Rectal colonization with vancomycin- resistant enterococci among high-risk patients in an Israeli hospital

1999 ◽  
Vol 43 (3) ◽  
pp. 231-238 ◽  
Author(s):  
M. Dan ◽  
F. Poch ◽  
L. Leibson ◽  
S. Smetana ◽  
I. Priel
Keyword(s):  
High Risk ◽  
High Risk Patients ◽  
Vancomycin Resistant Enterococci ◽  
Risk Patients ◽  
Vancomycin Resistant ◽  
Rectal Colonization

scholarly journals Risk Factors for New Detection of Vancomycin-Resistant Enterococci in Acute-Care Hospitals That Employ Strict Infection Control Procedures

2003 ◽  
Vol 47 (8) ◽  
pp. 2492-2498 ◽  
Author(s):  
Alexander A. Padiglione ◽  
Rory Wolfe ◽  
Elizabeth A. Grabsch ◽  
Di Olden ◽  
Stephen Pearson ◽  
...  
Keyword(s):  
Risk Factors ◽  
Intensive Care ◽  
High Risk ◽  
Infection Control ◽  
Broad Spectrum ◽  
Rectal Swab ◽  
High Risk Patients ◽  
Vancomycin Resistant Enterococci ◽  
Risk Patients ◽  
Vancomycin Resistant

ABSTRACT Accurate assessment of the risk factors for colonization with vancomycin-resistant enterococci (VRE) among high-risk patients is often confounded by nosocomial VRE transmission. We undertook a 15-month prospective cohort study of adults admitted to high-risk units (hematology, renal, transplant, and intensive care) in three teaching hospitals that used identical strict infection control and isolation procedures for VRE to minimize nosocomial spread. Rectal swab specimens for culture were regularly obtained, and the results were compared with patient demographic factors and antibiotic exposure data. Compliance with screening was defined as “optimal” (100% compliance) or “acceptable” (minor protocol violations were allowed, but a negative rectal swab specimen culture was required within 1 week of becoming colonized with VRE). Colonization with VRE was detected in 1.56% (66 of 4,215) of admissions (0.45% at admission and 0.83% after admission; the acquisition time was uncertain for 0.28%), representing 1.91% of patients. No patients developed infection with VRE. The subsequent rate of new acquisition of VRE was 1.4/1,000 patient days. Renal units had the highest rate (3.23/1,000 patient days; 95% confidence interval [CI], 1.54 to 6.77/1,000 patient days). vanB Enterococcus faecium was the most common species (71%), but other species included vanB Enterococcus faecalis (21%), vanA E. faecium (6%), and vanA E. faecalis (2%). The majority of isolates were nonclonal by pulsed-field gel electrophoresis analysis. Multivariate analysis of risk factors in patients with an acceptable screening suggested that being managed by a renal unit (hazard ratio [HR] compared to the results for patients managed in an intensive care unit, 4.6; 95% CI, 1.2 to 17.0 [P = 0.02]) and recent administration of either ticarcillin-clavulanic acid (HR, 3.6; 95% CI, 1.1 to 11.6 [P = 0.03]) or carbapenems (HR, 2.8; 95% CI, 1.0, 8.0 [P = 0.05]), but not vancomycin or broad-spectrum cephalosporins, were associated with acquisition of VRE. The relatively low rates of colonization with VRE, the polyclonal nature of most isolates, and the possible association with the use of broad-spectrum antibiotics are consistent with either the endogenous emergence of VRE or the amplification of previously undetectable colonization with VRE among high-risk patients managed under conditions in which the risk of nosocomial acquisition was minimized.

scholarly journals Epidemiology and risk factors of rectal colonization of carbapenemase-producing Enterobacteriaceae among high-risk patients from ICU and HSCT wards in a university hospital

2020 ◽  
Author(s):  
Li Yan ◽  
Jide Sun ◽  
Xiuyu Xu ◽  
Shifeng Huang
Keyword(s):  
Risk Factors ◽  
High Risk ◽  
University Hospital ◽  
Health Concern ◽  
Urinary System ◽  
Fecal Samples ◽  
High Risk Patients ◽  
Risk Patients ◽  
Independent Risk Factors ◽  
Rectal Colonization

Abstract Background: Nosocomial infections caused by carbapenemase-producing Enterobacterieceae (CPE) constitute a major global health concern and are associated with increased morbidity and mortality. Rectal colonization with CPE is a risk factor for bacterial translocation leading to subsequent endogenous CPE infections. This prospective observational study was aimed to investigate the prevalence and epidemiology of rectal colonization of CPE, the carbapenemase genotypes, and to identify the independent risk factors for the acquisition of CPE colonization in high-risk patients from ICU and HSCT wards in a university hospital in China. Methods: In a prospective cohort study, 150 fecal samples from rectal swabs were consecutively obtained for inpatients from the ICU and HSCT wards from November 2018 to May 2019, and screening test for CPE was conducted by using home-made trypsin soybean broth (TSB) selective media and MacConkey agar. Antimicrobial susceptibility was determined by the broth microdilution method and carbapenemase genes were characterized by both the GeneXpert Carba-R and PCR for blaKPC, blaNDM, blaIMP, blaVIM and blaOXA. In order to further investigate the risk factors and clinical outcomes of CPE colonization, a prospective case-control study was also performed.Results: 26 suspected CPE strains, including 17 Klebsiella pneumoniae, 6 Escherichia coli, 1 Citrobacter freundii, 1 Enterobacter Kobe, and 1 Raoultella ornithinolytica, were identified in 25 non-duplicated fecal samples from 25 patients, with a carriage rate of 16.67% (25/150). Through GeneXpert Carba-R and subsequent PCR and sequencing, all the suspected CPE isolates were identified to be positive for the carbapenemase genes, of which 17 were blaKPC-carriers, and another 9 were blaNDM-producers. Multivariate analysis indicated that urinary system diseases, operation of bronchoscopy, and combined use of antibiotics were independent risk factors for acquiring CPE colonization in high-risk patients from the ICU and HSCT wards. Conclusions: This study revealed a high prevalence of rectal CPE colonization in high-risk patients from ICU and HSCT wards, and a predominant colonization of the KPC-producing K. pneumoniae strains. Stricter infection control measures are urgently needed to limit the dissemination of CPE strains, especially in patients who were afflicted by urinary system diseases, have underwent bronchoscopy, and were previously exposed to combined antibiotic use.

Absence of Rectal Colonization with Vancomycin-Resistant Enterococci among High-Risk Pediatric Patients

1998 ◽  
Vol 19 (2) ◽  
pp. 109-112 ◽  
Author(s):  
Adnan Trabulsi ◽  
Anne-Marie Glover ◽  
Shirley F. Reising ◽  
Celia D. C. Christie
Keyword(s):  
High Risk ◽  
Pediatric Patients ◽  
Vancomycin Resistant Enterococci ◽  
Vancomycin Resistant ◽  
Rectal Colonization

scholarly journals Epidemiology and risk factors of rectal colonization of carbapenemase-producing Enterobacteriaceae among high-risk patients from ICU and HSCT wards in a university hospital

2020 ◽  
Vol 9 (1) ◽  
Author(s):  
Li Yan ◽  
Jide Sun ◽  
Xiuyu Xu ◽  
Shifeng Huang
Keyword(s):  
Risk Factors ◽  
High Risk ◽  
University Hospital ◽  
Health Concern ◽  
Urinary System ◽  
High Risk Patients ◽  
Broth Microdilution Method ◽  
Risk Patients ◽  
Independent Risk Factors ◽  
Rectal Colonization

Abstract Background Nosocomial carbapenemase-producing Enterobacterieceae (CPE) infections constitute a major global health concern and are associated with increased morbidity and mortality. Rectal colonization with CPE is a risk factor for bacterial translocation leading to subsequent endogenous CPE infections. This prospective observational study was aimed to investigate the prevalence and epidemiology of rectal colonization of CPE, the carbapenemase genotypes, and to identify the independent risk factors for the acquisition of CPE colonization in high-risk patients from ICU and HSCT wards in a university hospital in China. Methods In a prospective cohort study, 150 fecal samples from rectal swabs were consecutively obtained for inpatients from the intensive care unit (ICU) and hematopoietic stem cell transplantation (HSCT) wards from November 2018 to May 2019, and screening test for CPE was conducted by using prepared in-house trypsin soybean broth (TSB) selective media and MacConkey agar. Antimicrobial susceptibility was determined by the broth microdilution method and carbapenemase genes were characterized by both the GeneXpert Carba-R and PCR for blaKPC, blaNDM, blaIMP, blaVIM and blaOXA. Multi-locus sequence typing (MLST) was employed to characterize the genetic relationships among the carbapenemase-producing K. Pneumonia (CPKP) isolates. In order to further investigate the risk factors and clinical outcomes of CPE colonization, a prospective case-control study was also performed. Results Twenty-six suspected CPE strains, including 17 Klebsiella pneumoniae, 6 Escherichia coli, 1 Citrobacter freundii, 1 Enterobacter Kobe, and 1 Raoultella ornithinolytica, were identified in 25 non-duplicated rectal swab samples from 25 patients, with a carriage rate of 16.67% (25/150). Through GeneXpert Carba-R and subsequent PCR and sequencing, all the suspected CPE isolates were identified to be positive for the carbapenemase genes, of which 17 were blaKPC-carriers, and another 9 were blaNDM-producers. MLST designated all the CPKP isolates to be ST11 clone. Multivariate analysis indicated that urinary system diseases, operation of bronchoscopy, and combined use of antibiotics were independent risk factors for acquiring CPE colonization in high-risk patients from the ICU and HSCT wards. Conclusions This study revealed a high prevalence of rectal CPE colonization in high-risk patients from ICU and HSCT wards, and a predominant colonization of the KPC-producing K. pneumoniae clone ST11. Stricter infection control measures are urgently needed to limit the dissemination of CPE strains, especially in patients who were afflicted by urinary system diseases, have underwent bronchoscopy, and were previously exposed to combined antibiotic use.

Absence of Rectal Colonization with Vancomycin-Resistant Enterococci among High-Risk Pediatric Patients

1998 ◽  
Vol 19 (2) ◽  
pp. 109-112 ◽  
Author(s):  
Adnan Trabulsi ◽  
Anne-Marie Glover ◽  
Shirley F. Reising ◽  
Celia D. C. Christie
Keyword(s):  
High Risk ◽  
Pediatric Patients ◽  
Vancomycin Resistant Enterococci ◽  
Vancomycin Resistant ◽  
Rectal Colonization

scholarly journals Single-Dose Oral Amoxicillin or Linezolid for Prophylaxis of Experimental Endocarditis Due to Vancomycin-Susceptible and Vancomycin-Resistant Enterococcus faecalis

2007 ◽  
Vol 51 (5) ◽  
pp. 1661-1665 ◽  
Author(s):  
Philippe Moreillon ◽  
Walter R. Wilson ◽  
Roland Leclercq ◽  
José M. Entenza
Keyword(s):  
Single Dose ◽  
High Risk ◽  
Enterococcus Faecalis ◽  
Resistant Isolate ◽  
Moderate Risk ◽  
High Risk Patients ◽  
Oral Amoxicillin ◽  
Dose Oral ◽  
Risk Patients ◽  
Vancomycin Resistant

ABSTRACT Endocarditis prophylaxis following genitourinary or gastrointestinal procedures targets Enterococcus faecalis. Prophylaxis recommendations advocate oral amoxicillin (2 g in the United States and 3 g in the United Kingdom) in moderate-risk patients and intravenous amoxicillin (2 g) or vancomycin (1 g) plus gentamicin in high-risk patients. While ampicillin-resistant (or amoxicillin-resistant) E. faecalis is still rare, there is a concern that these regimens might fail against vancomycin-resistant and/or aminoglycoside-resistant isolates. The present study tested oral linezolid as an alternative. Rats with catheter-induced aortic vegetations were given prophylaxis simulating human pharmacokinetics of oral amoxicillin (2- to 3-g single dose), oral linezolid (600 mg, single or multiple oral doses every 12 h), or intravenous vancomycin (1-g single dose). Rats were then inoculated with the minimum inoculum infecting 90% of the animals (90% infective dose [ID90]) or with 10 times the ID90 of the vancomycin-susceptible E. faecalis strain JH2-2 or the vancomycin-resistant (VanA phenotype) E. faecalis strain UCN41. Amoxicillin was also tested with two additional vancomycin-susceptible E. faecalis strains, 309 and 1209. Animals were sacrificed 3 days later. All the tested bacteria were susceptible to amoxicillin and gentamicin. Single-dose amoxicillin provided 100% protection against all four isolates at both the ID90 and 10 times the ID90. In contrast, linezolid required up to four consecutive doses to provide full protection against the vancomycin-resistant isolate. Vancomycin protected only against the vancomycin-susceptible strain. The high efficacy of single-dose oral amoxicillin suggests that this regimen could be used for prophylaxis in both moderate-risk and high-risk patients without additional aminoglycosides. Linezolid appears to be less reliable, at least against the vancomycin-resistant strain.

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