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Leitner L, D‘incau S, Atkinson A, Kronenberg A, Kessler T, Marschall J. Comparison of bacterial species and antimicrobial resistance between catheter and non-catheter associated urinary tract infections. Eur Urol 2022. [DOI: 10.1016/s0302-2838(22)00133-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Atkinson A, Ellenberger B, Piezzi V, Kaspar T, Endrich O, Leichtle A, Zwahlen M, Marschall J. A Bayesian spatial-temporal model for prevalence estimation of a VRE outbreak in a tertiary care hospital. J Hosp Infect 2022; 122:108-114. [DOI: 10.1016/j.jhin.2021.12.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 12/01/2021] [Accepted: 12/02/2021] [Indexed: 10/19/2022]
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Damonti L, Buetti N, Droz S, Bacher U, Pabst T, Taleghani BM, Baerlocher GM, Marschall J. Prevalence and significance of bacterial contamination of autologous stem cell products. J Hosp Infect 2021; 114:175-179. [PMID: 33864895 DOI: 10.1016/j.jhin.2021.04.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 04/06/2021] [Accepted: 04/12/2021] [Indexed: 10/21/2022]
Abstract
There is limited and conflicting information on the prevalence of contamination of haematopoietic stem and progenitor cell products (HPCPs), and their optimal management remains unclear. The authors reviewed the microbial surveillance data of HPCPs collected between January 2002 and December 2019 for autologous transplantation at the study institution to determine the prevalence of microbial contamination and the potential infectious complications among recipients. Among 3935 HPCPs, 25 (0.6%) were contaminated. Ultimately, 22 patients received contaminated grafts, with pre-emptive antimicrobial therapy initiated in six of these patients. No patients developed subsequent infectious complications. These data suggest that microbial contamination of autologous HPCPs and associated adverse outcomes are rare.
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Affiliation(s)
- L Damonti
- Department of Infectious Diseases, Inselspital, University Hospital Bern, Bern, Switzerland; Ente Ospedaliero Cantonale, Division of Infectious Diseases, Regional Hospital Lugano, Lugano, Switzerland.
| | - N Buetti
- Department of Infectious Diseases, Inselspital, University Hospital Bern, Bern, Switzerland; Infection Control Programme, University of Geneva Hospitals and Faculty of Medicine, Geneva, Switzerland; UMR 1137 IAME Team 5 DeSCID: Decision Sciences in Infectious Diseases, Control and Care Inserm/University Paris Diderot, Sorbonne Paris Cité, Paris, France
| | - S Droz
- Institute for Infectious Diseases, University of Bern, Bern, Switzerland
| | - U Bacher
- Department of Haematology and Central Haematology Laboratory, Inselspital, University Hospital Bern, Bern, Switzerland
| | - T Pabst
- Department of Medical Oncology, Inselspital, University Hospital and University of Bern, Bern, Switzerland
| | - B M Taleghani
- Department of Haematology and Central Haematology Laboratory, Inselspital, University Hospital Bern, Bern, Switzerland
| | - G M Baerlocher
- Laboratory for Cellular Therapies, Department of Haematology and Central Haematology Laboratory, Inselspital, Bern University Hospital, Bern, Switzerland; Laboratory for Haematopoiesis and Molecular Genetics, Department of BioMedical Research, University of Bern, Bern, Switzerland
| | - J Marschall
- Department of Infectious Diseases, Inselspital, University Hospital Bern, Bern, Switzerland
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Marschall J, Kushner G, Flint R, Jones L, Alpert B. Immediate Reconstruction of Segmental Mandibular Defects with Non-Vascular Bone Grafts: A 30-Year Perspective. J Oral Maxillofac Surg 2020. [DOI: 10.1016/j.joms.2020.07.079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Kuenzli AB, Burri S, Casanova C, Sommerstein R, Buetti N, Seth-Smith HMB, Bodmer T, Egli A, Marschall J. Successful management of a Clostridioides difficile ribotype 027 outbreak with a lean intervention bundle. J Hosp Infect 2020; 106:240-245. [PMID: 32745592 DOI: 10.1016/j.jhin.2020.07.034] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Accepted: 07/27/2020] [Indexed: 01/08/2023]
Abstract
BACKGROUND In a 2015 point-prevalence study, Clostridioides difficile 027, a hypervirulent ribotype, was absent from healthcare institutions in Switzerland. In late 2016, we detected an outbreak of C. difficile infection (CDI) with ribotype 027 occurring across several hospitals in the same hospital network. METHODS The first cases of CDI due to ribotype 027 triggered an outbreak investigation, including whole genome sequencing (WGS) to identify outbreak strains. FINDINGS Twenty-eight patients with CDI caused by ribotype 027 between December 2016 and December 2017 were identified, out of which 20 were caused by a single clone. Commonalities among these patients were hospitalization in the same room or on the same ward, receiving care from the same healthcare workers, and shared toilet areas. In addition to the epidemiological links suggesting possible transmission pathways between cases, WGS confirmed the clonality of this C. difficile 027 outbreak. The outbreak was contained by isolation precautions, raising awareness among healthcare workers, harmonizing diagnostic algorithms, and switching to a sporicidal agent for environmental disinfection. Of note, neither default gowning and gloving nor hand washing with water and soap were implemented. CONCLUSION This C. difficile 027 outbreak was recognized belatedly due to lack of screening for this ribotype in some hospitals, and was contained by a swift response with simple infection prevention measures and adapting the laboratory approach. In order to have a better understanding of C. difficile epidemiology, diagnostic approaches should be standardized, CDI declared notifiable, and longitudinal data on prevalent ribotypes collected in countries where this is not established.
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Affiliation(s)
- A B Kuenzli
- Department of Infectious Diseases, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - S Burri
- Department of Infectious Diseases, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - C Casanova
- Institute for Infectious Diseases, University of Bern, Bern, Switzerland
| | - R Sommerstein
- Department of Infectious Diseases, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - N Buetti
- Department of Infectious Diseases, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland; University of Paris, INSERM IAME, U1137, Team DesCID, Paris, France
| | - H M B Seth-Smith
- Division of Clinical Bacteriology and Mycology, University Hospital Basel, Basel, Switzerland; Applied Microbiology Research, Department of Biomedicine, University of Basel, Basel, Switzerland
| | - T Bodmer
- labormedizinisches zentrum Dr. Risch, Liebefeld, Switzerland
| | - A Egli
- Division of Clinical Bacteriology and Mycology, University Hospital Basel, Basel, Switzerland; Applied Microbiology Research, Department of Biomedicine, University of Basel, Basel, Switzerland
| | - J Marschall
- Department of Infectious Diseases, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.
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Schweiger A, Kuster SP, Maag J, Züllig S, Bertschy S, Bortolin E, John G, Sax H, Limacher A, Atkinson A, Schwappach D, Marschall J. Impact of an evidence-based intervention on urinary catheter utilization, associated process indicators, and infectious and non-infectious outcomes. J Hosp Infect 2020; 106:364-371. [PMID: 32653433 DOI: 10.1016/j.jhin.2020.07.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Accepted: 07/02/2020] [Indexed: 12/01/2022]
Abstract
BACKGROUND Multi-centre intervention studies tackling urinary catheterization and its infectious and non-infectious complications are lacking. AIM To decrease urinary catheterization and, consequently, catheter-associated urinary tract infections (CAUTIs) and non-infectious complications. METHODS Before/after non-randomized multi-centre intervention study in seven hospitals in Switzerland. Intervention bundle consisting of: (1) a concise list of indications for urinary catheterization; (2) daily evaluation of the need for ongoing catheterization; and (3) education on proper insertion and maintenance of urinary catheters. The primary outcome was urinary catheter utilization. Secondary outcomes were CAUTIs, non-infectious complications and process indicators (proportion of indicated catheters and frequency of catheter evaluation). FINDINGS In total, 25,880 patients were included in this study [13,171 at baseline (August-October 2016) and 12,709 post intervention (August-October 2017)]. Catheter utilization decreased from 23.7% to 21.0% (P=0.001), and catheter-days per 100 patient-days decreased from 17.4 to 13.5 (P=0.167). CAUTIs remained stable at a low level with 0.02 infections per 100 patient-days (baseline) and 0.02 infections (post intervention) (P=0.98). Measuring infections per 1000 catheter-days, the rate was 1.02 (baseline) and 1.33 (post intervention) (P=0.60). Non-infectious complications decreased significantly, from 0.79 to 0.56 events per 100 patient-days (P<0.001), and from 39.4 to 35.4 events per 1000 catheter-days (P=0.23). Indicated catheters increased from 74.5% to 90.0% (P<0.001). Re-evaluations increased from 168 to 624 per 1000 catheter-days (P<0.001). CONCLUSION A straightforward bundle of three evidence-based measures reduced catheter utilization and non-infectious complications, whereas the proportion of indicated urinary catheters and daily evaluations increased. The CAUTI rate remained unchanged, albeit at a very low level.
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Affiliation(s)
- A Schweiger
- Swissnoso, National Centre for Infection Control, Bern, Switzerland; Department of Infectious Diseases and Hospital Epidemiology, Basel University Hospital, Basel, Switzerland; Zug Cantonal Hospital, Zug, Switzerland
| | - S P Kuster
- Swissnoso, National Centre for Infection Control, Bern, Switzerland; Division of Infectious Diseases and Hospital Epidemiology, University and University Hospital Zurich, Zurich, Switzerland
| | - J Maag
- Swissnoso, National Centre for Infection Control, Bern, Switzerland
| | - S Züllig
- Swiss Patient Safety Foundation, Zurich, Switzerland
| | - S Bertschy
- Lucerne Cantonal Hospital, Lucerne, Switzerland
| | - E Bortolin
- Ente Ospedaliero Cantonale, Bellinzona, Switzerland
| | - G John
- Department of Internal Medicine, Hôpital Neuchâtelois, Neuchâtel, Switzerland; University of Geneva, Geneva, Switzerland
| | - H Sax
- Swissnoso, National Centre for Infection Control, Bern, Switzerland; Division of Infectious Diseases and Hospital Epidemiology, University and University Hospital Zurich, Zurich, Switzerland
| | - A Limacher
- CTU Bern, University of Bern, Bern, Switzerland
| | - A Atkinson
- Department of Infectious Diseases, Inselspital, Bern University Hospital, Bern, Switzerland
| | - D Schwappach
- Swiss Patient Safety Foundation, Zurich, Switzerland; Institute for Social and Preventive Medicine, University of Bern, Bern, Switzerland
| | - J Marschall
- Swissnoso, National Centre for Infection Control, Bern, Switzerland; Department of Infectious Diseases, Inselspital, Bern University Hospital, Bern, Switzerland.
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Sommerstein R, Atkinson A, Lo Priore EF, Kronenberg A, Marschall J. Characterizing non-linear effects of hospitalisation duration on antimicrobial resistance in respiratory isolates: an analysis of a prospective nationwide surveillance system. Clin Microbiol Infect 2017; 24:45-52. [PMID: 28559001 DOI: 10.1016/j.cmi.2017.05.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2017] [Revised: 05/16/2017] [Accepted: 05/17/2017] [Indexed: 10/19/2022]
Abstract
OBJECTIVES Our objective was to systematically study the influence of length of hospital stay on bacterial resistance in relevant respiratory tract isolates. METHODS Using prospective epidemiological data from the National Swiss Antibiotic Resistance Surveillance System, susceptibility testing results for respiratory isolates retrospectively retrieved from patients hospitalised between 2008 and 2014 were compiled. Generalized additive models were used to illustrate resistance rates relative to hospitalisation duration and to adjust for co-variables. RESULTS In all, 19 622 isolates of six relevant and predominant species were included. Resistance patterns for the predominant species showed a species-specific and antibiotic-resistance-specific profile in function of hospitalisation duration. The oxacillin resistance profile in Staphylococcus aureus isolates was constantly increasing (monophasic). The pattern of resistance to cefepime in Pseudomonas aeruginosa was biphasic with a decreasing resistance rate for the first 5 days of hospitalisation and an increase for days 6-30. A different biphasic pattern occurred in Escherichia coli regarding amoxicillin-clavulanic acid resistance: odds/day increased for the first 7 days of hospitalisation and then remained stable for days 8-30. In the adjusted models epidemiological characteristics such as age, ward type, hospital type and linguistic region were identified as relevant co-variables for the resistance rates. The contribution of these confounders was specific to the individual species/antibiotic resistance models. CONCLUSIONS Resistance rates do not follow a dichotomic pattern (early versus late nosocomial) as suggested by current hospital-acquired pneumonia treatment guidelines. Duration of hospitalisation rather appears to have a more complex and non-linear relationship with bacterial resistance in hospital-acquired pneumonia, also depending on host and environmental factors.
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Affiliation(s)
- R Sommerstein
- Department of Infectious Diseases, Bern University Hospital, University of Bern, Switzerland.
| | - A Atkinson
- Department of Infectious Diseases, Bern University Hospital, University of Bern, Switzerland
| | - E F Lo Priore
- Department of Infectious Diseases, Bern University Hospital, University of Bern, Switzerland
| | - A Kronenberg
- Department of Infectious Diseases, Bern University Hospital, University of Bern, Switzerland; Institute for Infectious Diseases, University of Bern, Switzerland
| | - J Marschall
- Department of Infectious Diseases, Bern University Hospital, University of Bern, Switzerland
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Gautschi N, Marschall J, Candinas D, Banz VM. Effect of music on surgical hand disinfection: a video-based intervention study. J Hosp Infect 2017; 95:352-354. [PMID: 28202191 DOI: 10.1016/j.jhin.2017.01.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2016] [Accepted: 01/10/2017] [Indexed: 10/20/2022]
Abstract
Surgical hand disinfection (SHD) is likely to be influenced by various factors. The aim of this study was to evaluate the effect of listening to music on the duration of SHD. In total, 236 SHD procedures were recorded on video. The duration of SHD exceeded 2min in both the intervention group and the control group, with background music unable to achieve an increase in the time spent scrubbing. However, listening to music reduced the proportion of very short scrub times (<90s) from 17% to 9% (P=0.07). The following four factors increased mean scrub time significantly: female sex; lower staff seniority; scrubbing hands in groups; and use of a stopwatch. Although the improvement observed did not reach significance, it is suggested that background music may be useful for the 10% of healthcare workers who perform very short scrubs.
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Affiliation(s)
- N Gautschi
- Department of Visceral Surgery and Medicine, Inselspital, University Hospital Bern and Bern University, Bern, Switzerland
| | - J Marschall
- Department of Infectious Diseases, Inselspital, University Hospital Bern and Bern University, Bern, Switzerland
| | - D Candinas
- Department of Visceral Surgery and Medicine, Inselspital, University Hospital Bern and Bern University, Bern, Switzerland
| | - V M Banz
- Department of Visceral Surgery and Medicine, Inselspital, University Hospital Bern and Bern University, Bern, Switzerland.
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Trevino SE, Pence MA, Marschall J, Kollef MH, Babcock HM, Burnham CAD. Rapid MRSA PCR on respiratory specimens from ventilated patients with suspected pneumonia: a tool to facilitate antimicrobial stewardship. Eur J Clin Microbiol Infect Dis 2016; 36:879-885. [PMID: 28004323 DOI: 10.1007/s10096-016-2876-5] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2016] [Accepted: 12/12/2016] [Indexed: 11/25/2022]
Abstract
Methicillin-resistant Staphylococcus aureus (MRSA) is an important cause of pneumonia in ventilated patients. Our objective was to evaluate the GeneXpert MRSA/SA SSTI Assay (Xpert MRSA/SA) (Cepheid, Sunnyvale, CA) for use in lower respiratory tract (LRT) specimens for rapid MRSA detection and to determine the potentially saved antibiotic-days if a culture-based identification method was replaced by this assay. Remnant LRT samples from ventilated patients submitted to the microbiology laboratory for routine culture were tested using conventional culture and Xpert MRSA/SA. One hundred of 310 LRT specimens met the inclusion criteria. Ten samples were positive for MRSA by Xpert MRSA/SA, while six were positive by routine culture methods. Xpert MRSA/SA correctly identified 5/6 positive and 89/94 negative MRSA specimens, for a sensitivity of 83.3%, specificity of 94.7%, positive predictive value of 45.6%, and negative predictive value of 98.9%. The assay also correctly detected 3/3 positive and 90/97 negative methicillin-susceptible S. aureus (MSSA) specimens, for a sensitivity of 100%, specificity of 92.8%, positive predictive value of 30%, and negative predictive value of 100%. A total of 748 vancomycin and 305 linezolid antibiotic-days were associated with the enrolled specimens. Vancomycin and linezolid utilization could decrease by 68.4% and 83%, respectively, if discontinued 1 day after negative polymerase chain reaction (PCR) results. The Xpert MRSA/SA SSTI rapid MRSA PCR assay performed well in respiratory samples from ventilated patients with suspected pneumonia and has the potential to facilitate stewardship efforts such as reducing empiric vancomycin and linezolid therapy.
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Affiliation(s)
- S E Trevino
- Department of Medicine, Division of Infectious Diseases, Washington University School of Medicine, St. Louis, MO, USA
- Department of Medicine, Division of Pulmonary and Critical Care, Washington University School of Medicine, St. Louis, MO, USA
| | - M A Pence
- Department of Pathology & Immunology, Division of Laboratory and Genomic Medicine, Washington University School of Medicine, 660 S. Euclid Ave., Campus Box 8118, St. Louis, MO, 63110, USA
| | - J Marschall
- Department of Medicine, Division of Infectious Diseases, Washington University School of Medicine, St. Louis, MO, USA
- Department of Infectious Diseases, Bern University Hospital, University of Bern, Bern, Switzerland
| | - M H Kollef
- Department of Medicine, Division of Pulmonary and Critical Care, Washington University School of Medicine, St. Louis, MO, USA
| | - H M Babcock
- Department of Medicine, Division of Infectious Diseases, Washington University School of Medicine, St. Louis, MO, USA
| | - C-A D Burnham
- Department of Pathology & Immunology, Division of Laboratory and Genomic Medicine, Washington University School of Medicine, 660 S. Euclid Ave., Campus Box 8118, St. Louis, MO, 63110, USA.
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Sommerstein R, Jenni H, Carrel T, Marschall J. Cardiac surgery, nosocomial infection, and the built environment. J Hosp Infect 2016; 93:240-1. [DOI: 10.1016/j.jhin.2016.03.026] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Accepted: 03/29/2016] [Indexed: 02/01/2023]
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Eyer MM, Läng M, Aujesky D, Marschall J. Overtreatment of asymptomatic bacteriuria: a qualitative study. J Hosp Infect 2016; 93:297-303. [PMID: 27174231 DOI: 10.1016/j.jhin.2016.04.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Accepted: 04/08/2016] [Indexed: 11/16/2022]
Abstract
BACKGROUND Overtreatment of asymptomatic bacteriuria (ASB) is widespread and may result in antibiotic side-effects, excess costs to the healthcare system, and may potentially trigger antimicrobial resistance. According to international management guidelines, ASB is not an indication for antibiotic treatment (with few exceptions). AIM To determine reasons for using antibiotics to treat ASB in the absence of a treatment indication. METHODS A qualitative study was conducted at a tertiary care hospital in Switzerland during 2011. We interviewed 21 internal medicine residents and attending physicians selected by purposive sampling, using a semi-structured questionnaire. Responses were analysed in an inductive thematic content approach using dedicated software (MAXQDA(®)). FINDINGS In the 21 interviews, the following thematic rationales for antibiotic overtreatment of ASB were reported (in order of reporting frequency): (i) treating laboratory findings without taking the clinical picture into account (N = 17); (ii) psychological factors such as anxiety, overcautiousness, or anticipated positive impact on patient outcomes (N = 13); (iii) external pressors such as institutional culture, peer pressure, patient expectation, and excessive workload that interferes with proper decision-making (N = 9); (iv) difficulty with interpreting clinical signs and symptoms (N = 8). CONCLUSION In this qualitative study we identified both physician-centred factors (e.g. overcautiousness) and external pressors (e.g. excessive workload) as motivators for prescribing unnecessary antibiotics. Also, we interpreted the frequently cited practice of treating asymptomatic patients based on laboratory findings alone as lack of awareness of evidence-based best practices.
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Affiliation(s)
- M M Eyer
- Department of Infectious Diseases, Bern University Hospital, University of Bern, Switzerland; Division of Infectious Diseases, Valais Hospital, Sion, Switzerland.
| | - M Läng
- Department of Infectious Diseases, Bern University Hospital, University of Bern, Switzerland
| | - D Aujesky
- Division of General Internal Medicine, Bern University Hospital, University of Bern, Switzerland
| | - J Marschall
- Department of Infectious Diseases, Bern University Hospital, University of Bern, Switzerland
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Reineke S, Gahl B, Führer U, Seidl C, Bächli M, Englberger L, Marschall J, Carrel T. Adding Vancomycin to Perioperative Prophylaxis Decreases Deep Sternal Wound Infections in High-risk Cardiac Surgery Patients. Thorac Cardiovasc Surg 2016. [DOI: 10.1055/s-0036-1571550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Kaspar T, Schweiger A, Droz S, Marschall J. Colonization with resistant microorganisms in patients transferred from abroad: who needs to be screened? Antimicrob Resist Infect Control 2015. [PMID: 26213620 PMCID: PMC4514935 DOI: 10.1186/s13756-015-0071-6] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND While multi-drug resistant organisms (MDRO) are a global phenomenon, there are significant regional differences in terms of prevalence. Traveling to countries with a high MDRO prevalence increases the risk of acquiring such an organism. In this study we determined risk factors for MDRO colonization among patients who returned from a healthcare system in a high-prevalence area (so-called transfer patients). Factors predicting colonization could serve as screening criteria to better target those at highest risk. METHODS This screening study included adult patients who had been exposed to a healthcare system abroad or in a high-prevalence region in Switzerland over the past six months and presented to our 950-bed tertiary care hospital between January 1, 2012 and December 31, 2013, a 24-month period. Laboratory screening tests focused on Gram-negative MDROs and methicillin-resistant Staphylococcus aureus (MRSA). RESULTS A total of 235 transfer patients were screened and analyzed, of which 43 (18 %) were positive for an MDRO. Most of them yielded Gram-negative bacteria (42; 98 %), with only a single screening revealing MRSA (2 %); three screenings showed a combination of Gram-negative bacteria and MRSA. For the risk factor analysis we focused on the 42 Gram-negative MDROs. Most of them were ESBL-producing Escherichia coli and Klebsiella pneumoniae while only two were carbapenemase producers. In univariate analysis, factors associated with screening positivity were hospitalization outside of Europe (p < 0.001), surgical procedure in a hospital abroad (p = 0.007), and - on admission to our hospital - active infection (p = 0.002), antibiotic treatment (p = 0.014) and presence of skin lesions (p = 0.001). Only hospitalization outside of Europe (Odds Ratio, OR 3.2 (95 % CI 1.5- 6.8)) and active infection on admission (OR 2.7 (95 % CI 1.07- 6.6)) remained as independent predictors of Gram-negative MDRO colonization. CONCLUSION Our data suggest that a large proportion of patients (i.e., 82 %) transferred to Switzerland from hospitals in high MDRO prevalence areas are unnecessarily screened for MDRO colonization. Basing our screening strategy on certain criteria (such as presence of skin lesions, active infection, antibiotic treatment, history of a surgical procedure abroad and hospitalization outside of Europe) promises to be a better targeted and more cost-effective strategy.
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Affiliation(s)
- T Kaspar
- Department of Infectious Diseases and Prevention, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - A Schweiger
- Department of Internal Medicine, University Hospital Basel, Basel, Switzerland
| | - S Droz
- Institute for Infectious Diseases, University of Bern, Bern, Switzerland
| | - J Marschall
- Department of Infectious Diseases and Prevention, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
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Wettstein Rosenkranz K, Rothenanger E, Brodard I, Collaud A, Overesch G, Bigler B, Marschall J, Perreten V. Nasal carriage of methicillin-resistant Staphylococcus aureus (MRSA) among Swiss veterinary health care providers: detection of livestock- and healthcare-associated clones. SCHWEIZ ARCH TIERH 2015; 156:317-25. [PMID: 24973319 DOI: 10.1024/0036-7281/a000601] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
We screened a total of 340 veterinarians (including general practitioners, small animal practitioners, large animal practitioners, veterinarians working in different veterinary services or industry), and 29 veterinary assistants for nasal carriage of methicillin-resistant Staphylococcus aureus (MRSA) and Staphylococcus pseudintermedius (MRSP) at the 2012 Swiss veterinary annual meeting. MRSA isolates (n = 14) were detected in 3.8 % (95 % CI 2.1 - 6.3 %) of the participants whereas MRSP was not detected. Large animal practitioners were carriers of livestock-associated MRSA (LA-MRSA) ST398-t011-V (n = 2), ST398-t011-IV (n = 4), and ST398-t034-V (n = 1). On the other hand, participants working with small animals harbored human healthcare-associated MRSA (HCA-MRSA) which belonged to epidemic lineages ST225-t003-II (n = 2), ST225-t014-II (n = 1), ST5-t002-II (n = 2), ST5-t283-IV (n = 1), and ST88-t186-IV (n = 1). HCA-MRSA harbored virulence factors such as enterotoxins, β-hemolysin converting phage and leukocidins. None of the MRSA isolates carried Panton-Valentine leukocidin (PVL). In addition to the methicillin resistance gene mecA, LA-MRSA ST398 isolates generally contained additional antibiotic resistance genes conferring resistance to tetracycline [tet(M) and tet(K)], trimethoprim [dfrK, dfrG], and the aminoglycosides gentamicin and kanamycin [aac(6')-Ie - aph(2')-Ia]. On the other hand, HCA-MRSA ST5 and ST225 mainly contained genes conferring resistance to the macrolide, lincosamide and streptogramin B antibiotics [erm(A)], to spectinomycin [ant(9)-Ia], amikacin and tobramycin [ant(4')-Ia], and to fluoroquinolones [amino acid substitutions in GrlA (S84L) and GyrA (S80F and S81P)]. MRSA carriage may represent an occupational risk and veterinarians should be aware of possible MRSA colonization and potential for developing infection or for transmitting these strains. Professional exposure to animals should be reported upon hospitalization and before medical intervention to allow for preventive measures. Infection prevention measures are also indicated in veterinary medicine to avoid MRSA transmission between humans and animals, and to limit the spread of MRSA both in the community, and to animal and human hospitals.
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Affiliation(s)
| | | | - I Brodard
- Institute of Veterinary Bacteriology, Vetsuisse Faculty, University of Bern, Bern
| | - A Collaud
- Institute of Veterinary Bacteriology, Vetsuisse Faculty, University of Bern, Bern
| | - G Overesch
- Institute of Veterinary Bacteriology, Vetsuisse Faculty, University of Bern, Bern
| | | | - J Marschall
- Department of Infectious Diseases, Bern University Hospital and University of Bern, Bern, Switzerland
| | - V Perreten
- Institute of Veterinary Bacteriology, Vetsuisse Faculty, University of Bern, Bern
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Khair HN, VanTassell P, Henderson JP, Warren DK, Marschall J. Vancomycin resistance has no influence on outcomes of enterococcal bacteriuria. J Hosp Infect 2013; 85:183-8. [PMID: 23998947 DOI: 10.1016/j.jhin.2013.07.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2013] [Accepted: 07/29/2013] [Indexed: 11/25/2022]
Abstract
BACKGROUND Infections with vancomycin-resistant enterococci (VRE) are a growing concern in hospitals. The impact of vancomycin resistance in enterococcal urinary tract infection is not well-defined. AIM To describe the epidemiology of enterococcal bacteriuria in a hospital and compare the clinical picture and patient outcomes depending on vancomycin resistance. METHODS This was a 6-month prospective cohort study of hospital patients who were admitted with or who developed enterococcal bacteriuria in a 1250-bed tertiary care hospital. We examined clinical presentation, diagnostic work-up, management, and outcomes. FINDINGS We included 254 patients with enterococcal bacteriuria; 160 (63%) were female and median age was 65 years (range: 17-96). A total of 116 (46%) bacteriurias were hospital-acquired and 145 (57%) catheter-associated. Most patients presented with asymptomatic bacteriuria (ASB) (119; 47%) or pyelonephritis (64; 25%); 51 (20%) had unclassifiable bacteriuria and 20 (8%) had cystitis. Secondary bloodstream infection was detected in 8 (3%) patients. Seventy of 119 (59%) with ASB received antibiotics (mostly vancomycin). There were 74 (29%) VRE bacteriurias. VRE and vancomycin-susceptible enterococci (VSE) produced similar rates of pyelonephritis [19 (25%) vs 45 (25%); P = 0.2], cystitis, and ASB. Outcomes such as ICU transfer [10 (14%) VRE vs 17 (9%) VSE; P = 0.3], hospital length of stay (6.8 vs 5.0 days; P = 0.08), and mortality [10 (14%) vs 13 (7%); P = 0.1] did not vary with vancomycin susceptibility. CONCLUSIONS Vancomycin resistance did not affect the clinical presentation nor did it impact patient outcomes in this cohort of inpatients with enterococcal bacteriuria. Almost half of our cohort had enterococcal ASB; more than 50% of these asymptomatic patients received unnecessary antibiotics. Antimicrobial stewardship efforts should address overtreatment of enterococcal bacteriurias.
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Affiliation(s)
- H N Khair
- Division of Infectious Diseases, Washington University School of Medicine, St Louis, MO, USA
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Cusini A, Nydegger D, Löhri T, Mühlemann K, Marschall J. O004: Improved hand hygiene compliance after eliminating mandatory glove use for patients on contact precautions. Antimicrob Resist Infect Control 2013. [PMCID: PMC3688145 DOI: 10.1186/2047-2994-2-s1-o4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Marschall J, Bhavan KP, Olsen MA, Fraser VJ, Wright NM, Warren DK. Reply to Babouee et al. Clin Infect Dis 2011. [DOI: 10.1093/cid/cir516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Marschall J, Schulz B, Hartmann K. Evaluation of a point-of-care influenza antigen test for the detection of highly pathogenic avian influenza H5N1 virus in cats. Transbound Emerg Dis 2008; 55:315-7. [PMID: 18774992 DOI: 10.1111/j.1865-1682.2008.01041.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Quick diagnosis of H5N1 infection in cats is important because of the zoonotic and pandemic potential of this virus. Human rapid influenza antigen tests are also sold commercially to veterinarians for use in cats. The point-of-care test actim(trade mark) Influenza A&B (Medix Biochemica, Kauniainen, Finland) was evaluated for the diagnosis of H5N1 infection in cats. The test showed a very low sensitivity and did not detect virus in samples of experimentally infected cats, so that its application cannot be recommended for the diagnosis of H5N1 infection in cats.
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Affiliation(s)
- J Marschall
- Clinic of Small Animal Medicine, Ludwig Maximilian University Munich, Munich, Germany
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Marschall J, Evison JM, Droz S, Studer UC, Zimmerli S. Disseminated tuberculosis following total knee arthroplasty in an HIV patient. Infection 2007; 36:274-8. [PMID: 18084716 DOI: 10.1007/s15010-007-7011-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2006] [Accepted: 04/17/2007] [Indexed: 10/22/2022]
Abstract
Skeletal tuberculosis is now uncommon in developed countries. In immunocompromised patients--particularly in the HIV-infected--who present with subacute or chronic joint pain refractory to conventional treatment, osteoarticular tuberculosis should still be included in the differential diagnosis. We report on a lethal case of disseminated tuberculosis in an HIV-infected subject. Dissemination may have resulted from the implantation of an articular prosthesis in a knee joint with unsuspected osteoarticular tuberculosis. The diagnosis was established months later when the patient presented with far-advanced tuberculous meningitis, miliary tuberculosis of the lungs, femoral osteomyelitis and extended cold abscesses along the femoral shaft. Failure to respond to a conventional four-drug regimen is explained by the resistance pattern of his multi-drug resistant strain of Mycobacterium tuberculosis, which was only reported after the patient's death. This case illustrates the diagnostic challenges of osteoarticular tuberculosis and the consequences of a diagnostic delay in an HIV-infected individual.
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Affiliation(s)
- J Marschall
- Division for Infectious Diseases, University Hospital Inselspital, Bern, Switzerland
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Marschall J, Dürig P, Mühlemann K. Low prevalence of methicillin-resistant Staphylococcus aureus (MRSA) carriage in women from former Yugoslavia living in Switzerland. Eur J Clin Microbiol Infect Dis 2006; 25:535-6. [PMID: 16847690 DOI: 10.1007/s10096-006-0178-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- J Marschall
- Division of Infectious Diseases, University Hospital Bern, Friedbühlstrasse 51, 3010 Bern, Switzerland
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Asano TK, McLeod RS, Blitz M, Butts C, Kneteman N, Bigam D, Oosthuizen JFM, Phang PT, Gouthro D, Ravid A, Liu M, O'Connor BI, MacRae HM, Cohen Z, McLeod RS, Al-Obeed O, Penning J, Stern HS, Colquhoun P, Nogueras J, Dipasquale B, Petras J, Wexner S, Woodhouse S, Raval MJ, Heine JA, May GR, Bass S, Brown CJ, MacLean AR, Asano T, Cohen Z, MacRae HM, O'Connor BI, McLeod RS, Asano TK, Toma D, Stern HS, McLeod RS, Irshad K, Ghitulescu GA, Gordon PH, MacLean AR, Lilly L, Cohen Z, O'Connor B, McLeod RS, Ravid A, O'Connor BI, Liu M, MacRae HM, Cohen Z, McLeod RS, St Germaine RL, de Gara CJ, Fox R, Kenwell Z, Blitz S, Wong JT, Mc-Mulkin HM, Porter GA, Jayaraman S, Gray D, Burpee SE, Schlachta CM, Mamazza J, Pace K, Poulin EC, Freeman J, Tranqui P, Trottier D, Bodurtha A, Sarma A, Bheerappa N, Sastry RA, de Gara CJ, Hanson J, Hamilton S, Taylor MC, Haase E, Stevens J, Rigo V, Richards J, Bigam DL, Cheung PY, Burpee SE, Schlachta CM, Mamazza J, Pace K, Poulin EC, Grace DM, Gupta S, Sarma A, Bheerappa N, Radhakrishna P, Sastry RA, Malik S, Duffy P, Schulte P, Cameron R, Pace KT, Dyer S, Phan V, Poulin E, Schlachta C, Mamazza J, Stewart R, Honey RJ, Kanthan R, Kanthan SC, Jayaraman S, Aarts MA, Solomon MJ, McLeod RS, Ong S, Pitt D, Stephen W, Latulippe J, Girotti M, Bloom S, Pace K, Dyer S, Stewart R, Honey RJ, Poulin E, Schlachta C, Mamazza J, Furlan JC, Rosen IB, Asano TK, Haigh PI, McLeod RS, Al Saleh N, Taylor B, Karimuddin AA, Marschall J, McFadden A, Pollett WG, Dicks E, Tranqui P, Trottier D, Freeman J, Bodurtha A, Urbach DR, Bell CM, Austin PC, Cleary SP, Gyfe R, Greig P, Smith L, Mackenzie R, Strasberg S, Hanna S, Taylor B, Langer B, Gallinger S, Marschall J, Nechala P, Chibbar R, Colquhoun P, Zhou J, Lee TDG, Meneghetti AT, McKenna GJ, Owen D, Scudamore CH, McMaster RM, Chung SW, Aarts MA, Granton J, Cook DJ, Bohnen JMA, Marshall JC, Colquhoun P, Weiss E, Efron J, Nogueras J, Vernava A, Wexner S, Poulin EC, Schlachta CM, Burpee SE, Pace KT, Mamazza J, Rosen IB, Furlan JC, Charghi R, Schricker T, Backman S, Rouah F, Christou NV, Obayan A, Keith R, Juurlink BHJ, Skaro AI, Liwski RS, Zhou J, Lee TDG, Hirsch GM, Powers KA, Khadaroo RG, Papia G, Kapus A, Rotstein OD, Furlan JC, Rosen IB, Stratford AFC, George RL, VanManen L, Klassen DR, Feldman LS, Mayrand S, Mercier L, Stanbridge D, Fried GM, Nanji SA, Hancock WW, Anderson C, Shapiro AMJ, Butter A, Martins L, Taylor B, Ott MC, Rycroft K, Wall WJ, Burpee SE, Schlachta CM, Mamazza J, Pace K, Poulin EC, Taylor MC, Christou NV, Jarand J, Sylvestre JL, McLean APH, Behzadi A, Tan L, Unruh H, Brandt MG, Darling GE, Miller L, Seely AJE, Maziak DE, Gunning D, Do MT, Bukhari M, Shamji FM, Abdurahman A, Darling G, Ginsberg R, Johnston M, Waddell T, Keshavjee S, Cuccarolo G, Charyk-Stewart T, Inaba K, Malthaner R, Gray D, Girotti M, Grondin SC, Tutton SM, Sichlau MJ, Pozdol C, McDonough TJ, Masters GA, Ray DW, Liptay MJ. Abstracts of presentations to the Annual Meetings of the Canadian Society of Colon and Rectal Surgeons Canadian Association of General Surgeons Canadian Association of Thoracic Surgeons: Canadian Surgery Forum, London, Ont., Sept. 19 to 22, 2002. Can J Surg 2002; 45:3-26. [PMID: 37381180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/30/2023] Open
Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - D Pitt
- Ottawa Hospital, University of Ottawa, Ottawa, Ont
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Meredith J, Ring M, Macins A, Marschall J, Cheng NN, Theilmann D, Brock HW, Phillips JE. Locust ion transport peptide (ITP): primary structure, cDNA and expression in a baculovirus system. J Exp Biol 1996; 199:1053-61. [PMID: 8786332 DOI: 10.1242/jeb.199.5.1053] [Citation(s) in RCA: 76] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Ion transport peptide (ITP) purified from locust nervous corpus cardiacum (CC) has previously been shown to stimulate salt and water reabsorption and inhibit acid secretion in the ileum of Schistocerca gregaria. We used the partial amino acid sequence of purified ITP to derive degenerate primers. These were used to amplify a cDNA from brain RNA using reverse transcription and the polymerase chain reaction (RtPCR). This sequence was extended using anchored PCR to yield a partial, 517bp cDNA clone. This cDNA encodes a putative ITP prohormone which could be cleaved at two dibasic amino acid sites to yield a 72 residue active amidated peptide. The deduced amino acid sequence from the cDNA agrees completely with the amino acid sequence and molecular mass (8564Da) derived from analysis of purified ITP. Relative to a family of crustacean hyperglycaemic hormones (CHH), all six cysteine residues and many other amino acid residues are conserved in ITP, establishing that ITP is a homologue. However, CHH, crab eyestalk and CC extracts from distantly related insects have no action, whereas CC extracts from closely related insects are active on the locust ITP assay, showing that the bioassay is selective. Insect Sf9 cells transfected with a baculovirus containing our partial cDNA secreted a potent stimulant of locust ileal transport, confirming that the peptide encoded by our ITP clone has biological activity. The mRNA for ITP is restricted to the brain and CC. Interestingly, a related mRNA is observed in other tissues which are not active on the ITP bioassay.
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Affiliation(s)
- J Meredith
- Department of Zoology, University of British Columbia, Vancouver, Canada
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Choi B, Marschall J, Deng Y, McCullough C, Paden B, Mehrabian R. Densification of rapidly solidified titanium aluminide powders—II. The use of a sensor to verify hiring models. ACTA ACUST UNITED AC 1990. [DOI: 10.1016/0956-7151(90)90091-t] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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