S.-H.C.); (Y.-T.L.); (Y.-C.T.)
- Department of Orthopedics, Cheng Hsin General Hospital, Taipei 11221, Taiwan
| | - Yen-Tsung Lin
- Institute of Biomedical Engineering, National Yang-Ming Chiao-Tung University, Taipei 11221, Taiwan; (S.-H.C.); (Y.-T.L.); (Y.-C.T.)
| | - Hsin-Tzu Lu
- Institute of Biomedical Engineering, National Yang-Ming Chiao-Tung University, Taipei 11221, Taiwan; (S.-H.C.); (Y.-T.L.); (Y.-C.T.)
| | - Yu-Chuan Tsuei
- Institute of Biomedical Engineering, National Yang-Ming Chiao-Tung University, Taipei 11221, Taiwan; (S.-H.C.); (Y.-T.L.); (Y.-C.T.)
- Department of Orthopedics, Cheng Hsin General Hospital, Taipei 11221, Taiwan
| | - William Chu
- Institute of Biomedical Engineering, National Yang-Ming Chiao-Tung University, Taipei 11221, Taiwan; (S.-H.C.); (Y.-T.L.); (Y.-C.T.)
- Department of Orthopedics, Cheng Hsin General Hospital, Taipei 11221, Taiwan
- School of Nursing, National Taipei University of Nursing and Health Sciences, Taipei 11221, Taiwan
| | - Woei-Chyn Chu
- Institute of Biomedical Engineering, National Yang-Ming Chiao-Tung University, Taipei 11221, Taiwan; (S.-H.C.); (Y.-T.L.); (Y.-C.T.)
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Weber DJ, Rutala WA, Anderson DJ, Sickbert-Bennett EE. Biofilms on medical instruments and surfaces: Do they interfere with instrument reprocessing and surface disinfection. Am J Infect Control 2023; 51:A114-A119. [PMID: 37890940 DOI: 10.1016/j.ajic.2023.04.158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2023] [Accepted: 04/10/2023] [Indexed: 10/29/2023]
Abstract
BACKGROUND Biofilms are surface-attached communities of bacteria embedded in an extracellular matrix. This matrix shields the resident cells from desiccation, chemical perturbation, invasion by other bacteria, and confers reduced susceptibility to antibiotics and disinfectants. There is growing evidence that biofilms on medical instruments (especially endoscopes) and environmental surfaces interfere with cleaning and disinfection. METHODS The English literature on the impact of biofilms in medicine was reviewed with a focus on the impact of biofilms on reusable semicritical medical instruments and hospital environmental surfaces. RESULTS Biofilms are frequently present on hospital environmental surfaces and reusable medical equipment. Important health care...associated pathogens that readily form biofilms on environmental surfaces include Staphylococcus aureus, Pseudomonas aeruginosa, and Candida auris. Evidence has demonstrated that biofilms interfere with cleaning and disinfection. DISCUSSION New technologies such as ..úself-disinfecting..Ñ surfaces or continuous room disinfection systems may reduce or disrupt biofilm formation and are under study to reduce the impact of the contaminated surface environment on health care...associated infections. CONCLUSIONS Future research is urgently needed to develop methods to reduce or eliminate biofilms from forming on implantable medical devices, reusable medical equipment, and hospital surfaces.
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Affiliation(s)
- David J Weber
- Division of Infectious Diseases, School of Medicine, University of North Carolina, Chapel Hill, NC; Department of Infection Prevention, UNC Medical Center, Chapel Hill, NC.
| | - William A Rutala
- Division of Infectious Diseases, School of Medicine, University of North Carolina, Chapel Hill, NC
| | - Deverick J Anderson
- Division of Infectious Diseases, School of Medicine, Duke University, Durham, NC
| | - Emily E Sickbert-Bennett
- Division of Infectious Diseases, School of Medicine, University of North Carolina, Chapel Hill, NC; Department of Infection Prevention, UNC Medical Center, Chapel Hill, NC
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Garcia NB, Oliveira ACD. What Are the Ready-to-Use Endoscope Channels Hiding?: Unraveling the Risks of Safe Reuse. Gastroenterol Nurs 2023; 46:455-464. [PMID: 37700439 DOI: 10.1097/sga.0000000000000767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/10/2022] [Accepted: 05/26/2023] [Indexed: 09/14/2023] Open
Abstract
Contamination due to failures or omissions in the reprocessing steps of gastrointestinal endoscopes is common in clinical practice. Ensuring the proper execution of each step is a challenge for reprocessing personnel. This cross-sectional study was conducted in an endoscopy setting between March and May 2021. We performed interviews about reprocessing practices, analyzed the life history of the equipment, and performed inspections through a borescope video of gastrointestinal endoscope channels that were stored and ready for use. A borescope is a complementary tool used to validate endoscope reprocessing, evaluate the internal visualization of channels, and identify changes that can compromise the safety of its use, which are often not detected in the leak test. Thirteen biopsy channels from stored gastrointestinal endoscopes were inspected. We found that 85% had stains and grooves, 69% contained moisture, and 46% had debris. There was at least one noncompliance issue in all of the channels inspected.
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Affiliation(s)
- Naiara Bussolotti Garcia
- Núcleo de Estudos e pesquisas em Infecção Relacionada ao Cuidar em Saúde NEPIRCS, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
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Rutala WA, Donskey CJ, Weber DJ. Disinfection and sterilization: New technologies. Am J Infect Control 2023; 51:A13-A21. [PMID: 37890943 DOI: 10.1016/j.ajic.2023.01.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Accepted: 01/05/2023] [Indexed: 10/29/2023]
Abstract
BACKGROUND Adherence to professional guidelines and/or manufacturer's instructions for use regarding proper disinfection and sterilization of medical devices is crucial to preventing cross transmission of pathogens between patients. Emerging pathogens (e.g., Candida auris) and complex medical devices provide new challenges. METHODS A search for published English articles on new disinfection and sterilization technologies was conducted by Google, Google scholar and PubMed. RESULTS Several new disinfection methods or products (e.g., electrostatic spraying, new sporicides, colorized disinfectants, "no touch" room decontamination, continuous room decontamination) and sterilization technologies (e.g., new sterilization technology for endoscopes) were identified. CONCLUSIONS These technologies should reduce patient risk.
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Affiliation(s)
- William A Rutala
- Statewide Program for Infection Control and Epidemiology, University of North Carolina (UNC) School of Medicine, Chapel Hill, NC; Division of Infectious Diseases, UNC School of Medicine, Chapel Hill, NC.
| | - Curtis J Donskey
- Geriatric Research, Education and Clinical Care, Louis Stokes Cleveland VA Medical Center, Cleveland, OH
| | - David J Weber
- Statewide Program for Infection Control and Epidemiology, University of North Carolina (UNC) School of Medicine, Chapel Hill, NC; Division of Infectious Diseases, UNC School of Medicine, Chapel Hill, NC; Infection Prevention, University of North Carolina Medical Center, Chapel Hill, NC
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7
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Rutala WA, Weber DJ. Reprocessing semicritical items: An overview and an update on the shift from HLD to sterilization for endoscopes. Am J Infect Control 2023; 51:A96-A106. [PMID: 37890958 DOI: 10.1016/j.ajic.2023.01.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Accepted: 01/04/2023] [Indexed: 10/29/2023]
Abstract
BACKGROUND Semicritical medical devices are defined as items that come into contact with mucous membranes or nonintact skin (e.g., gastrointestinal endoscopes, endocavitary probes). Such medical devices require minimally high-level disinfection. METHODS Analyze the methods used to reprocess semicritical medical devices and identify methods and new technologies to reduce the risk of infection. RESULTS The reprocessing methods for semicritical medical devices is described as well as a shift from high-level disinfection to sterilization for lumened endoscopes. CONCLUSIONS Strict adherence to current guidelines and transition to sterilization for endoscopes is required as more outbreaks have been linked to inadequately disinfected endoscopes and other semicritical items than any other reusable medical devices.
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Affiliation(s)
- William A Rutala
- Statewide Program for Infection Control and Epidemiology, University of North Carolina Hospitals, Chapel Hill, NC; Division of Infectious Diseases, UNC School of Medicine, Chapel Hill, NC.
| | - David J Weber
- Statewide Program for Infection Control and Epidemiology, University of North Carolina Hospitals, Chapel Hill, NC; Division of Infectious Diseases, UNC School of Medicine, Chapel Hill, NC; Department of Infection Prevention, Hospital Epidemiology, University of North Carolina Hospitals, Chapel Hill, NC
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Rutala WA, Boyce JM, Weber DJ. Disinfection, sterilization and antisepsis: An overview. Am J Infect Control 2023; 51:A3-A12. [PMID: 37890951 DOI: 10.1016/j.ajic.2023.01.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Accepted: 01/05/2023] [Indexed: 10/29/2023]
Abstract
BACKGROUND Each year in the United States there are approximately 100,000,000 outpatient/inpatient surgical procedures. Each of these procedures involves contact by a medical device or surgical instrument with a patient's sterile tissue and/or mucous membrane. A major risk of all such procedures is the introduction of infection. METHODS We searched published literature for articles on the use and effectiveness of disinfectants, sterilization methods and antiseptics. RESULTS The level of disinfection is dependent on the intended use of the object: critical (items that contact sterile tissue such as surgical instruments), semicritical (items that contact mucous membrane such as endoscopes), and noncritical (devices that contact only intact skin such as stethoscopes) items require sterilization, high-level disinfection and low-level disinfection, respectively. Cleaning must always precede high-level disinfection and sterilization. Antiseptics are essential to infection prevention as part of a hand hygiene program as well as other uses such as surgical hand antisepsis and pre-operative patient skin preparation. CONCLUSIONS When properly used, disinfection and sterilization can ensure the safe use of invasive and non-invasive medical devices. Cleaning should always precede high-level disinfection and sterilization. Strict adherence to current disinfection and sterilization guidelines is essential to prevent patient infections and exposures to infectious agents.
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Affiliation(s)
- William A Rutala
- Statewide Program for Infection Control and Epidemiology, UNC School of Medicine, Chapel Hill, NC; Division of Infectious Diseases, UNC School of Medicine, Chapel Hill, NC.
| | - John M Boyce
- J.M. Boyce Consulting, Boyce Consulting, LLC, Middletown, CT
| | - David J Weber
- Statewide Program for Infection Control and Epidemiology, UNC School of Medicine, Chapel Hill, NC; Division of Infectious Diseases, UNC School of Medicine, Chapel Hill, NC; Infection Prevention, University of North Carolina Medical Center, Chapel Hill, NC
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Gail J, Schmidt A, Thoma MH. A Novel Approach on Dielectric Barrier Discharge Using Printed Circuit Boards. IEEE TRANSACTIONS ON RADIATION AND PLASMA MEDICAL SCIENCES 2023. [DOI: 10.1109/trpms.2022.3210651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2023]
Affiliation(s)
- Jonathan Gail
- First Physical Institute, Justus Liebig University, Giessen, Germany
| | - Alisa Schmidt
- First Physical Institute, Justus Liebig University, Giessen, Germany
| | - Markus H. Thoma
- First Physical Institute, Justus Liebig University, Giessen, Germany
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Travis HS, Russell RV, Kovaleva J. Cross-contamination rate of reusable flexible bronchoscopes: A systematic literature review and meta-analysis. J Infect Prev 2023; 24:95-102. [PMID: 37065274 PMCID: PMC10090576 DOI: 10.1177/17571774231158203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Accepted: 01/25/2023] [Indexed: 02/27/2023] Open
Abstract
Background Bronchoscopy is generally a safe and efficient procedure. However, the risk of cross-contamination with reusable flexible bronchoscopes (RFB) has been detected in several outbreaks worldwide. Aim To estimate the average cross-contamination rate of patient-ready RFBs based on available published data. Methods We performed a systematic literature review in PubMed and Embase to investigate the cross-contamination rate of RFB. Included studies identified indicator organisms or colony forming units (CFU) levels, and total number of samples >10. The Contamination threshold was defined according to the European Society of Gastrointestinal Endoscopy and European Society of Gastrointestinal Endoscopy Nurse and Associates (ESGE-ESGENA) guidelines. To calculate the total contamination rate, a random effects model was applied. Heterogeneity was analysed via a Q-test and illustrated in a forest plot. Publication bias was analysed via the Egger’s regression test and illustrated in a funnel plot. Results Eight studies fulfilled our inclusion criteria. The random effects model included 2169 samples and 149 events (positive tests). The total RFB cross-contamination rate was 8.69% ± 1.86 (standard division [SD]) (95% confidence interval [CI]: 5.06–12.33%). The result showed significant heterogeneity of 90% and publication bias. Discussion Significant heterogeneity and publication bias is likely associated with varying methodology and aversion towards publishing negative findings, respectively. Based on the cross-contamination rate an infection control paradigm shift is needed to ensure patient safety. We recommend to follow the Spaulding classification and classify RFBs as critical items. Accordingly, infection control measures such as obligatory surveillance, and implementing single-use alternatives must be considered where feasible.
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Affiliation(s)
| | | | - Julia Kovaleva
- Clinical Microbiologist/Clinical Pathologist, Labo Nuytinck-Anacura, Evergem, Belgium
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Infection control in the bronchoscopy suite: effective reprocessing and disinfection of reusable bronchoscopes. Curr Opin Pulm Med 2023; 29:21-28. [PMID: 36354125 DOI: 10.1097/mcp.0000000000000925] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
PURPOSE OF REVIEW With advancements in technology, flexible bronchoscopes have become thinner in diameter and in need of more thorough reprocessing to prevent infection transmission than ever before. Many experienced bronchoscopists are not aware of the critical steps involved in effective bronchoscope reprocessing and we hope to bridge this gap by describing this process in detail. RECENT FINDINGS Bronchoscope reprocessing includes several distinct steps (precleaning, leak testing, manual cleaning, visual inspection, terminal reprocessing, rinsing and drying). Each step is comprehensive and needs to be carried out systematically by trained personnel. Failure of any step can lead to serious downstream events such as outbreaks and pseudo-outbreaks. Some experts now recommend sterilization when feasible, although high-level disinfection remains the minimum standard. We also will review some literature on the utility of borescopes, automated endoscope reprocessors and disposable bronchoscopes. SUMMARY Our article will focus on the most recent recommendations for effective reprocessing and disinfection of reusable bronchoscopes.
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Barakat MT, Ghosh S, Banerjee S. Cost utility analysis of strategies for minimizing risk of duodenoscope-related infections. Gastrointest Endosc 2022; 95:929-938.e2. [PMID: 35026281 DOI: 10.1016/j.gie.2022.01.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Accepted: 01/03/2022] [Indexed: 02/08/2023]
Abstract
BACKGROUND AND AIMS Transmission of multidrug-resistant organisms by duodenoscopes during ERCP is problematical. The U.S. Food and Drug Administration recently recommended transitioning away from reusable fixed-endcap duodenoscopes to those with innovative device designs that make reprocessing easier, more effective, or unnecessary. Partially disposable (PD) duodenoscopes with disposable endcaps and fully disposable (FD) duodenoscopes are now available. We assessed the relative cost of approaches to minimizing infection transmission, taking into account duodenoscope-transmitted infection cost. METHODS We developed a Monte Carlo analysis model in R (R Foundation for Statistical Computing, Vienna, Austria) with a multistate trial framework to assess the cost utility of various approaches: single high-level disinfection (HLD), double HLD, ethylene oxide (EtO) sterilization, culture and hold, PD duodenoscopes, and FD duodenoscopes. We simulated quality-adjusted life years (QALYs) lost by duodenoscope-transmitted infection and factored this into the average cost for each approach. RESULTS At infection transmission rates <1%, PD duodenoscopes were most favorable from a cost utility standpoint in our base model. The FD duodenoscope minimizes the potential for infection transmission and is more favorable from a cost utility standpoint than use of reprocessable duodenoscopes after single or double HLD at all infection rates, EtO sterilization for infection rates >.32%, and culture and hold for infection rates >.56%. Accounting for alternate scenarios of variation in hospital volume, QALY value, post-ERCP lifespan, and environmental cost shifted cost utility profiles. CONCLUSIONS Our model indicates that PD duodenoscopes represent the most favorable option from a cost utility standpoint for ERCP, with anticipated very low infection transmission rates and a low-cost disposable element. These data underscore the importance of cost calculations that account for the potential for infection transmission and associated patient morbidity/mortality.
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Affiliation(s)
- Monique T Barakat
- Division of Gastroenterology and Hepatology, Stanford University School of Medicine, Stanford, California, USA
| | - Swarnadip Ghosh
- Department of Statistics, Stanford University, Stanford, California, USA
| | - Subhas Banerjee
- Division of Gastroenterology and Hepatology, Stanford University School of Medicine, Stanford, California, USA
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Chung J, Sepunaru L, Plaxco KW. On the Disinfection of Electrochemical Aptamer-Based Sensors. ECS SENSORS PLUS 2022; 1. [PMID: 36452064 PMCID: PMC9703871 DOI: 10.1149/2754-2726/ac60b2] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Electrochemical aptamer-based (EAB) sensors encompass the only biosensor approach yet reported that is simultaneously: (1) independent of the chemical or enzymatic reactivity of its target, rendering it general; (2) continuous and real-time; and (3) selective enough to deploy in situ in the living body. Consistent with this, in vivo EAB sensors supporting the seconds-resolved, real-time measurement of multiple drugs and metabolites have been reported, suggesting the approach may prove of value in biomedical research and the diagnosis, treatment, and monitoring of disease. However, to apply these devices in long-duration animal models, much less in human patients, requires that they be free of any significant pathogen load. Thus motivated, here we have characterized the compatibility of EAB sensors with standard sterilization and high-level disinfection techniques. Doing so, we find that, while many lead to significant sensor degradation, treatment with CIDEX OPA (0.55% ortho-phthalaldehyde) leads to effective disinfection without causing any detectable loss in sensor performance.
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Affiliation(s)
- Julia Chung
- Interdepartmental Program in Biomedical Science and Engineering, University of California at Santa Barbara, Santa Barbara, California 93106, USA
| | - Lior Sepunaru
- Department of Chemistry and Biochemistry, University of California at Santa Barbara, Santa Barbara, California 93106, USA
| | - Kevin W. Plaxco
- Interdepartmental Program in Biomedical Science and Engineering, University of California at Santa Barbara, Santa Barbara, California 93106, USA
- Department of Chemistry and Biochemistry, University of California at Santa Barbara, Santa Barbara, California 93106, USA
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Ellis J, Park AH, Prussin A. A cost comparison between reusable flexible and disposable laryngoscopes. Am J Otolaryngol 2022; 43:103321. [PMID: 34953249 DOI: 10.1016/j.amjoto.2021.103321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Accepted: 12/08/2021] [Indexed: 11/01/2022]
Abstract
OBJECTIVES To compare the costs of disposable laryngoscopes to reusable scopes in outpatient and inpatient settings. METHODS The total variable and fixed costs involved in flexible scope reprocessing were collected from two general otolaryngology clinics, a pediatric otolaryngology clinic, and a children's hospital. Variable costs of disposable materials and labor were collected from 65 scope reprocessing events to identify the cost of reprocessing. Fixed costs of scope maintenance, monitors, video towers, and storage equipment were collected from financial records. Fixed and variable costs were analyzed to identify the cost per scope event. The costs were then compared to a theoretical model where disposable scopes were used to meet the volume demands of each clinic and children's hospital setting. The model of disposable scopes was generated after obtaining volume costs specific to each setting from a disposable scope company. RESULTS The average cost of a reusable scope model per scope event was $66.02 ± 4.49 at the three clinics and $130.66 at the children's hospital. The average cost of the disposable scope model per scope event was $152.55 ± 0.55 in the three clinics and $172.61 in the children's hospital. The cost differences were $86.53 ± 3.96 and $41.95 respectively. CONCLUSIONS In an outpatient clinic, reusable scopes are less expensive than a disposable scope model. In children's hospital inpatient setting, the difference in costs between disposable and reusable scopes is lower. When considering other non-economic factors, disposable scopes may be a feasible option, especially in the children's hospital setting.
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Kwakman JA, Erler NS, Vos MC, Bruno MJ. Risk evaluation of duodenoscope-associated infections in the Netherlands calls for a heightened awareness of device-related infections: a systematic review. Endoscopy 2022; 54:148-155. [PMID: 33915575 DOI: 10.1055/a-1467-6294] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND The risk of exogenous infections from endoscopic procedures is often cited as almost negligible (1 infection in 1.8 million procedures); however, this risk is based on older literature and does not seem to match the number of infectious outbreaks due to contaminated duodenoscopes reported after endoscopic retrograde cholangiopancreatography (ERCP). Using Dutch data, we aimed to estimate the minimum risk of duodenoscope-associated infection (DAI) and colonization (DAC) in patients undergoing ERCP. METHODS A systematic literature search identified all DAI outbreaks in the Netherlands reported between 2008 and 2019. Included cases were confirmed by molecular matching of patient and duodenoscope cultures. Risk ratios were calculated based on the total number of ERCPs performed during the study period. RESULTS Three outbreaks were reported and published between 2008 and 2018, including 21 confirmed DAI cases and 52 confirmed DAC cases. The estimated number of ERCPs performed during the same period was 181 209-227 006. The calculated minimum estimated DAI risk was approximately 0.01 % and the minimum estimated DAC risk was 0.023 %-0.029 %. CONCLUSIONS The estimated risk of DAI in Dutch ERCP practice was at least 180 times higher than previously published risk estimates. The actual risk is likely to be (much) higher due to underreporting of infections caused by multidrug-resistant organisms and sensitive bacteria. Greater awareness by healthcare personnel involved in endoscopy and endoscope cleaning is required, as well as innovative technical solutions to contain and ultimately eliminate DAIs.
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Affiliation(s)
- Judith A Kwakman
- Department of Gastroenterology and Hepatology, Erasmus Medical Center, Rotterdam, the Netherlands.,Department of Microbiology, Erasmus Medical Center, Rotterdam, the Netherlands
| | - Nicole S Erler
- Department of Biostatistics, Erasmus Medical Center, Rotterdam, the Netherlands
| | - Margreet C Vos
- Department of Microbiology, Erasmus Medical Center, Rotterdam, the Netherlands
| | - Marco J Bruno
- Department of Gastroenterology and Hepatology, Erasmus Medical Center, Rotterdam, the Netherlands
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16
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Garcia NB, Oliveira ACD. Storage of gastrointestinal endoscopes: when is the safe time for re-use? Rev Bras Enferm 2022; 75:e20210216. [DOI: 10.1590/0034-7167-2021-0216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2020] [Accepted: 10/13/2021] [Indexed: 11/22/2022] Open
Abstract
ABSTRACT Objectives: to identify the safe storage time for the use of flexible gastrointestinal endoscopes after high-level disinfection, as well as the defining criteria for this time. Methods: an integrative literature review was carried out in the Virtual Health Library, PubMed, Scopus, and Web of Science, considering original articles published since 2000. Results: eleven articles were selected, whose storage times ranged from 1 to 56 days, with a predominance of one to seven days (73%). Several criteria were used to define this time, predominantly the premise of efficient processing (100%), use of alcohol flush (64%), use of drying cabinets (18%), among others. Conclusions: the criteria for determining the storage time did not show a consensus for clinical practice. Expanding the discussion of this theme with the definition of the minimum necessary conditions is of fundamental importance for the reduction of risks and safety of the procedure and the patient.
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17
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de Souza Hajar K, Quartim de Moraes Bruna C, Uchikawa Graziano K. Infection Transmission Associated With Contaminated Ultrasound Probes: A Systematic Review. AORN J 2021; 115:42-51. [PMID: 34958475 DOI: 10.1002/aorn.13572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 03/10/2021] [Accepted: 03/26/2021] [Indexed: 11/07/2022]
Abstract
A systematic review of seven studies on infections related to contaminated ultrasound probes showed that the infections were related to a failure in the decontamination process of ultrasound devices used on immature skin of neonates in an intensive care unit and transesophageal echocardiography probes. Six of the studies involved outbreaks in patients who underwent transesophageal echocardiography either during or after surgery or as a part of treatment for a nonsurgical cardiac condition. The evidence shows links between the infection outbreaks and environmental contamination, lack of standardized ultrasound probe disinfection processes, inadequate storage, and lack of monitoring of probe integrity. When personnel addressed the deficiencies (eg, improving the disinfection process, cleaning the probes immediately after use, inspecting the probes for defects), the infections ceased. Personnel involved with the reprocessing of ultrasound probes should clean, disinfect, inspect, and store ultrasound probes in a manner that maintains device integrity and prevents contamination.
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18
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Sood G, Perl TM. Outbreaks in Health Care Settings. Infect Dis Clin North Am 2021; 35:631-666. [PMID: 34362537 DOI: 10.1016/j.idc.2021.04.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Outbreaks and pseudo-outbreaks in health care settings are complex and should be evaluated systematically using epidemiologic and molecular tools. Outbreaks result from failures of infection prevention practices, inadequate staffing, and undertrained or overcommitted health care personnel. Contaminated hands, equipment, supplies, water, ventilation systems, and environment may also contribute. Neonatal intensive care, endoscopy, oncology, and transplant units are areas at particular risk. Procedures, such as bronchoscopy and endoscopy, are sources of infection when cleaning and disinfection processes are inadequate. New types of equipment can be introduced and lead to contamination or equipment and medications can be contaminated at the manufacturing source.
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Affiliation(s)
- Geeta Sood
- Division of Infectious Diseases, Johns Hopkins University School of Medicine, Johns Hopkins Bayview Medical Center, Mason F. Lord Building, Center Tower, 3rd Floor, 5200 Eastern Avenue, Baltimore, MD 21224, USA.
| | - Trish M Perl
- Division of Infectious Diseases and Geographic Medicine, UT Southwestern Medical Center, 5323 Harry Hines Boulevard, Y7;302, Dallas, TX 75390, USA
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19
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Huang HE, Yen SY, Chu CF, Suk FM, Lien GS, Liu CW. Autonomous navigation of a magnetic colonoscope using force sensing and a heuristic search algorithm. Sci Rep 2021; 11:16491. [PMID: 34389760 PMCID: PMC8363733 DOI: 10.1038/s41598-021-95760-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Accepted: 07/30/2021] [Indexed: 12/22/2022] Open
Abstract
This paper presents an autonomous navigation system for cost-effective magnetic-assisted colonoscopy, employing force-based sensors, an actuator, a proportional-integrator controller and a real-time heuristic searching method. The force sensing system uses load cells installed between the robotic arm and external permanent magnets to derive attractive force data as the basis for real-time surgical safety monitoring and tracking information to navigate the disposable magnetic colonoscope. The average tracking accuracy on magnetic field navigator (MFN) platform in x-axis and y-axis are 1.14 ± 0.59 mm and 1.61 ± 0.45 mm, respectively, presented in mean error ± standard deviation. The average detectable radius of the tracking system is 15 cm. Three simulations of path planning algorithms are presented and the learning real-time A* (LRTA*) algorithm with our proposed directional heuristic evaluation design has the best performance. It takes 75 steps to complete the traveling in unknown synthetic colon map. By integrating the force-based sensing technology and LRTA* path planning algorithm, the average time required to complete autonomous navigation of a highly realistic colonoscopy training model on the MFN platform is 15 min 38 s and the intubation rate is 83.33%. All autonomous navigation experiments are completed without intervention by the operator.
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Affiliation(s)
- Hao-En Huang
- Department of Electrical Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd., Taipei, 10617, Taiwan (R.O.C.).
| | - Sheng-Yang Yen
- Department of Electrical Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd., Taipei, 10617, Taiwan (R.O.C.)
| | - Chia-Feng Chu
- Department of Electrical Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd., Taipei, 10617, Taiwan (R.O.C.)
| | - Fat-Moon Suk
- Division of Gastroenterology, Department of Internal Medicine, Taipei Municipal Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan (R.O.C.).,Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan (R.O.C.)
| | - Gi-Shih Lien
- Division of Gastroenterology, Department of Internal Medicine, Taipei Municipal Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan (R.O.C.).,Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan (R.O.C.)
| | - Chih-Wen Liu
- Department of Electrical Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd., Taipei, 10617, Taiwan (R.O.C.)
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20
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Does blood on "dirty" instruments interfere with the effectiveness of sterilization technologies? Infect Control Hosp Epidemiol 2021; 43:1262-1264. [PMID: 34016195 DOI: 10.1017/ice.2021.202] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
We evaluated the robustness of sterilization technologies when spores and bacteria were placed on "dirty" instruments and overlaid with blood. The results illustrate that steam sterilization is the most effective sterilization technology with the largest margin of safety, followed by ethylene oxide and hydrogen peroxide gas plasma.
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21
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Omidbakhsh N, Manohar S, Vu R, Nowruzi K. Flexible gastrointestinal endoscope processing challenges, current issues and future perspectives. J Hosp Infect 2021; 110:133-138. [PMID: 33549767 DOI: 10.1016/j.jhin.2021.01.021] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 01/14/2021] [Accepted: 01/14/2021] [Indexed: 11/18/2022]
Abstract
BACKGROUND At present, the most frequent method for processing flexible gastrointestinal (GI) endoscopes is cleaning followed by high-level disinfection as terminal sterilization is often not practicable. Post-processing monitoring studies consistently show high levels of positive cultures remaining on endoscopes, which can lead to patient infection and even fatality. The processing deficiency is attributed to the complex design of endoscopes, incomplete cleaning, formation of biofilms and lack of margin of safety with high-level disinfection. OBJECTIVE To demonstrate that flexible GI endoscopes can be practicably terminally sterilized. METHODS An endoscope sterilization cycle was developed in a vaporized hydrogen peroxide sterilization system. The cycle was used to study the sterilization of flexible GI endoscopes which included colonoscopes and duodenoscope and material compatibility for both original flexible GI endoscopes and those experimentally modified endoscopes using compatible materials. RESULTS Testing demonstrated that the vaporized hydrogen peroxide can sterilize flexible GI endoscopes (colonoscopes, duodenoscope) with a sterility assurance level of 10-6. Additionally, no recoverable survivors were detected when devices were artificially soiled with hard water and serum. Material compatibility test results demonstrated that replacing molybdenum disulphide lubricant with a graphite-based inert lubricant can make them compatible with vaporized hydrogen peroxide sterilizers. CONCLUSION Flexible GI endoscopes can be practicably terminally sterilized using vaporized hydrogen peroxide sterilization technologies if their materials are revised to become compatible.
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Affiliation(s)
- N Omidbakhsh
- Research & Development Department, Advanced Sterilization Products, Irvine, CA, USA.
| | - S Manohar
- Research & Development Department, Advanced Sterilization Products, Irvine, CA, USA
| | - R Vu
- Research & Development Department, Advanced Sterilization Products, Irvine, CA, USA
| | - K Nowruzi
- Research & Development Department, Advanced Sterilization Products, Irvine, CA, USA
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22
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Day LW, Kwok K, Visrodia K, Petersen BT. American Society for Gastrointestinal Endoscopy Infection Control Summit: updates, challenges, and the future of infection control in GI endoscopy. Gastrointest Endosc 2021; 93:1-10. [PMID: 32819676 DOI: 10.1016/j.gie.2020.06.024] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Accepted: 06/09/2020] [Indexed: 02/06/2023]
Affiliation(s)
- Lukejohn W Day
- Division of Gastroenterology and Hepatology, University of California San Francisco, San Francisco, California, USA
| | - Karl Kwok
- Department of Gastroenterology, Kaiser Permanente Los Angeles Medical Center, Los Angeles, California, USA
| | - Kavel Visrodia
- Division of Gastroenterology, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Bret T Petersen
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota, USA
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23
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Barakat MT, Banerjee S. Novel Algorithms for Reprocessing, Drying and Storing Endoscopes. Gastrointest Endosc Clin N Am 2020; 30:677-691. [PMID: 32891225 DOI: 10.1016/j.giec.2020.06.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
After outbreaks of duodenoscope-transmitted infection with multidrug-resistant organisms, it has become clear that institutions must optimize their endoscope reprocessing programs. Standard endoscope reprocessing practices may not represent the ideal approach for preventing transmission of infection related to endoscopy. We discuss multiple approaches to enhance and optimize reprocessing, drying, and storage of standard duodenoscopes. The optimal enhanced duodenoscope reprocessing modality remains to be determined. Acknowledging the challenges and limitations in effectively reprocessing duodenoscopes, the FDA issued a safety communiqué recommending transitioning to either single use disposable duodenoscopes or duodenoscopes with innovative designs that allow more effective reprocessing.
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Affiliation(s)
- Monique T Barakat
- Division of Gastroenterology and Hepatology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Subhas Banerjee
- Division of Gastroenterology and Hepatology, Stanford University School of Medicine, Stanford, CA 94305, USA.
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24
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Larsen S, Russell RV, Ockert LK, Spanos S, Travis HS, Ehlers LH, Mærkedahl A. Rate and impact of duodenoscope contamination: A systematic review and meta-analysis. EClinicalMedicine 2020; 25:100451. [PMID: 32954234 PMCID: PMC7486302 DOI: 10.1016/j.eclinm.2020.100451] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Multiple infection outbreaks have been linked to contaminated duodenoscopes worldwide. However, the contamination rate of patient-ready duodenoscopes varies highly amongst published studies testing this subject. We aimed to estimate the contamination rate of reprocessed patient-ready duodenoscopes for endoscopic retrograde cholangio-pancreatography (ERCP) based on currently available data. METHODS We searched the PubMed and Embase databases from January 1, 2010 until March 10, 2020, for citations investigating contamination rates of reprocessed patient-ready duodenoscopes. Studies not assessing other types of endoscopes than duodenoscopes were excluded from the analysis. Study eligibility and data extraction was evaluated by three reviewers independently. A random-effects model (REM) based on the proportion distribution was used to calculate the pooled total contamination rate of reprocessed patient-ready duodenoscopes. Subgroup analyses were carried out to assess contamination rates when using different reprocessing methods by comparing single high-level disinfection (HLD) with double HLD and ethylene oxide (EtO) gas sterilization. Additionally, we investigated the contamination rate between studies conducted following an outbreak compared to non-outbreak-initiated studies. FINDINGS We identified 15 studies that fulfilled the inclusion, which included 925 contaminated duodenoscopes from 13,112 samples. The calculated total weighted contamination rate was 15.25% ± 0.018 (95% confidence interval [Cl]: 11.74% - 18.75%). The contamination rate after only using HLD was 16.14% ± 0.019 (95% Cl: 12.43% - 19.85%) and after using either dHLD or EtO the contamination rate decreased to 9.20% ± 0.025 (95% Cl: 4.30% - 14.10%). Studies conducted following an outbreak (n=4) showed a 5.72% ± 0.034 (95% Cl: 0.00% - 12.43%) contamination rate, and non-outbreak-initiated studies (n=11) revealed a contamination rate of 21.50% ± 0.031 (95% Cl: 15.35% - 27.64%). INTERPRETATION This is the first meta-analysis to estimate the contamination rate of patient-ready duodenoscopes used for ERCP. Based on the available literature, our analysis demonstrates that there is a 15.25% contamination rate of reprocessed patient-ready duodenoscopes. Additionally, the analysis indicates that dHLD and EtO reprocessing methods are superior to single HLD but still not efficient in regards to cleaning the duodenoscopes properly. Furthermore, studies conducted following an outbreak did not entail a higher contamination rate compared to non-outbreak-initiated studies. FUNDING The authors received no financial support for the research, authorship, and/or publication of this article.
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Key Words
- AGA, American Gastroenterological Association
- AORN, The Joint Commission and The Association of Perioperative Registered Nurses
- Bacterial*
- CDC, Center for Disease Control and Prevention
- CFU, colony-forming units
- CRE, carbapenem-resistant Enterobacteriaceae
- Cl, confidence interval
- Cross infection
- Drug Resistance
- Duodenoscopes
- ERCI, Environmental Risk Communications, Inc.
- ERCP, endoscopic retrograde cholangio-pancreatography
- Equipment contamination
- EtO, ethylene oxide
- FDA, Food & Drug Administration
- HLD, high-level disinfection
- Infection Control
- MDR, multi-drug-resistant
- MeSH, medical subject headings
- Multiple
- PRISMA, Preferred Reporting Items for Systematic Reviews and Meta-Analyses
- REM, random-effects model
- dHLD, double high-level disinfection
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Affiliation(s)
- Sara Larsen
- Ambu A/S, Ambu A/S, Baltorpbakken 13, 2750 Ballerup, Denmark
| | | | | | - Stephen Spanos
- Anesthesia and Acute Pain Department of Anesthesia University of Utah Primary Children's Hospital, United States
| | | | - Lars Holger Ehlers
- Department of Business and Management, Danish Center for Healthcare Improvements, Aalborg University, Aalborg, Denmark
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25
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Comparative evaluation of the microbicidal activity of low-temperature sterilization technologies to steam sterilization. Infect Control Hosp Epidemiol 2020; 41:391-395. [PMID: 32098638 DOI: 10.1017/ice.2020.2] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
OBJECTIVE To compare the microbicidal activity of low-temperature sterilization technologies (vaporized hydrogen peroxide [VHP], ethylene oxide [ETO], and hydrogen peroxide gas plasma [HPGP]) to steam sterilization in the presence of salt and serum to simulate inadequate precleaning. METHODS Test carriers were inoculated with Pseudomonas aeruginosa, Escherichia coli, Staphylococcus aureus, vancomycin-resistant Enterococcus, Mycobacterium terrae, Bacillus atrophaeus spores, Geobacillus stearothermophilus spores, or Clostridiodes difficile spores in the presence of salt and serum and then subjected to 4 sterilization technologies: steam, ETO, VHP and HPGP. RESULTS Steam, ETO, and HPGP sterilization techniques were capable of inactivating the test organisms on stainless steel carriers with a failure rate of 0% (0 of 220), 1.9% (6 of 310), and 1.9% (5 of 270), respectively. The failure rate for VHP was 76.3% (206 of 270). CONCLUSION Steam sterilization is the most effective and had the largest margin of safety, followed by ETO and HPGP, but VHP showed much less efficacy.
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26
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Larsen S, Kalloo A, Hutfless S. The hidden cost of colonoscopy including cost of reprocessing and infection rate: the implications for disposable colonoscopes. Gut 2020; 69:197-200. [PMID: 31413166 PMCID: PMC6984057 DOI: 10.1136/gutjnl-2019-319108] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Revised: 07/23/2019] [Accepted: 08/08/2019] [Indexed: 12/20/2022]
Affiliation(s)
- Sara Larsen
- School of Medicine and Health, Aalborg University, Aalborg, Denmark
| | - Anthony Kalloo
- Department of Medicine, Division of Gastroenterology and Hepatology, Johns Hopkins University, Baltimore, Maryland, United States
| | - Susan Hutfless
- Department of Medicine, Division of Gastroenterology and Hepatology, Johns Hopkins University, Baltimore, Maryland, United States .,Gastrointestinal Epidemiology Research Center, Johns Hopkins University, Baltimore, Maryland, United States.,Department of Epidemiology, Johns Hopkins University Bloomberg School of Public Health, Baltimore, Maryland, United States
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28
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Mehta AC, Avasarala SK, Jain P, Deshwal H, Gildea TR. A Blueprint for Success: Design and Implementation of an Ideal Bronchoscopy Suite. Chest 2019; 157:712-723. [PMID: 31610160 DOI: 10.1016/j.chest.2019.09.024] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2019] [Revised: 08/14/2019] [Accepted: 09/19/2019] [Indexed: 12/22/2022] Open
Abstract
Bronchoscopy is essential to the practice of pulmonary medicine. It is an important diagnostic and therapeutic tool for many disease processes. Bronchoscopy can be performed in a variety of clinical settings, from the bedside to an operating room. Although bronchoscopy has been practiced for more than a century, consensus recommendations from stakeholders have yet to be developed for the planning, implementation, and construction of a bronchoscopy suite. A wide range of procedures can be performed via bronchoscopy; therefore, the required tools and the procedure area must be aligned with the needs of the facility. Designing a bronchoscopy suite is by no means a "one size fits all" process. We present an overview of critical features to be considered in the planning for an ideal bronchoscopy suite. We use the term "ideal" because it represents a subjective conception of what is perfect and does not convey a rigid, universal blueprint.
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Affiliation(s)
- Atul C Mehta
- Respiratory Institute, Cleveland Clinic, Cleveland, OH.
| | | | - Prasoon Jain
- Division of Pulmonary and Critical Care Medicine, Louis A. Johnson VA Medical Center, Clarksburg, WV
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29
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Weber DJ, Sickbert-Bennett EE, Kanamori H, Rutala WA. New and emerging infectious diseases (Ebola, Middle Eastern respiratory syndrome coronavirus, carbapenem-resistant Enterobacteriaceae, Candida auris): Focus on environmental survival and germicide susceptibility. Am J Infect Control 2019; 47S:A29-A38. [PMID: 31146847 PMCID: PMC7132701 DOI: 10.1016/j.ajic.2019.03.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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30
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Abstract
All invasive procedures involve contact by a medical device or surgical instrument with a patient's sterile tissue or mucous membranes. The level of disinfection or sterilization is dependent on the intended use of the object. Critical (items that contact sterile tissue, such as surgical instruments), semicritical (items that contact mucous membranes, such as endoscopes), and noncritical (devices that contact only intact skin, such as stethoscopes) items require sterilization, high-level disinfection, and low-level disinfection, respectively. Cleaning must always precede high-level disinfection and sterilization. Antiseptics are essential to infection prevention as part of a hand hygiene program, as well as other uses, such as surgical hand antisepsis and preoperative skin preparation.
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31
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Abstract
Semicritical medical devices are defined as items that come into contact with mucous membranes or nonintact skin (eg, gastrointestinal endoscopes, endocavitary probes). Such medical devices require minimally high-level disinfection. As many of these items are temperature sensitive, low-temperature chemical methods must be used rather than steam sterilization. Strict adherence to current guidelines is required as more outbreaks have been linked to inadequately cleaned or disinfected endoscopes and other semicritical items than any other reusable medical devices.
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