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Bruyneel A, Miesse I, Mathieu D, Djuidjé Yuemo C, Simon A. Prevalence and factors associated with methicillin-resistant Staphylococcus aureus colonization on admission to geriatric care units: impact on screening practices. J Hosp Infect 2024; 146:109-115. [PMID: 38309666 DOI: 10.1016/j.jhin.2024.01.014] [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: 10/27/2023] [Revised: 01/04/2024] [Accepted: 01/14/2024] [Indexed: 02/05/2024]
Abstract
OBJECTIVES Universal screening for methicillin-resistant Staphylococcus aureus (MRSA) entails additional costs, and there is no consensus for targeted screening for high-risk units. The aims of this study were to determine the prevalence of MRSA in geriatric care units, and to identify the factors associated with MRSA colonization on admission. METHODS This retrospective case-control study (1:1) in the geriatric care unit of six Belgian hospitals covered the period from 1st January 2021 to 31st December 2022. Cases were patients with a positive MRSA screening result within 48 h of admission to the geriatric care unit, and controls were patients with a negative screening result. RESULTS In total, 556 patients were included in this study (278 in each group). Prevalence per 100 admissions for the total sample was 2.3 [95% confidence interval (CI) 2.2-2.6]. Significant multi-variate factors associated with MRSA carriage on admission were: history of MRSA, nursing home origin, and chronic skin lesions. Applying these three factors would give an area under the receiver operating characteristic (ROC) curve of 0.73 (95% CI 0.71-0.77), and would allow screening to be carried out in only 55.4% of cases (95% CI 51.2-59.6%). CONCLUSIONS Using these factors as screening criteria in geriatric care units could significantly reduce the number of patients screened for MRSA, while maintaining satisfactory sensitivity and specificity.
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Affiliation(s)
- A Bruyneel
- Hospital Outbreak Support Team, Réseau Hospitalier Universitaire Cœur de Wallonie, Belgium; Health Economics, Hospital Management and Nursing Research Department, School of Public Health, Université Libre de Bruxelles, Belgium.
| | - I Miesse
- Hospital Outbreak Support Team, Réseau Hospitalier Universitaire Cœur de Wallonie, Belgium
| | - D Mathieu
- Hospital Outbreak Support Team, Réseau Hospitalier Universitaire Cœur de Wallonie, Belgium; Infectiology - Infection Prevention and Control Department, CHU Tivoli, La Louviere, Belgium
| | | | - A Simon
- Infection Control Team, CHU HELORA, Belgium
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Cui J, Heavey J, Lin L, Klein EY, Madden GR, Sifri CD, Lewis B, Vullikanti AK, Prakash BA. Modeling relaxed policies for discontinuation of methicillin-resistant Staphylococcus aureus contact precautions. Infect Control Hosp Epidemiol 2024:1-6. [PMID: 38404133 DOI: 10.1017/ice.2024.23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/27/2024]
Abstract
OBJECTIVE To evaluate the economic costs of reducing the University of Virginia Hospital's present "3-negative" policy, which continues methicillin-resistant Staphylococcus aureus (MRSA) contact precautions until patients receive 3 consecutive negative test results, to either 2 or 1 negative. DESIGN Cost-effective analysis. SETTINGS The University of Virginia Hospital. PATIENTS The study included data from 41,216 patients from 2015 to 2019. METHODS We developed a model for MRSA transmission in the University of Virginia Hospital, accounting for both environmental contamination and interactions between patients and providers, which were derived from electronic health record (EHR) data. The model was fit to MRSA incidence over the study period under the current 3-negative clearance policy. A counterfactual simulation was used to estimate outcomes and costs for 2- and 1-negative policies compared with the current 3-negative policy. RESULTS Our findings suggest that 2-negative and 1-negative policies would have led to 6 (95% CI, -30 to 44; P < .001) and 17 (95% CI, -23 to 59; -10.1% to 25.8%; P < .001) more MRSA cases, respectively, at the hospital over the study period. Overall, the 1-negative policy has statistically significantly lower costs ($628,452; 95% CI, $513,592-$752,148) annually (P < .001) in US dollars, inflation-adjusted for 2023) than the 2-negative policy ($687,946; 95% CI, $562,522-$812,662) and 3-negative ($702,823; 95% CI, $577,277-$846,605). CONCLUSIONS A single negative MRSA nares PCR test may provide sufficient evidence to discontinue MRSA contact precautions, and it may be the most cost-effective option.
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Affiliation(s)
- Jiaming Cui
- College of Computing, Georgia Institute of Technology, Atlanta, Georgia
| | - Jack Heavey
- Department of Computer Science, University of Virginia, Charlottesville, Virginia
| | - Leo Lin
- Department of Computer Science, University of Virginia, Charlottesville, Virginia
| | - Eili Y Klein
- Center for Disease Dynamics, Economics & Policy, Washington, DC
- Department of Emergency Medicine, Johns Hopkins School of Medicine, Baltimore, Maryland
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
| | - Gregory R Madden
- Division of Infectious Diseases & International Health, Department of Medicine, University of Virginia School of Medicine, Charlottesville, Virginia
| | - Costi D Sifri
- Division of Infectious Diseases & International Health, Department of Medicine, University of Virginia School of Medicine, Charlottesville, Virginia
- Office of Hospital Epidemiology/Infection Prevention & Control, UVA Health, Charlottesville, Virginia
| | - Bryan Lewis
- Biocomplexity Institute, University of Virginia, Charlottesville, Virginia
| | - Anil K Vullikanti
- Department of Computer Science, University of Virginia, Charlottesville, Virginia
- Biocomplexity Institute, University of Virginia, Charlottesville, Virginia
| | - B Aditya Prakash
- College of Computing, Georgia Institute of Technology, Atlanta, Georgia
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van der Schoor AS, Severin JA, Klaassen CHW, van den Akker JPC, Bruno MJ, Hendriks JM, Vos MC, Voor in ‘t holt AF. Universal screening or a universal risk assessment combined with risk-based screening for multidrug-resistant microorganisms upon admission: Comparing strategies. PLoS One 2023; 18:e0289163. [PMID: 37490485 PMCID: PMC10368271 DOI: 10.1371/journal.pone.0289163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 07/12/2023] [Indexed: 07/27/2023] Open
Abstract
OBJECTIVE Timely identification of patients who carry multidrug-resistant microorganisms (MDRO) is needed to prevent nosocomial spread to other patients and to the hospital environment. We aimed to compare the yield of a universal screening strategy upon admission to the currently installed universal risk assessment combined with risk-based screening upon admission. METHODS This observational study was conducted within a prospective cohort study. From January 1, 2018, until September 1, 2019, patients admitted to our hospital were asked to participate. Nasal and perianal samples were taken upon admission and checked for the presence of MDRO. The results of the universal risk assessment and risk-based screening were collected retrospectively from electronic health records. RESULTS In total, 1017 patients with 1069 separate hospital admissions participated in the study. Universal screening identified 38 (3.6%) unknown MDRO carriers upon admission (37 individual patients), all carrying extended-spectrum beta-lactamase-producing Enterobacterales. For 946 of 1069 (88.5%) patients, both the universal risk assessment and universal screening were performed. For 19 (2.0%) admissions, ≥1 risk factor was identified. The universal risk assessment identified one (0.1%) unknown carrier, compared to 37 out of 946 carriers for the universal screening (P<0.001). Of the 37 carriers identified through the universal screening, 35 (94.6%) reported no risk factors. CONCLUSIONS Our results show that in our low endemic setting, a universal screening strategy identified significantly more MDRO carriers than the currently implemented universal risk-assessment. When implementing a universal risk-assessment, risk factors should be carefully selected to be able to identify ESBL-E carriers. While the universal screening identified more MDRO carriers, further research is needed to determine the cost-effectiveness of this strategy.
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Affiliation(s)
- Adriënne S. van der Schoor
- Department of Medical Microbiology and Infectious Diseases, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Juliëtte A. Severin
- Department of Medical Microbiology and Infectious Diseases, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Corné H. W. Klaassen
- Department of Medical Microbiology and Infectious Diseases, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | | | - Marco J. Bruno
- Department of Gastroenterology and Hepatology, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Johanna M. Hendriks
- Department of Surgery, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Margreet C. Vos
- Department of Medical Microbiology and Infectious Diseases, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Anne F. Voor in ‘t holt
- Department of Medical Microbiology and Infectious Diseases, Erasmus MC University Medical Center, Rotterdam, The Netherlands
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Comparing Rates of Postoperative Meningitis After Endoscopic Endonasal Procedures Based on Methicillin-Resistant Staphylococcus aureus/Methicillin-Sensitive Staphylococcus aureus Colonization and Antibiotic Prophylaxis. World Neurosurg 2022; 167:e858-e864. [PMID: 36041718 DOI: 10.1016/j.wneu.2022.08.091] [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: 05/30/2022] [Revised: 08/19/2022] [Accepted: 08/20/2022] [Indexed: 11/23/2022]
Abstract
BACKGROUND Endoscopic endonasal approach (EEA) procedures are inherently contaminated due to direct access through the nasopharyngeal mucosa. The reported rate of postoperative meningitis in EEA procedures is 0.7%-3%. A variety of methods exist to minimize the risk of meningitis with antibiotic prophylaxis, although their value is not completely understood. This study investigated whether there is a difference in rates of postoperative meningitis based on Staphylococcus aureus colonization and use of preoperative antibiotic prophylaxis. METHODS All adult patients who underwent EEA resection at our institution from 2013 to 2021 were retrospectively reviewed. Patients with preoperative cerebrospinal fluid infections were excluded. Data including recent preoperative infections, preoperative colonization status, antibiotic administration, and postoperative outcomes were recorded for each patient. RESULTS Of 483 patients identified (mean age, 51 years; range, 18-90 years; 274 [56.7%] female), 80 (16.6%) had a positive preoperative methicillin-resistant Staphylococcus aureus (MRSA)/methicillin-sensitive Staphylococcus aureus (MSSA) screening swab. Twenty-one (26.3%) colonized patients were treated with preoperative decolonizing antibiotics. Within 30 days of surgery, 13 (2.7%) patients developed culture-positive meningitis. There was no significant difference in meningitis rates based on MRSA/MSSA colonization status. Among colonized patients, there was no significant difference in rates of MRSA/MSSA meningitis based on preoperative antibiotic decolonization. CONCLUSIONS Postoperative rates of meningitis after EEA surgery were not significantly changed based on MRSA/MSSA colonization status of the patient or preoperative decolonization. The utility of preoperative testing of MRSA/MSSA status and antibiotics for decolonization to prevent postoperative meningitis should be further investigated.
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Çaǧlayan Ç, Barnes SL, Pineles LL, Harris AD, Klein EY. A Data-Driven Framework for Identifying Intensive Care Unit Admissions Colonized With Multidrug-Resistant Organisms. Front Public Health 2022; 10:853757. [PMID: 35372195 PMCID: PMC8968755 DOI: 10.3389/fpubh.2022.853757] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Accepted: 02/14/2022] [Indexed: 12/29/2022] Open
Abstract
Background The rising prevalence of multi-drug resistant organisms (MDROs), such as Methicillin-resistant Staphylococcus aureus (MRSA), Vancomycin-resistant Enterococci (VRE), and Carbapenem-resistant Enterobacteriaceae (CRE), is an increasing concern in healthcare settings. Materials and Methods Leveraging data from electronic healthcare records and a unique MDRO universal screening program, we developed a data-driven modeling framework to predict MRSA, VRE, and CRE colonization upon intensive care unit (ICU) admission, and identified the associated socio-demographic and clinical factors using logistic regression (LR), random forest (RF), and XGBoost algorithms. We performed threshold optimization for converting predicted probabilities into binary predictions and identified the cut-off maximizing the sum of sensitivity and specificity. Results Four thousand six hundred seventy ICU admissions (3,958 patients) were examined. MDRO colonization rate was 17.59% (13.03% VRE, 1.45% CRE, and 7.47% MRSA). Our study achieved the following sensitivity and specificity values with the best performing models, respectively: 80% and 66% for VRE with LR, 73% and 77% for CRE with XGBoost, 76% and 59% for MRSA with RF, and 82% and 83% for MDRO (i.e., VRE or CRE or MRSA) with RF. Further, we identified several predictors of MDRO colonization, including long-term care facility stay, current diagnosis of skin/subcutaneous tissue or infectious/parasitic disease, and recent isolation precaution procedures before ICU admission. Conclusion Our data-driven modeling framework can be used as a clinical decision support tool for timely predictions, characterization and identification of high-risk patients, and selective and timely use of infection control measures in ICUs.
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Affiliation(s)
- Çaǧlar Çaǧlayan
- Asymmetric Operations Sector, Johns Hopkins University Applied Physics Laboratory, Laurel, MD, United States
| | - Sean L. Barnes
- Department of Decision, Operations and Information Technologies (DO&IT), R.H. Smith School of Business, University of Maryland, College Park, MD, United States
| | - Lisa L. Pineles
- Department of Epidemiology and Public Health, University of Maryland School of Medicine, Baltimore, MD, United States
| | - Anthony D. Harris
- Department of Epidemiology and Public Health, University of Maryland School of Medicine, Baltimore, MD, United States
| | - Eili Y. Klein
- Department of Emergency Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, United States
- Center for Disease Dynamics, Economics and Policy, Washington, DC, United States
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Barreto JV, Dias CC, Cardoso T. Risk factors for community-onset pneumonia caused by drug-resistant pathogens: A prospective cohort study. Eur J Intern Med 2022; 96:66-73. [PMID: 34670681 DOI: 10.1016/j.ejim.2021.10.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 09/30/2021] [Accepted: 10/07/2021] [Indexed: 11/16/2022]
Abstract
INTRODUCTION There is no consensual definition of risk factors for drug resistant pathogens (DRP) in community-onset pneumonia (COP). Healthcare-associated pneumonia criteria have been abandoned because they were found to have weak discriminative power. Our aim was to identify risk factors for DRP in COP. METHODS Prospective cohort study, conducted over a two years' period, in a community-based hospital, including all adult patients with COP criteria. Univariate and multivariate logistic regression modeling were performed to understand the association of risk factors (demographic, clinical and epidemiological) with COP by a DRP (PES: Pseudomonas aeruginosa, extended-spectrum ß-lactamase producing Enterobacteriaceae, Methicillin-resistant Staphylococcus aureus; and other non-fermenting gram-negative bacteria, namely Acinetobacter baumannii). RESULTS A total of 660 cases of COP were included, with a mean (±SD) age of 74±15 years and 58.9% of males. Microbiological documentation was possible in 32.6% of the cases. There were 197 cases selected for further analysis, of which 37 were cases of PES. The multivariate logistic regression model retained antibiotic use in the previous 90 days (adjusted OR=4.411, 95%CI [1.745-11.148]) and being bed-ridden (adjusted OR=5.492, 95%CI [2.121-14.222]), adjusted for Charlson's Index, CURB 65 and provenience from a long-term care facility. The area under the ROC curve for this model was 0.832, 95%CI [0.756-0.908], higher than the application of the HCAP criteria (AUROC = 0.676, 95%CI [0.582-0.770]). CONCLUSION In this study, antibiotic use in the previous 90 days and being bed-ridden were independently associated with COP caused by DRP, after adjustment for Charlson's Index, CURB 65 and provenience from a long-term care facility.
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Affiliation(s)
- J Vasco Barreto
- Internal Medicine Service, Medicine Department, Hospital Pedro Hispano, Matosinhos Local Health Unit, Rua Dr. Eduardo Torres, 4464-513 Senhora da Hora, Portugal; ICBAS - School of Medicine and Biomedical Sciences, University of Porto, Rua Jorge de Viterbo Ferreira 228, 4050-313 Porto, Portugal.
| | - Cláudia Camila Dias
- Knowledge Management Unit and Department of Community Medicine, Information and Health Decision Sciences, Faculty of Medicine, University of Porto, Alameda Prof. Hernâni Monteiro, 4200-319 Porto, Portugal; CINTESIS - Center for Health Technology and Services Research, Alameda Prof. Hernâni Monteiro, 4200-319 Porto, Portugal.
| | - Teresa Cardoso
- ICBAS - School of Medicine and Biomedical Sciences, University of Porto, Rua Jorge de Viterbo Ferreira 228, 4050-313 Porto, Portugal; Intensive Care Unit (UCIP) and Hospital Infection Control Committee, Hospital de Santo António, Oporto University Hospital Center, University of Porto, Largo Prof. Abel Salazar, 4099-001 Porto, Portugal
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Neil JR, Verma A, Kronewitter SR, McGee WM, Mullen C, Viirtola M, Kotovuori A, Friedrich H, Finell J, Rannisto J, Syka JEP, Stephenson JL. Rapid MRSA detection via tandem mass spectrometry of the intact 80 kDa PBP2a resistance protein. Sci Rep 2021; 11:18309. [PMID: 34526615 PMCID: PMC8443585 DOI: 10.1038/s41598-021-97844-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Accepted: 08/30/2021] [Indexed: 02/08/2023] Open
Abstract
Treatment of antibiotic-resistant infections is dependent on the detection of specific bacterial genes or proteins in clinical assays. Identification of methicillin-resistant Staphylococcus aureus (MRSA) is often accomplished through the detection of penicillin-binding protein 2a (PBP2a). With greater dependence on mass spectrometry (MS)-based bacterial identification, complementary efforts to detect resistance have been hindered by the complexity of those proteins responsible. Initial characterization of PBP2a indicates the presence of glycan modifications. To simplify detection, we demonstrate a proof-of-concept tandem MS approach involving the generation of N-terminal PBP2a peptide-like fragments and detection of unique product ions during top-down proteomic sample analyses. This approach was implemented for two PBP2a variants, PBP2amecA and PBP2amecC, and was accurate across a representative panel of MRSA strains with different genetic backgrounds. Additionally, PBP2amecA was successfully detected from clinical isolates using a five-minute liquid chromatographic separation and implementation of this MS detection strategy. Our results highlight the capability of direct MS-based resistance marker detection and potential advantages for implementing these approaches in clinical diagnostics.
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McCarthy A, Saldana L, Ackerman DN, Su Y, John JV, Chen S, Weihs S, Reid SP, Santarpia JL, Carlson MA, Xie J. Ultra-absorptive Nanofiber Swabs for Improved Collection and Test Sensitivity of SARS-CoV-2 and other Biological Specimens. NANO LETTERS 2021; 21:1508-1516. [PMID: 33501831 DOI: 10.1021/acs.nanolett.0c04956] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Following the COVID-19 outbreak, swabs for biological specimen collection were thrust to the forefront of healthcare materials. Swab sample collection and recovery are vital for reducing false negative diagnostic tests, early detection of pathogens, and harvesting DNA from limited biological samples. In this study, we report a new class of nanofiber swabs tipped with hierarchical 3D nanofiber objects produced by expanding electrospun membranes with a solids-of-revolution-inspired gas foaming technique. Nanofiber swabs significantly improve absorption and release of proteins, cells, bacteria, DNA, and viruses from solutions and surfaces. Implementation of nanofiber swabs in SARS-CoV-2 detection reduces the false negative rates at two viral concentrations and identifies SARS-CoV-2 at a 10× lower viral concentration compared to flocked and cotton swabs. The nanofiber swabs show great promise in improving test sensitivity, potentially leading to timely and accurate diagnosis of many diseases.
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Affiliation(s)
- Alec McCarthy
- Department of Surgery-Transplant and Mary & Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, Nebraska 68130, United States
| | - Lorenzo Saldana
- Department of Surgery-Transplant and Mary & Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, Nebraska 68130, United States
| | - Daniel N Ackerman
- National Strategic Research Institute, Omaha, Nebraska 68106, United States
| | - Yajuan Su
- Department of Surgery-Transplant and Mary & Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, Nebraska 68130, United States
| | - Johnson V John
- Department of Surgery-Transplant and Mary & Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, Nebraska 68130, United States
| | - Shixuan Chen
- Department of Surgery-Transplant and Mary & Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, Nebraska 68130, United States
| | - Shelbie Weihs
- Department of Surgery-Transplant and Mary & Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, Nebraska 68130, United States
| | - St Patrick Reid
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, Nebraska 68130, United States
| | - Joshua L Santarpia
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, Nebraska 68130, United States
| | - Mark A Carlson
- Department of Surgery-General Surgery, University of Nebraska Medical Center, Omaha, Nebraska 68130, United States
| | - Jingwei Xie
- Department of Surgery-Transplant and Mary & Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, Nebraska 68130, United States
- Department of Mechanical and Materials Engineering, College of Engineering, University of Nebraska-Lincoln, Lincoln, Nebraska 68588, United States
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Schweitzer D, Klaber I, García P, López F, Lira MJ, Botello E. Methicillin-resistant Staphylococcus aureus colonization in patients undergoing primary total hip arthroplasty. J Med Microbiol 2020; 69:600-604. [PMID: 32427561 DOI: 10.1099/jmm.0.001155] [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: 11/18/2022] Open
Abstract
Introduction. Nasal and skin colonization by methicillin-resistant Staphylococcus aureus (MRSA) are linked to a higher incidence of infection after total joint replacement. The prevalence of colonization is poorly defined in Latin American countries.Aim. The aim of the present study was to determine the prevalence of MRSA colonization in the nostrils and groin using real-time polymerase chain reaction (RT-PCR) in patients undergoing total hip arthroplasty (THA).Methodology. In this cross-sectional study, 146 patients undergoing THA between December 2015 and March 2017 in a tertiary-care university-affiliated hospital in Chile were screened for MRSA colonization before the procedure using RT-PCR independently in the nostrils and groin. Risk factors for colonization were documented.Results. Seven of the 146 (5 %) patients undergoing THA were carriers of MRSA in the nostrils and/or the groin. Recent antibiotic use was identified as a risk factor for colonization, OR=4.86 [95 % confidence interval (CI): 1.56-13.96]. Patients reporting at least one of the seven surveyed risk factors had an OR of 2.39 (95 % CI: 0.37-25.77) for colonization. MRSA colonization frequency was twofold higher in the groin as opposed to the nostrils (P=0.014).Conclusion. Five percent of the patients undergoing THA were identified as carriers of MRSA. Recent antibiotic use is a relevant risk factor for MRSA colonization in patients undergoing primary total hip arthroplasty.
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Affiliation(s)
- Daniel Schweitzer
- Pontificia Universidad Católica de Chile, School of Medicine, Department of Orthopedic Surgery, Santiago, Chile
| | - Ianiv Klaber
- Pontificia Universidad Católica de Chile, School of Medicine, Department of Orthopedic Surgery, Santiago, Chile
| | - Patricia García
- Pontificia Universidad Católica de Chile, Department of Orthopedic Surgery, Santiago, Chile
| | - Felipe López
- Pontificia Universidad Católica de Chile, School of Medicine, Department of Orthopedic Surgery, Santiago, Chile
| | - María Jesús Lira
- Pontificia Universidad Católica de Chile, Department of Clinical Laboratories, Santiago, Chile
| | - Eduardo Botello
- Pontificia Universidad Católica de Chile, School of Medicine, Department of Orthopedic Surgery, Santiago, Chile
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Mizusawa M, Carroll KC. Novel strategies for rapid identification and susceptibility testing of MRSA. Expert Rev Anti Infect Ther 2020; 18:759-778. [PMID: 32329637 DOI: 10.1080/14787210.2020.1760842] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
INTRODUCTION Methicillin-resistant Staphylococcus aureus (MRSA) is associated with adverse clinical outcomes and increased morbidity, mortality, length of hospital stay, and health-care costs. Rapid diagnosis of MRSA infections has been associated with positive impact on clinical outcomes. AREAS COVERED We searched relevant papers in PubMed for the last 10 years. In major papers, we scanned the bibliographies to ensure that important articles were included. This review describes screening and diagnostic test methods for MRSA and their analytical performances with a focus on rapid molecular-based assays including those that are on the horizon. Future novel technologies will allow more rapid detection of phenotypic resistance. In the case of whole-genome sequencing, detection of mutations may predict resistance, transmission, and virulence. EXPERT OPINION Currently there are many diagnostic options for the detection of MRSA in surveillance and clinical samples. In general, these are highly accurate and have resulted in improvements in targeted management and reduction in hospital or intensive care unit length of stay for both MSSA and MRSA. Impact on mortality has been variable. Promising novel technologies will not only accurately identify pathogens and detect their resistance markers but will allow discovery of virulence determinants that might further affect patient management.
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Affiliation(s)
- Masako Mizusawa
- Section of Infectious Diseases, Department of Internal Medicine, University of Missouri , Kansas, MO, USA
| | - Karen C Carroll
- Department of Pathology, Division of Medical Microbiology, The Johns Hopkins University School of Medicine , Baltimore, MD, USA
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Dymond A, Davies H, Mealing S, Pollit V, Coll F, Brown NM, Peacock SJ. Genomic Surveillance of Methicillin-resistant Staphylococcus aureus: A Mathematical Early Modeling Study of Cost-effectiveness. Clin Infect Dis 2020; 70:1613-1619. [PMID: 31219153 PMCID: PMC7145999 DOI: 10.1093/cid/ciz480] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Accepted: 06/17/2019] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND Genomic surveillance of methicillin-resistant Staphylococcus aureus (MRSA) identifies unsuspected transmission events and outbreaks. Used proactively, this could direct early and highly targeted infection control interventions to prevent ongoing spread. Here, we evaluated the cost-effectiveness of this intervention in a model that compared whole-genome sequencing plus current practice versus current practice alone. METHODS A UK cost-effectiveness study was conducted using an early model built from the perspective of the National Health Service and personal social services. The effectiveness of sequencing was based on the relative reduction in total MRSA acquisitions in a cohort of hospitalized patients in the year following their index admissions. A sensitivity analysis was used to illustrate and assess the level of confidence associated with the conclusions of our economic evaluation. RESULTS A cohort of 65 000 patients were run through the model. Assuming that sequencing would result in a 90% reduction in MRSA acquisition, 290 new MRSA cases were avoided. This gave an absolute reduction of 28.8% and avoidance of 2 MRSA-related deaths. Base case results indicated that the use of routine, proactive MRSA sequencing would be associated with estimated cost savings of over £728 290 per annual hospitalized cohort. The impact in total quality-adjusted life years (QALYs) was relatively modest, with sequencing leading to an additional 14.28 QALYs gained. Results were most sensitive to changes in the probability of a MRSA-negative patient acquiring MRSA during their hospital admission. CONCLUSIONS We showed that proactive genomic surveillance of MRSA is likely to be cost-effective. Further evaluation is required in the context of a prospective study.
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Affiliation(s)
- Amy Dymond
- York Health Economics Consortium, United Kingdom
| | | | | | - Vicki Pollit
- York Health Economics Consortium, United Kingdom
| | - Francesc Coll
- London School of Hygiene & Tropical Medicine, United Kingdom
| | - Nicholas M Brown
- Cambridge University Hospitals National Health Service Foundation Trust, United Kingdom
| | - Sharon J Peacock
- London School of Hygiene & Tropical Medicine, United Kingdom
- Department of Medicine, University of Cambridge, United Kingdom
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Haugnes H, Elstrøm P, Kacelnik O, Jadczak U, Wisløff T, de Blasio B. Financial and temporal costs of patient isolation in Norwegian hospitals. J Hosp Infect 2020; 104:269-275. [DOI: 10.1016/j.jhin.2019.11.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 10/18/2019] [Accepted: 11/15/2019] [Indexed: 11/29/2022]
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Segagni Lusignani L, Presterl E, Zatorska B, Van den Nest M, Diab-Elschahawi M. Infection control and risk factors for acquisition of carbapenemase-producing enterobacteriaceae. A 5 year (2011-2016) case-control study. Antimicrob Resist Infect Control 2020; 9:18. [PMID: 31988746 PMCID: PMC6969403 DOI: 10.1186/s13756-019-0668-2] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Accepted: 12/20/2019] [Indexed: 01/01/2023] Open
Abstract
Background Carbapenemase-producing enterobacteriaceae (CPE) are a major threat for severely ill patients. However, only limited data on the epidemiology and on evidence-based infection prevention and control measures are available. The aim of this study was to investigate the epidemiology of patients with CPE, characterizing the CPE isolates by their resistance mechanisms and genetic similarity, to explore risk factors for their acquisition, and to evaluate the effectiveness of the current CPE infection control measures. Methods A retrospective case-control study was performed using data from 2011 to 2016 in a 1800-bed academic hospital in Central Europe, where risk-based screening at patients´ admission is performed. Carbapenem resistance mechanisms of all carbapenem resistant enterobacteriaceae from patients admitted during this period were investigated. Clinical data of the CPE-positive patients were analysed and compared to a matched control group (case-control ratio of 1:3). We performed univariate and multivariate statistical analysis to identify risk factors for CPE acquisition. Results Of 621,623 admitted patients in the study period, 75 patients with carriage of carbapenem resistant enterobacteriaceae were included (0.12/1000 admittances). Carbapenemase-encoding genes were detected in 77.3% (58/75) of patients with carbapenem-resistant enterobacteriaceae. The enzyme blaOXA-48 was found in 34.5% (20/58), blaKPC in 29.3% (17/58), blaNDM enzymes in 20.7% (12/58) and blaVIM in 8.6% (5/58) of the isolates. The overall mortality among CPE patients was 25.9% (15/58) and attributable mortality of CPE was 53.3% (8/15). Multivariate analysis revealed four risk factors to be independent predictors of CPE carriage: the length of hospital admission > 20 days (AOR: 4.9, 95% CI: 1.4–15.5; P < 0.001), hospital admission within the previous year (AOR: 22.3, 95% CI: 3.9–88.4; P < 0.001), exposure to a healthcare facility in a country with high or unknown carbapenem-resistant enterobacteriaceae prevalence 3 months before admission (AOR: 11.8, 95% CI: 2.2–63.2; P < 0.01) and the use of antibiotics longer than 10 days (AOR: 5.2, 95% CI: 1.4–35.9; P < 0.05). The current risk-based screening strategy at hospital admission could not identify 37 (63.8%) of the 58 CPE-positive patients. Epidemiological investigation and genotyping revealed that no outbreaks due to CPE occurred during this period. Conclusion Overall, the CPE carriage rate in patients was very low, the attributable mortality, however, is alarming (53%). BlaOXA-48 and blaKPC were the main cause of carbapenem resistance in enterobacteriaceae. Although the strict application of standard infection control measures was effective for prevention of outbreaks in this setting, an enlarged risk based targeted screening strategy has to be implemented.
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Affiliation(s)
- Luigi Segagni Lusignani
- Department of Infection Control and Hospital Epidemiology, Medical University of Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria
| | - Elisabeth Presterl
- Department of Infection Control and Hospital Epidemiology, Medical University of Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria
| | - Beata Zatorska
- Department of Infection Control and Hospital Epidemiology, Medical University of Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria
| | - Miriam Van den Nest
- Department of Infection Control and Hospital Epidemiology, Medical University of Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria
| | - Magda Diab-Elschahawi
- Department of Infection Control and Hospital Epidemiology, Medical University of Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria
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Barcudi D, Sosa EJ, Lamberghini R, Garnero A, Tosoroni D, Decca L, Gonzalez L, Kuyuk MA, Lopez T, Herrero I, Cortes P, Figueroa M, Egea AL, Gagetti P, Fernandez Do Porto DA, Corso A, Turjanski AG, Bocco JL, Sola C. MRSA dynamic circulation between the community and the hospital setting: New insights from a cohort study. J Infect 2019; 80:24-37. [PMID: 31606351 DOI: 10.1016/j.jinf.2019.10.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Revised: 09/09/2019] [Accepted: 10/03/2019] [Indexed: 12/21/2022]
Abstract
Dissemination of methicillin-resistant-Staphylococcus aureus/(MRSA) is a worldwide concern both in hospitals [healthcare-associated-(HA)-MRSA] and communities [community-associated-(CA)-MRSA]. Knowledge on when and where MRSA colonization is acquired and what clones are involved is necessary, to focus efforts for prevention of hospital-acquired MRSA-infections. METHODS A prospective/longitudinal cohort study was performed in eight Argentina hospitals (Cordoba/ October-December/2014). Surveillance cultures for MRSA (nose-throat-inguinal) were obtained on admission and at discharge. MRSA strains were genetically typed as CA-MRSAG and HA-MRSAG genotypes. RESULTS Overall, 1419 patients were screened and 534 stayed at hospital for ≥3 days. S. aureus admission prevalence was 30.9% and 4.2% for MRSA. Overall MRSA acquisition rate was 2.3/1000 patient-days-at-risk with a MRSA acquisition prevalence of 1.96% (95%CI: 1.0%-3.4%); 3.2% of patients were discharged back to community with MRSA. CA-MRSAG accounted for 84.6% of imported, 100.0% of hospital-acquired and 94% of discharged MRSA strains. Most imported and acquired MRSA strains belonged to two major epidemic CA-MRSA clones spread in Argentina: PFGEtypeI-ST5-IVa-t311-PVL+ and PFGEtypeN/ST30-IVc-t019-PVL+. CONCLUSIONS CA-MRSA clones, particularly ST5-IV-PVL+ and ST30-IV-PVL+, with main reservoir in the community, not only enter but also are truly acquired within hospital, causing healthcare-associated-hospital-onset infections, having a transmission capacity greater or similar than HA-MRSAG. This information is essential to develop appropriate MRSA infection prevention-control programs, considering hospital and community.
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Affiliation(s)
- Danilo Barcudi
- Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI) CONICET and Universidad Nacional de Córdoba; Departamento de Bioquímica Clínica; Facultad de Ciencias Químicas; Haya de La Torre y Medina Allende, Ciudad Universitaria, X5000-Córdoba, Argentina
| | - Ezequiel J Sosa
- Instituto de Cálculo, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, CONICET, Ciudad Universitaria, Pabellón 2, C1428EHA Ciudad de Buenos Aires, Argentina; Instituto de Química Biológica de La Facultad de Ciencias Exactas y Naturales (IQUIBICEN)-CONICET, Ciudad Universitaria, Pabellón 2, C1428EHA Ciudad de Buenos Aires, Argentina
| | - Ricardo Lamberghini
- Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Bajada Pucará 2025, X5000 Córdoba, Argentina; Hospital Guillermo Rawson, Bajada Pucará 2025, X5000 Córdoba, Argentina
| | - Analía Garnero
- Hospital de Niños de la Santísima Trinidad de Córdoba, Córdoba, Bajada Pucará 787, X5000 ANN, Argentina
| | - Dario Tosoroni
- Facultad de Medicina, Universidad Católica de Córdoba, Jacinto Ríos 555, X5004ASK Córdoba, Argentina
| | - Laura Decca
- Clínica Regional del SUD-Río IV, Av. Italia 1262, X5800 Río Cuarto, Córdoba, Argentina
| | - Liliana Gonzalez
- Hospital Infantil Municipal de Córdoba, Juan Antonio Lavalleja 3050, X5000 Córdoba, Argentina
| | - María A Kuyuk
- Hospital Militar Córdoba, Cruz Roja Argentina 1114, X5000 Córdoba, Argentina
| | - Teresa Lopez
- Hospital Guillermo Rawson, Bajada Pucará 2025, X5000 Córdoba, Argentina
| | - Ivana Herrero
- Hospital de Urgencias, Catamarca 441, X5000 Córdoba, Argentina
| | - Paulo Cortes
- Hospital Pediátrico del Niño Jesús, Av. Castro Barros 650, X5000HTT Córdoba, Argentina
| | - Myrian Figueroa
- Hospital Misericordia, Nuevo Siglo, Belgrano 1502, X5000 Córdoba, Argentina
| | - Ana L Egea
- Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI) CONICET and Universidad Nacional de Córdoba; Departamento de Bioquímica Clínica; Facultad de Ciencias Químicas; Haya de La Torre y Medina Allende, Ciudad Universitaria, X5000-Córdoba, Argentina
| | - Paula Gagetti
- Servicio Antimicrobianos, Instituto Nacional de Enfermedades Infecciosas (INEI)-ANLIS "Dr. Carlos G. Malbrán", Av. Vélez Sarsfield 563, C1282AFF Ciudad Autónoma de Buenos Aires, Argentina
| | - Darío A Fernandez Do Porto
- Instituto de Cálculo, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, CONICET, Ciudad Universitaria, Pabellón 2, C1428EHA Ciudad de Buenos Aires, Argentina; Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, C1428EHA Ciudad de Buenos Aires, Argentina
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- The members of the Study Group are listed in the Acknowledgments section, where the participants of each hospital and their affiliations are described
| | - Alejandra Corso
- Servicio Antimicrobianos, Instituto Nacional de Enfermedades Infecciosas (INEI)-ANLIS "Dr. Carlos G. Malbrán", Av. Vélez Sarsfield 563, C1282AFF Ciudad Autónoma de Buenos Aires, Argentina
| | - Adrián G Turjanski
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, C1428EHA Ciudad de Buenos Aires, Argentina
| | - José L Bocco
- Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI) CONICET and Universidad Nacional de Córdoba; Departamento de Bioquímica Clínica; Facultad de Ciencias Químicas; Haya de La Torre y Medina Allende, Ciudad Universitaria, X5000-Córdoba, Argentina
| | - Claudia Sola
- Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI) CONICET and Universidad Nacional de Córdoba; Departamento de Bioquímica Clínica; Facultad de Ciencias Químicas; Haya de La Torre y Medina Allende, Ciudad Universitaria, X5000-Córdoba, Argentina.
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Stacey HJ, Clements CS, Welburn SC, Jones JD. The prevalence of methicillin-resistant Staphylococcus aureus among diabetic patients: a meta-analysis. Acta Diabetol 2019; 56:907-921. [PMID: 30955124 PMCID: PMC6597605 DOI: 10.1007/s00592-019-01301-0] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Accepted: 02/11/2019] [Indexed: 12/19/2022]
Abstract
AIMS Diabetic patients have multiple risk factors for colonisation with methicillin-resistant Staphylococcus aureus (MRSA), a nosocomial pathogen associated with significant morbidity and mortality. This meta-analysis was conducted to estimate the prevalence of MRSA among diabetic patients. METHODS The MEDLINE, Embase, BIOSIS, and Web of Science databases were searched for studies published up to May 2018 that reported primary data on the prevalence of MRSA in 10 or more diabetic patients. Two authors independently assessed study eligibility and extracted the data. The main outcomes were the pooled prevalence rates of MRSA colonisation and infection among diabetic populations. RESULTS Eligible data sets were divided into three groups containing data about the prevalence of MRSA colonisation or in diabetic foot or other infections. From 23 data sets, the prevalence of MRSA colonisation among 11577 diabetics was 9.20% (95% CI, 6.26-12.63%). Comparison of data from 14 studies that examined diabetic and non-diabetic patients found that diabetics had a 4.75% greater colonisation rate (P < 0.0001). From 41 data sets, the prevalence of MRSA in 10994 diabetic foot infection patients was 16.78% (95% CI, 13.21-20.68%). Among 2147 non-foot skin and soft-tissue infections, the MRSA prevalence rate was 18.03% (95% CI, 6.64-33.41). CONCLUSIONS The prevalence of MRSA colonisation among diabetic patients is often higher than among non-diabetics; this may make targeted screening attractive. In the UK, many diabetic patients may already be covered by the current screening policies. The prevalence and impact of MRSA among diabetic healthcare workers requires further research. The high prevalence of MRSA among diabetic foot infections may have implications for antimicrobial resistance, and should encourage strategies aimed at infection prevention or alternative therapies.
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Affiliation(s)
- Helen J Stacey
- Edinburgh Medical School, University of Edinburgh, Chancellor's Building, 49 Little France Crescent, EH16 4SB, Edinburgh, UK
| | - Caitlin S Clements
- Division of Infection and Pathway Medicine, Edinburgh Medical School, Biomedical Sciences, University of Edinburgh, Chancellor's Building, 49 Little France Crescent, EH16 4SB, Edinburgh, UK
| | - Susan C Welburn
- Division of Infection and Pathway Medicine, Edinburgh Medical School, Biomedical Sciences, University of Edinburgh, Chancellor's Building, 49 Little France Crescent, EH16 4SB, Edinburgh, UK
- International Campus, ZJU-UoE Institute, Zhejiang University School of Medicine, Zhejiang University, 718 East Haizhou Road, 314400, Haining, Zhejiang, People's Republic of China
| | - Joshua D Jones
- Division of Infection and Pathway Medicine, Edinburgh Medical School, Biomedical Sciences, University of Edinburgh, Chancellor's Building, 49 Little France Crescent, EH16 4SB, Edinburgh, UK.
- International Campus, ZJU-UoE Institute, Zhejiang University School of Medicine, Zhejiang University, 718 East Haizhou Road, 314400, Haining, Zhejiang, People's Republic of China.
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16
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Krämer J, Triantafyllias K, Kohnen W, Leber M, Dederichs-Masius U, Zucker A, Körber J, Schwarting A. Patients with Rheumatic Diseases do not have an Increased Risk of MRSA Carrier Status. Rheumatol Ther 2018; 5:371-381. [PMID: 29860570 PMCID: PMC6251847 DOI: 10.1007/s40744-018-0116-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Indexed: 10/27/2022] Open
Abstract
INTRODUCTION The aim of this study was to determine the prevalence of methicillin-resistant Staphylococcus aureus (MRSA) both in rheumatologic and non-rheumatologic rehabilitation centers. In addition, we sought to evaluate the practice value of existing screening recommendations of the German Commission for Hospital Hygiene and Infection Prevention (KRINKO). METHODS The analysis was performed in four rehabilitation clinics (rheumatology, psychosomatic medicine, oncology, and cardiology) with at least 200 patients per clinic tested for MRSA. RESULTS Nine (1.1%) of the 842 patients were colonized with MRSA. Only five of them should have been tested according to the commission's recommendations. The prevalence was 0.5% (n = 207) in rheumatologic, 0.9% (n = 224) in psychosomatic, 1.4% (n = 209) in oncologic and 1.5% (n = 202) in cardiologic patients. We found a greater exposure to risk factors in cardiologic and oncologic patients. Among patients with carrier status, a higher percentage was exposed to three potential risk factors not applied by the commission. CONCLUSIONS The prevalence of MRSA in our cohort correlates with data from previous studies. The low percentage among rheumatologic patients suggests that they are not more likely to reveal MRSA carrier status than other patient groups and that long-term immunosuppression does not necessarily represent a risk factor for MRSA colonization. Since only five out of nine patients with carrier status would have been detected following the recommendations of the KRINKO, further studies on potential risk factors are warranted.
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Affiliation(s)
- Judith Krämer
- University Medical Center, Johannes Gutenberg University, Mainz, Germany
| | | | - Wolfgang Kohnen
- University Medical Center, Johannes Gutenberg University, Mainz, Germany
| | | | | | | | | | - Andreas Schwarting
- University Medical Center, Johannes Gutenberg University, Mainz, Germany.
- ACURA Rheumatology Center, Bad Kreuznach, Germany.
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17
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Currie K, King C, McAloney-Kocaman K, Roberts NJ, MacDonald J, Dickson A, Cairns S, Khanna N, Flowers P, Reilly J, Price L. Barriers and enablers to meticillin-resistant Staphylococcus aureus admission screening in hospitals: a mixed-methods study. J Hosp Infect 2018; 101:100-108. [PMID: 30098382 DOI: 10.1016/j.jhin.2018.08.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Accepted: 08/03/2018] [Indexed: 10/28/2022]
Abstract
BACKGROUND To reduce the risk of transmission of meticillin-resistant Staphylococcus aureus (MRSA), international guidelines recommend admission screening to identify hospital patients at risk of colonization. However, routine monitoring indicates that optimum screening compliance levels are not always achieved. In order to enhance compliance, we must better understand those factors which influence staff screening behaviours. AIM To identify factors which influence staff compliance with hospital MRSA screening policies. METHODS A sequential two-stage mixed-methods design applied constructs from normalization process theory and the theoretical domains framework to guide data collection and analysis. Initial qualitative findings informed subsequent development of a national cross-sectional survey of nursing staff (N = 450). Multiple regression modelling identified which barriers and enablers best predict staff compliance. FINDINGS Three factors were significant in predicting optimum (>90%) compliance with MRSA screening: having MRSA screening routinized within the admission process; category of clinical area; feedback of MRSA screening compliance within the clinical area. Integration of data-sets indicated that organizational systems which 'make doing the right thing easy' influence compliance, as does local ward culture. Embedded values and beliefs regarding the relative (de)prioritization of MRSA screening are important. CONCLUSION To our knowledge, this is the first study to provide original evidence of barriers and enablers to MRSA screening, applying both sociological and psychological theory. As antimicrobial resistance is a global health concern, these findings have international relevance for screening programmes. Future policy recommendations or behaviour change interventions, based on the insights presented here, could have significant impact upon improving screening compliance.
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Affiliation(s)
- K Currie
- Safeguarding Health through Infection Prevention (SHIP) Research Group, Glasgow Caledonian University, Glasgow, UK.
| | - C King
- Safeguarding Health through Infection Prevention (SHIP) Research Group, Glasgow Caledonian University, Glasgow, UK
| | - K McAloney-Kocaman
- Safeguarding Health through Infection Prevention (SHIP) Research Group, Glasgow Caledonian University, Glasgow, UK
| | - N J Roberts
- Safeguarding Health through Infection Prevention (SHIP) Research Group, Glasgow Caledonian University, Glasgow, UK
| | - J MacDonald
- Safeguarding Health through Infection Prevention (SHIP) Research Group, Glasgow Caledonian University, Glasgow, UK
| | - A Dickson
- Safeguarding Health through Infection Prevention (SHIP) Research Group, Glasgow Caledonian University, Glasgow, UK
| | - S Cairns
- NHS Health Protection Scotland, Glasgow, UK
| | - N Khanna
- NHS Greater Glasgow & Clyde, Glasgow, UK
| | - P Flowers
- Safeguarding Health through Infection Prevention (SHIP) Research Group, Glasgow Caledonian University, Glasgow, UK
| | - J Reilly
- Safeguarding Health through Infection Prevention (SHIP) Research Group, Glasgow Caledonian University, Glasgow, UK; NHS Health Protection Scotland, Glasgow, UK
| | - L Price
- Safeguarding Health through Infection Prevention (SHIP) Research Group, Glasgow Caledonian University, Glasgow, UK
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Henderson A, Nimmo GR. Control of healthcare- and community-associated MRSA: recent progress and persisting challenges. Br Med Bull 2018; 125:25-41. [PMID: 29190327 DOI: 10.1093/bmb/ldx046] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Accepted: 10/31/2017] [Indexed: 12/31/2022]
Abstract
BACKGROUND Healthcare adapted meticillin-resistant Staphylococcus aureus (MRSA) has spread to hospitals around the world over 50 years. More recently, other strains of MRSA have emerged with the ability to spread in the community and infect otherwise healthy individuals. Morbidity and mortality associated with MRSA remains high and its control in both the healthcare and community setting has proven challenging. SOURCES OF DATA Pubmed (Medline). AREAS OF AGREEMENT The use of targeted screening and decolonization, hand hygiene and antimicrobial stewardship is supported by the most robust studies, though many studies have implemented bundles for effective healthcare-associated (HA)-MRSA control. AREAS OF CONTENTION Universal screening, universal decolonization and contact precautions for HA-MRSA control are supported by less evidence. Some interventions may not be cost-effective. Contact precautions may be associated with potential for patient harm. Evidence for effective control community acquired (CA)-MRSA is largely lacking. GROWING POINTS Programmes that focus on implementing bundles of interventions aimed at targeting HA-MRSA are more likely to be effective, with an emphasis on hand hygiene as a key component. Control of CA-MRSA is likely to be more difficult to achieve and relies on prevalence, risk factors and community healthcare interactions on a broader scale. AREAS TIMELY FOR DEVELOPING RESEARCH Further research in the area of CA-MRSA in particular is required. Antimicrobial stewardship for both CA and HA-MRSA is promising, as is the role of whole genome sequencing in characterizing transmission. However, further work is required to assess their long-term roles in controlling MRSA. With many institutions applying widespread use of chlorhexidine washes, monitoring for chlorhexidine resistance is paramount to sustaining efforts at controlling MRSA.
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Affiliation(s)
- Andrew Henderson
- Infection Management Services, Princess Alexandra Hospital, Woolloongabba, Queensland 4102, Australia.,School of Chemistry and Molecular Biosciences, University of Queensland, St Lucia, Queensland 4067, Australia.,University of Queensland Centre for Clinical Research, Herston, Queensland 4029, Australia
| | - Graeme R Nimmo
- Pathology Queensland Central Laboratory, Herston, Queensland 4029, Australia.,School of Medicine, Griffith University, Southport 4222, Queensland, Australia
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Nelwan EJ, Sinto R, Subekti D, Adiwinata R, Waslia L, Loho T, Safari D, Widodo D. Screening of methicillin-resistant Staphylococcus aureus nasal colonization among elective surgery patients in referral hospital in Indonesia. BMC Res Notes 2018; 11:56. [PMID: 29357913 PMCID: PMC5778668 DOI: 10.1186/s13104-018-3150-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2017] [Accepted: 01/09/2018] [Indexed: 11/10/2022] Open
Abstract
OBJECTIVE Methicillin-resistant Staphylococcus aureus (MRSA) colonization is associated with serious surgical site infection in high-risk patients. High prevalence of MRSA colonization was reported in many settings, nonetheless local data is required. The purpose of this study is to identify the prevalence and risk factor of MRSA nasal carriage in adult patients in National Referral Hospital in Indonesia before underwent elective surgical procedure. RESULTS From 384 patients, 16.9% patients of them had undergone orthopaedic surgery, 51.3% had received antibiotics within the previous 3-month and 41.1% patients had history of hospitalization within the previous 1 year. Total of 21.6% patients were on invasive devices for at least 48 h before the operation; 24.2% had an open wound; 19.3% patients were referred from other hospital/ward. Of these patients, solid tumor without metastasis was the most common factor identified by the Charlson index (38.3%). Nasal colonization of Gram-positive bacteria was detected in 76.8%; S. aureus in 15.6% of patients (n = 60). MRSA was identified in three isolates (0.8%) by both culture and polymerase chain reaction (PCR) tests. Due to low prevalence of MRSA nasal carriage, this finding supports the recommendation to not routinely apply mupirocin for nasal decolonization on patient planned for surgery in Indonesia.
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Affiliation(s)
- Erni J Nelwan
- Division of Tropical and Infectious Diseases, Department of Internal Medicine, Faculty of Medicine Universitas Indonesia, Dr. Cipto Mangunkusumo General Hospital, Jl. Salemba Raya 6, Jakarta, 10430, Indonesia.
| | - Robert Sinto
- Division of Tropical and Infectious Diseases, Department of Internal Medicine, Faculty of Medicine Universitas Indonesia, Dr. Cipto Mangunkusumo General Hospital, Jl. Salemba Raya 6, Jakarta, 10430, Indonesia
| | - Decy Subekti
- Eijkman Oxford Clinical Reseach Unit, Jl. Diponegoro No. 69, Jakarta, 10430, Indonesia
| | - Randy Adiwinata
- Division of Tropical and Infectious Diseases, Department of Internal Medicine, Faculty of Medicine Universitas Indonesia, Dr. Cipto Mangunkusumo General Hospital, Jl. Salemba Raya 6, Jakarta, 10430, Indonesia
| | - Lia Waslia
- Eijkman Oxford Clinical Reseach Unit, Jl. Diponegoro No. 69, Jakarta, 10430, Indonesia
| | - Tonny Loho
- Department of Clinical Pathology, Faculty of Medicine Universitas Indonesia, Dr. Cipto Mangunkusumo General Hospital, Jl. Salemba Raya 6, Jakarta, 10430, Indonesia
| | - Dodi Safari
- Eijkman Institute for Molecular Biology, Jl. Diponegoro No. 69, Jakarta, 10430, Indonesia
| | - Djoko Widodo
- Division of Tropical and Infectious Diseases, Department of Internal Medicine, Faculty of Medicine Universitas Indonesia, Dr. Cipto Mangunkusumo General Hospital, Jl. Salemba Raya 6, Jakarta, 10430, Indonesia
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20
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Wang B, Suh KN, Muldoon KA, Oake N, Forster A, Ramotar K, Roth VR. Risk Factors for Methicillin-Resistant Staphylococcus aureus (MRSA) Colonization Among Patients Admitted to Obstetrical Units: A Nested Case-Control Study. JOURNAL OF OBSTETRICS AND GYNAECOLOGY CANADA 2017; 40:669-676. [PMID: 29248358 DOI: 10.1016/j.jogc.2017.09.025] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Revised: 09/29/2017] [Accepted: 09/29/2017] [Indexed: 10/18/2022]
Abstract
OBJECTIVE Methicillin-resistant Staphylococcus aureus (MRSA) among obstetrical patients can increase birth complications for both mothers and infants, but little is known about the risk factors for MRSA in this population. The objective of this study was to determine the prevalence of MRSA among obstetrical patients and identify risk factors associated with MRSA colonization. METHODS This nested case-control study used obstetrical patients with MRSA colonization identified through a universal screening program at The Ottawa Hospital (February 2008-January 2010). Cases and three matched controls were compared using chi-square tests for categorical variables, median and interquartile range (IQR), and Wilcoxon rank-sum tests for continuous variables. Conditional logistic regression using ORs and 95% CIs was used to identify risk factors. Standard microbiologic techniques and pulsed-field gel electrophoresis of the MRSA isolates from case patients were performed. RESULTS Out of 11 478 obstetrical patients, 39 (0.34%) were MRSA colonized; 117 patients were selected as matched controls. The median age was 30 (IQR 27.5-35.00) and median length of stay was 2.55 days (IQR 1.95-3.24). Only MRSA cases had a previous MRSA infection (4 vs. 0). MRSA cases had significantly higher parity (median 3; IQR 2-5) compared with controls (median 2; IQR 1-3) (OR 1.52; 95% CI 1.22-1.90) CONCLUSION: This study identified a low prevalence of MRSA among obstetrical patients. Risk factors associated with MRSA colonization were previous MRSA infection and multiparity. Obstetrical patients who previously tested positive for MRSA should be placed on contact precautions at the time of hospital admission because this is a risk factor for future colonization.
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Affiliation(s)
- Bing Wang
- Department of Pathology and Laboratory Medicine, The Ottawa Hospital and University of Ottawa, Ottawa, ON
| | - Kathryn N Suh
- Department of Medicine, The Ottawa Hospital and University of Ottawa, Ottawa, ON; Ottawa Hospital Research Institute, Ottawa, ON; School of Epidemiology, Public Health and Preventive Medicine, University of Ottawa, Ottawa, ON.
| | - Katherine A Muldoon
- Ottawa Hospital Research Institute, Ottawa, ON; School of Epidemiology, Public Health and Preventive Medicine, University of Ottawa, Ottawa, ON
| | - Natalie Oake
- Department of Medicine, The Ottawa Hospital and University of Ottawa, Ottawa, ON
| | - Alan Forster
- Department of Medicine, The Ottawa Hospital and University of Ottawa, Ottawa, ON; Ottawa Hospital Research Institute, Ottawa, ON; School of Epidemiology, Public Health and Preventive Medicine, University of Ottawa, Ottawa, ON
| | - Karam Ramotar
- Department of Pathology and Laboratory Medicine, The Ottawa Hospital and University of Ottawa, Ottawa, ON
| | - Virginia R Roth
- Department of Medicine, The Ottawa Hospital and University of Ottawa, Ottawa, ON; Ottawa Hospital Research Institute, Ottawa, ON; School of Epidemiology, Public Health and Preventive Medicine, University of Ottawa, Ottawa, ON
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