1
|
Gray NA, Toy L, Dalla-Bona K, Broom J, Gray M. The lived experience of haemodialysis patients managed with transmission-based precautions for MDRO colonisation: A qualitative study. Infect Dis Health 2022; 27:211-218. [PMID: 35690584 DOI: 10.1016/j.idh.2022.05.003] [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: 02/15/2022] [Revised: 05/11/2022] [Accepted: 05/17/2022] [Indexed: 10/18/2022]
Abstract
BACKGROUND Patients undergoing haemodialysis colonised with multi-drug resistant organisms (MDROs) are commonly managed with transmission-based precautions (TBP) to prevent nosocomial transmission. TBP have been linked to mixed effects on patient psychological well-being and clinical care. This study was designed to report the lived experience of dialysis patients managed with TBP. METHODS A qualitative study of 15 patients undergoing haemodialysis managed with TBP was performed. Participants took part in individual semi-structured interviews. Data was analysed utilising an interpretive phenomenological approach. RESULTS Four themes were identified. 1. Communication of what MDRO screening meant, the results, and implications of MDRO positivity was perceived by many patients as insufficient and inconsistent. 2. Experiences of care in isolation were described, with both positive (privacy) and negative (reduced interaction) experiences identified. 3. Psychosocial and emotional responses including concern about health implications and stigma were reported, but also screening was described by some as increasing their perception of being cared for by health care workers, as they felt all health risks were being managed. 4. Confusion around perceived inconsistencies of management, particularly across different environments (eg hospital vs home) and staff. CONCLUSION TBP have complex positive and negative impacts on patients which should be considered when developing MDRO management policy and communication around such policy. Strategies to improve communication, patient and staff education, and remove (or explain) perceived inconsistencies of practice may reduce the negative consequences of TBP leading to improved delivery of quality, person-centred care.
Collapse
Affiliation(s)
- Nicholas A Gray
- Department of Nephrology, Sunshine Coast University Hospital, Birtinya, Queensland, Australia; University of the Sunshine Coast, Sippy Downs, Queensland, Australia; Sunshine Coast Health Institute, Birtinya, Queensland, Australia.
| | - Lisa Toy
- University of the Sunshine Coast, Sippy Downs, Queensland, Australia
| | - Kim Dalla-Bona
- Department of Nephrology, Sunshine Coast University Hospital, Birtinya, Queensland, Australia
| | - Jennifer Broom
- Infectious Diseases Research Network, Sunshine Coast University Hospital, Birtinya, Queensland, Australia; The University of Queensland, Herston, Queensland, Australia. https://twitter.com/jenniferkbroom
| | - Marion Gray
- University of Southern Queensland, Ipswich, Queensland, Australia
| |
Collapse
|
2
|
A systematic review of the effectiveness of cohorting to reduce transmission of healthcare-associated C. difficile and multidrug-resistant organisms. Infect Control Hosp Epidemiol 2021; 41:691-709. [PMID: 32216852 DOI: 10.1017/ice.2020.45] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND Cohorting of patients and staff is a control strategy often used to prevent the spread of infection in healthcare institutions. However, a comprehensive evaluation of cohorting as a prevention approach is lacking. METHODS We performed a systematic review of studies that used cohorting as part of an infection control strategy to reduce hospital-acquired infections. We included studies published between 1966 and November 30, 2019, on adult populations hospitalized in acute-care hospitals. RESULTS In total, 87 studies met inclusion criteria. Study types were quasi-experimental "before and after" (n = 35), retrospective (n = 49), and prospective (n = 3). Case-control analysis was performed in 7 studies. Cohorting was performed with other infection control strategies in the setting of methicillin-resistant Staphylococcus aureus (MRSA, n = 22), Clostridioides difficile infection (CDI, n = 6), vancomycin-resistant Enterococcus (VRE, n = 17), carbapenem-resistant Enterobacteriaceae infections (CRE, n = 22), A. baumannii (n = 15), and other gram-negative infections (n = 5). Cohorting was performed either simultaneously (56 of 87, 64.4%) or in phases (31 of 87, 35.6%) to help contain transmission. In 60 studies, both patients and staff were cohorted. Most studies (77 of 87, 88.5%) showed a decline in infection or colonization rates after a multifaceted approach that included cohorting as part of the intervention bundle. Hand hygiene compliance improved in approximately half of the studies (8 of 15) during the respective intervention. CONCLUSION Cohorting of staff, patients, or both is a frequently used and reasonable component of an enhanced infection control strategy. However, determining the effectiveness of cohorting as a strategy to reduce transmission of MDRO and C. difficile infections is difficult, particularly in endemic situations.
Collapse
|
3
|
Factors associated with acquisition of glycopeptide-resistant enterococci during a single-strain outbreak. Epidemiol Infect 2019; 147:e158. [PMID: 31063114 PMCID: PMC6518758 DOI: 10.1017/s0950268818003655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
The aim of our study was to describe and to investigate the factors associated with glycopeptide-resistant enterococci (GRE) acquisition during a single-strain outbreak which occurred in several wards of hospital from September 2013 to January 2014. We designed a case–control study. Analyses were performed using Bayesian methods. Univariate logistic regressions with informative priors from published studies were conducted. A multivariate model was build including variables with a probability of odd-ratio exceeding one (Pr) >85% or <15%. Thirteen cases and 52 controls were recruited. The description of this outbreak highlighted the importance to quickly detect patients at risk of GRE carriage in order to implement the isolation measures and to transfer to dedicated department if they are effectively carriers. Following multivariate analysis, antibiotics during hospitalisation (Pr = 0.968), number of hospitalisation days in the year (Pr = 0.964), antacids intake (Pr = 0.878) (with a risk increase), immunosuppression (Pr = 0.026) and isolation measures (Pr = 0.003) (both with protective effect) were associated with GRE acquisition. The use of Bayesian statistics was useful because of our study's small population size and prior information availability.
Collapse
|
4
|
Inkster T, Coia J, Meunier D, Doumith M, Martin K, Pike R, Imrie L, Kane H, Hay M, Wiuff C, Wilson J, Deighan C, Hopkins KL, Woodford N, Hill R. First outbreak of colonization by linezolid- and glycopeptide-resistant Enterococcus faecium harbouring the cfr gene in a UK nephrology unit. J Hosp Infect 2017; 97:397-402. [PMID: 28698020 DOI: 10.1016/j.jhin.2017.07.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Accepted: 07/04/2017] [Indexed: 01/06/2023]
Abstract
AIM To describe an outbreak of colonization by linezolid- and glycopeptide-resistant Enterococcus faecium harbouring the cfr gene in a UK nephrology unit. METHODS Isolates of linezolid-resistant E. faecium were typed by pulsed-field gel electrophoresis (PFGE), and examined by polymerase chain reaction (PCR) and sequencing for the transmissible cfr gene that confers resistance to linezolid. Enhanced environmental cleaning, initial and weekly screening of all patients, and monitoring of adherence to standard infection control precautions were implemented. FINDINGS Five patients with pre-existing renal disease were found to have rectal colonization with linezolid-resistant E. faecium over a two-week period. The index case was a 57-year-old male from India who had travelled to the UK. One patient also had a linezolid-resistant E. faecium of a different PFGE profile isolated from a heel wound. All isolates were confirmed to harbour the cfr gene by PCR and Sanger sequencing, and all were resistant to glycopeptides (VanA phenotype). CONCLUSIONS This article describes the first UK outbreak with a single strain of linezolid- and glycopeptide-resistant E. faecium harbouring the cfr gene, affecting five patients in a nephrology unit. Following the implementation of aggressive infection control measures, no further cases were detected beyond a two-week period.
Collapse
Affiliation(s)
- T Inkster
- Queen Elizabeth University Hospital, Glasgow, UK.
| | - J Coia
- Glasgow Royal Infirmary, Glasgow, UK
| | - D Meunier
- Antimicrobial Resistance and Healthcare Associated Infections Reference Unit, National Infection Service, Public Health England, London, UK
| | - M Doumith
- Antimicrobial Resistance and Healthcare Associated Infections Reference Unit, National Infection Service, Public Health England, London, UK
| | - K Martin
- Antimicrobial Resistance and Healthcare Associated Infections Reference Unit, National Infection Service, Public Health England, London, UK
| | - R Pike
- Antimicrobial Resistance and Healthcare Associated Infections Reference Unit, National Infection Service, Public Health England, London, UK
| | - L Imrie
- Health Protection Scotland, Glasgow, UK
| | - H Kane
- Health Protection Scotland, Glasgow, UK
| | - M Hay
- Glasgow Royal Infirmary, Glasgow, UK
| | - C Wiuff
- Health Protection Scotland, Glasgow, UK
| | - J Wilson
- Health Protection Scotland, Glasgow, UK
| | - C Deighan
- Glasgow Royal Infirmary, Glasgow, UK
| | - K L Hopkins
- Antimicrobial Resistance and Healthcare Associated Infections Reference Unit, National Infection Service, Public Health England, London, UK
| | - N Woodford
- Antimicrobial Resistance and Healthcare Associated Infections Reference Unit, National Infection Service, Public Health England, London, UK
| | - R Hill
- Antimicrobial Resistance and Healthcare Associated Infections Reference Unit, National Infection Service, Public Health England, London, UK
| |
Collapse
|
5
|
Freitas AR, Tedim AP, Francia MV, Jensen LB, Novais C, Peixe L, Sánchez-Valenzuela A, Sundsfjord A, Hegstad K, Werner G, Sadowy E, Hammerum AM, Garcia-Migura L, Willems RJ, Baquero F, Coque TM. Multilevel population genetic analysis ofvanAandvanB Enterococcus faeciumcausing nosocomial outbreaks in 27 countries (1986–2012). J Antimicrob Chemother 2016; 71:3351-3366. [DOI: 10.1093/jac/dkw312] [Citation(s) in RCA: 112] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2016] [Revised: 06/11/2016] [Accepted: 07/05/2016] [Indexed: 01/17/2023] Open
|
6
|
Samanipour A, Dashti-Khavidaki S, Abbasi MR, Abdollahi A. Antibiotic resistance patterns of microorganisms isolated from nephrology and kidney transplant wards of a referral academic hospital. J Res Pharm Pract 2016; 5:43-51. [PMID: 26985435 PMCID: PMC4776546 DOI: 10.4103/2279-042x.176559] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
OBJECTIVE Antibiotic use pattern and emergence of resistant bacteria are major concerns in clinical settings. This study aimed to detect common bacteria and their antibiotic sensitivity patterns in nephrology and kidney transplant wards. METHODS This 1-year, observational study was performed in the nephrology and kidney transplant wards of Imam Khomeini Hospital Complex, Tehran, Iran. All patients treated with antimicrobial agents for confirmed or suspected infections were included. Their demographic, clinical, and laboratory data (including biological media used for microbial culture, growth organisms, and antibiograms) were collected. Adherence of antimicrobial regimen to standard guidelines was also assessed. FINDINGS About half of the patients received antibiotic. The most common infecting bacteria were Escherichia coli followed by Enterococcus sp. and Staphylococcus aureus. E. coli showed high rate of sensitivity to carbapenems and nitrofurantoin and high rate of resistance to co-trimoxazole and ciprofloxacin. Enterococcus sp. in both wards had high rate of resistance to ampicillin and were all sensitive to linezolid. Unlike to the nephrology ward, more than 50% of Enterococcus sp. from kidney transplant ward was resistant to vancomycin. The most common type of S. aureus in this nephrology ward was methicillin-resistant S. aureus (MRSA). Most commonly-prescribed antibiotics were carbapenems followed by vancomycin, ciprofloxacin, and ceftriaxone. Antibiotic regimens were 75% and 83%, 85% and 91%, and 80% and 87% compatible with international guidelines in antibiotic types, dosages, and treatment durations, respectively, in nephrology and kidney transplant wards, respectively. CONCLUSION MRSA, fluoroquinolone-resistant E. coli, and vancomycin resistant Enterococcus species are major threats in nephrology and kidney transplant wards. Most commonly-prescribed antibiotics were carbapenems that necessitate providing internal guidelines by the teamwork of clinical pharmacist, infectious disease specialists, and nephrologists to avoid the widespread use of broad-spectrum antibiotics.
Collapse
Affiliation(s)
- Atieh Samanipour
- Department of Clinical Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Simin Dashti-Khavidaki
- Nephrology Research Center, Tehran University of Medical Sciences, Tehran, Iran; Center of Excellence in Nephrology, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad-Reza Abbasi
- Nephrology Research Center, Tehran University of Medical Sciences, Tehran, Iran; Center of Excellence in Nephrology, Tehran University of Medical Sciences, Tehran, Iran
| | - Alireza Abdollahi
- Department of Pathology, Vali-e-Asr Hospital, Tehran University of Medical Sciences, Tehran, Iran
| |
Collapse
|
7
|
Outbreaks of Vancomycin-Resistant Enterococci in Hospital Settings: A Systematic Review and Calculation of the Basic Reproductive Number. Infect Control Hosp Epidemiol 2015; 37:289-94. [DOI: 10.1017/ice.2015.301] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
BACKGROUNDVancomycin-resistant enterococci (VRE) have spread worldwide.OBJECTIVETo systematically review VRE outbreaks and estimate the pooled basic reproductive rate (R0) of VRE.METHODSEligible studies criteria were (1) published within 10 years, (2) report outbreak details, (3) involve 1 center, (4) estimate epidemic duration, and (5) concern adults. Descriptive analysis included number of index cases, secondary cases, and screened patients; infection control measures; and definition of contact patients. R0 was estimated by the equation R0=(ln2) D/td+1, with D as the generation time and td as the doubling time.RESULTSThirteen VRE outbreaks were retained from 180 articles and, among them, 10 were kept for R0 calculation. The mean (range) number of index cases was 2.3 (1–8) and the mean (range) number of secondary cases was 15 (3–56). The mean (range) number of screened patients was 174 (32–509), with pooled VRE prevalence of 5.4% (95% CI, 4.5%–6.3%). Contact precautions were reported in 12 studies (92%), wards were closed in 7 (54%), with cohorting in 6 (46%). Two major screening policies were implemented: (1) a surveillance program in the unit or hospital (7 studies [54%]) and (2) screening of selected contact patients (6 studies [46%]). The pooled R0 of VRE was 1.32 (interquartile range, 1.03–1.46).CONCLUSIONWe discerned considerable heterogeneity in screening policies during VRE outbreaks. Pooled R0 was higher than 1, confirming the epidemic nature of VRE.Infect. Control Hosp. Epidemiol. 2016;37(3):289–394
Collapse
|
8
|
Abat C, Raoult D, Rolain JM. Low Level of Resistance in Enterococci Isolated in Four Hospitals, Marseille, France. Microb Drug Resist 2015; 22:218-22. [PMID: 26247097 DOI: 10.1089/mdr.2015.0121] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Enterococci are gram-positive cocci responsible for various infections worldwide, and their prevalence of antibiotic resistance greatly varies worldwide. This study investigates the prevalence of resistance to antibiotics in enterococci from patients admitted in the four university hospitals of Marseille between January 2013 and September 2014. Two thousand nine hundred seventy-six patients-bacteria couples were identified (2,507 Enterococcus faecalis and 469 Enterococcus faecium) in the four university hospitals of Marseille. 1.3%, 8.9%, 1.4%, and 0% of E. faecalis strains were resistant to amoxicillin, gentamicin, teicoplanin, and vancomycin, respectively, and 83.9%, 49.2%, 1.3%, and 0.2% of E. faecium strains were resistant to amoxicillin, gentamicin, teicoplanin, and vancomycin, respectively. Resistance to aminoglycosides and vancomycin in strains isolated from blood cultures was significantly lower than that of most European countries included in the 2012 European Antimicrobial Resistance Surveillance Network report. Our low percentage of antibiotic resistance in enterococci is likely due to a low level of E. faecium infections, underlining the need to implement surveillance systems, especially to monitor the E. faecalis/E. faecium ratio evolution in blood cultures and others.
Collapse
Affiliation(s)
- Cédric Abat
- URMITE UM 63 CNRS 7278 IRD 198 INSERM U1905, IHU Méditerranée Infection, Faculté de Médecine et de Pharmacie, Aix-Marseille Université , Marseille, France
| | - Didier Raoult
- URMITE UM 63 CNRS 7278 IRD 198 INSERM U1905, IHU Méditerranée Infection, Faculté de Médecine et de Pharmacie, Aix-Marseille Université , Marseille, France
| | - Jean-Marc Rolain
- URMITE UM 63 CNRS 7278 IRD 198 INSERM U1905, IHU Méditerranée Infection, Faculté de Médecine et de Pharmacie, Aix-Marseille Université , Marseille, France
| |
Collapse
|
9
|
Reconsidering Contact Precautions for Endemic Methicillin-Resistant Staphylococcus aureus and Vancomycin-Resistant Enterococcus. Infect Control Hosp Epidemiol 2015; 36:1163-72. [DOI: 10.1017/ice.2015.156] [Citation(s) in RCA: 88] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
BACKGROUNDWhether contact precautions (CP) are required to control the endemic transmission of methicillin-resistant Staphylococcus aureus (MRSA) or vancomycin-resistant Enterococcus (VRE) in acute care hospitals is controversial in light of improvements in hand hygiene, MRSA decolonization, environmental cleaning and disinfection, fomite elimination, and chlorhexidine bathing.OBJECTIVETo provide a framework for decision making around use of CP for endemic MRSA and VRE based on a summary of evidence related to use of CP, including impact on patients and patient care processes, and current practices in use of CP for MRSA and VRE in US hospitals.DESIGNA literature review, a survey of Society for Healthcare Epidemiology of America Research Network members on use of CP, and a detailed examination of the experience of a convenience sample of hospitals not using CP for MRSA or VRE.PARTICIPANTSHospital epidemiologists and infection prevention experts.RESULTSNo high quality data support or reject use of CP for endemic MRSA or VRE. Our survey found more than 90% of responding hospitals currently use CP for MRSA and VRE, but approximately 60% are interested in using CP in a different manner. More than 30 US hospitals do not use CP for control of endemic MRSA or VRE.CONCLUSIONSHigher quality research on the benefits and harms of CP in the control of endemic MRSA and VRE is needed. Until more definitive data are available, the use of CP for endemic MRSA or VRE in acute care hospitals should be guided by local needs and resources.Infect Control Hosp Epidemiol 2015;36(10):1163–1172
Collapse
|
10
|
Lepelletier D, Berthelot P, Lucet JC, Fournier S, Jarlier V, Grandbastien B. French recommendations for the prevention of 'emerging extensively drug-resistant bacteria' (eXDR) cross-transmission. J Hosp Infect 2015; 90:186-95. [PMID: 25986165 DOI: 10.1016/j.jhin.2015.04.002] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2015] [Accepted: 04/07/2015] [Indexed: 11/15/2022]
Abstract
Controlling the spread of multi- or extensively drug-resistant bacteria (MDR or XDR) includes a dual strategy for reducing antibiotic prescriptions and preventing their spread from patient carriers. Standard precautions are applicable to all health professionals caring for any patients; additional barrier precautions (isolation) are recommended for patients carrying transmissible infectious diseases or MDR bacteria in sporadic or epidemic situations. Moreover, additional precautions may be required for populations at particular risk of infection or colonization by emerging XDR (eXDR), defined in our country as carbapenemase-producing Enterobacteriaceae and vancomycin-resistant enterococci. Our ability to detect and identify eXDR carriers early and ensure their follow-up, through effective communication between all those involved, is a significant challenge for controlling their spread. Thus, the French High Committee for Public Health has updated and standardized all French existing recommendations concerning the prevention of the cross-transmission of these bacteria, and these recommendations are summarized in this review. The recommendations are based on scientific and operational knowledge up to 2013. Different preventive strategies are recommended for patients found to be carrying eXDR and those who are considered to be at risk of having eXDR because of a history of contact. The local context, the experience of the infection control team, the different times at which detection of eXDR takes place (during admission, hospitalization, etc.) and the epidemiological situation (sporadic cases, clusters, outbreaks, widespread epidemic) must be included in risk assessments that in turn inform the control measures that should be applied in each clinical circumstance.
Collapse
Affiliation(s)
- D Lepelletier
- Unité de Gestion du risque Infectieux, Service de Bactériologie-Hygiène Hospitalière, CHU Nantes, Nantes, France; Université de Nantes, EA 3826, UFR Médecine, Nantes, France.
| | - P Berthelot
- Unité d'Hygiène Inter-Hospitalière, Service des Maladies Infectieuses et Laboratoire des Agents Infectieux et Hygiène, CHU St-Etienne, St Etienne, France
| | - J-C Lucet
- Unité Hospitalière de Lutte contre l'Infection Nosocomiale, GH Bichat - Claude Bernard, AP-HP, Paris, France
| | | | - V Jarlier
- Laboratoire de Bactériologie, Hôpital La Pitié-Salpêtrière, AP-HP, Paris, France; CLIN central de l'AP-HP, Paris, France
| | - B Grandbastien
- Unité de Lutte contre les Infections Nosocomiales, Service du Risque Infectieux, des Vigilances et d'Infectiologie, CHRU Lille, Lille, France
| |
Collapse
|
11
|
Warady BA, Bakkaloglu S, Newland J, Cantwell M, Verrina E, Neu A, Chadha V, Yap HK, Schaefer F. Consensus guidelines for the prevention and treatment of catheter-related infections and peritonitis in pediatric patients receiving peritoneal dialysis: 2012 update. Perit Dial Int 2013; 32 Suppl 2:S32-86. [PMID: 22851742 DOI: 10.3747/pdi.2011.00091] [Citation(s) in RCA: 126] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Affiliation(s)
- Bradley A Warady
- Division of Pediatric Nephrology, Children's Mercy Hospitals and Clinics, Kansas City, Missouri 64108, USA.
| | | | | | | | | | | | | | | | | |
Collapse
|
12
|
Werner G, Klare I, Fleige C, Geringer U, Witte W, Just HM, Ziegler R. Vancomycin-resistant vanB-type Enterococcus faecium isolates expressing varying levels of vancomycin resistance and being highly prevalent among neonatal patients in a single ICU. Antimicrob Resist Infect Control 2012; 1:21. [PMID: 22958440 PMCID: PMC3533821 DOI: 10.1186/2047-2994-1-21] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2012] [Accepted: 04/14/2012] [Indexed: 11/10/2022] Open
Abstract
UNLABELLED BACKGROUND Vancomycin-resistant isolates of E. faecalis and E. faecium are of special concern and patients at risk of acquiring a VRE colonization/infection include also intensively-cared neonates. We describe here an ongoing high prevalence of VanB type E. faecium in a neonatal ICU hardly to identify by routine diagnostics. METHODS During a 10 months' key period 71 E. faecium isolates including 67 vanB-type isolates from 61 patients were collected non-selectively. Vancomycin resistance was determined by different MIC methods (broth microdilution, Vitek® 2) including two Etest® protocols (McFarland 0.5/2.0. on Mueller-Hinton/Brain Heart Infusion agars). Performance of three chromogenic VRE agars to identify the vanB type outbreak VRE was evaluated (BrillianceTM VRE agar, chromIDTM VRE agar, CHROMagarTM VRE). Isolates were genotyped by SmaI- and CeuI-macrorestriction analysis in PFGE, plasmid profiling, vanB Southern hybridisations as well as MLST typing. RESULTS Majority of vanB isolates (n = 56, 79%) belonged to a single ST192 outbreak strain type showing an identical PFGE pattern and analyzed representative isolates revealed a chromosomal localization of a vanB2-Tn5382 cluster type. Vancomycin MICs in cation-adjusted MH broth revealed a susceptible value of ≤4 mg/L for 31 (55%) of the 56 outbreak VRE isolates. Etest® vancomycin on MH and BHI agars revealed only two vanB VRE isolates with a susceptible result; in general Etest® MIC results were about 1 to 2 doubling dilutions higher than MICs assessed in broth and values after the 48 h readout were 0.5 to 1 doubling dilutions higher for vanB VRE. Of all vanB type VRE only three, three and two isolates did not grow on BrillianceTM VRE agar, chromIDTM VRE agar and CHROMagarTM VRE, respectively. Permanent cross contamination via the patients' surrounding appeared as a possible risk factor for permanent VRE colonization/infection. CONCLUSIONS Low level expression of vanB resistance may complicate a proper routine diagnostics of vanB VRE and mask an ongoing high VRE prevalence. A high inoculum and growth on rich solid media showed the highest sensitivity in identifying vanB type resistance.
Collapse
Affiliation(s)
- Guido Werner
- Unit FG13 Nosocomial Infections, Robert Koch-Institute Wernigerode, Wernigerode, Germany
| | - Ingo Klare
- Unit FG13 Nosocomial Infections, Robert Koch-Institute Wernigerode, Wernigerode, Germany
| | - Carola Fleige
- Unit FG13 Nosocomial Infections, Robert Koch-Institute Wernigerode, Wernigerode, Germany
| | - Uta Geringer
- Unit FG13 Nosocomial Infections, Robert Koch-Institute Wernigerode, Wernigerode, Germany
| | - Wolfgang Witte
- Unit FG13 Nosocomial Infections, Robert Koch-Institute Wernigerode, Wernigerode, Germany
| | - Heinz-Michael Just
- Institute for Clinical Hygiene and Infectiology, Hospital Nord der Stadt Nürnberg, Nuremberg, Germany
| | - Renate Ziegler
- Institute for Clinical Hygiene and Infectiology, Hospital Nord der Stadt Nürnberg, Nuremberg, Germany
| |
Collapse
|
13
|
Bagdasarian N, Heung M, Malani PN. Infectious Complications of Dialysis Access Devices. Infect Dis Clin North Am 2012; 26:127-41. [DOI: 10.1016/j.idc.2011.09.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
|
14
|
Abstract
This Review focuses on the changing epidemiology of infections among patients with end-stage renal disease who are undergoing dialysis. In particular, bloodstream infections related to vascular access in patients undergoing hemodialysis, and peritonitis in patients undergoing peritoneal dialysis, are highlighted. Gram-positive (staphylococcal and enterococcal) bloodstream infections and Gram-negative peritonitis (especially extended-spectrum β-lactamase-producing organisms) contribute substantially to excess health-care use owing to infection caused by dialysis access. Although the management of peritoneal-dialysis-related peritonitis has been hampered by a dearth of randomized, controlled studies, epidemiological data have provided useful information. To overcome the problem of differing methods used to monitor infections within various dialysis centers, uniform reporting systems for vascular-access-related infection and peritoneal-dialysis-related peritonitis, as recommended by the Centers for Disease Control and Prevention and the International Society for Peritoneal Dialysis, respectively, are discussed. Infections unrelated to the port of entry for dialysis are also examined, namely hepatitis and respiratory infection. To address the disease burden, we examine the infection-related mortality as well as the implications for subsequent cardiovascular mortality.
Collapse
|
15
|
Fitzgibbons LN, Puls DL, Mackay K, Forrest GN. Management of Gram-Positive Coccal Bacteremia and Hemodialysis. Am J Kidney Dis 2011; 57:624-40. [DOI: 10.1053/j.ajkd.2010.12.013] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2010] [Accepted: 12/13/2010] [Indexed: 11/11/2022]
|
16
|
Common Approaches to the Control of Multidrug-resistant Organisms Other Than Methicillin-resistant Staphylococcus aureus (MRSA). Infect Dis Clin North Am 2011; 25:181-200. [DOI: 10.1016/j.idc.2010.11.006] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
17
|
Fortineau N, Bourdon N, Leclercq R, Vachée A, Delarbre JM, Maugat S, Robert J. Low carriage of vancomycin-resistant enterococci in the digestive tract of French hospitalised patients: a nationwide prospective study in 2006. J Hosp Infect 2011; 77:179-81. [DOI: 10.1016/j.jhin.2010.10.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2010] [Accepted: 10/05/2010] [Indexed: 11/27/2022]
|