west china medical publishers
Keyword
  • Title
  • Author
  • Keyword
  • Abstract
Advance search
Advance search

Search

find Keyword "超广谱β-内酰胺酶" 3 results
  • Risk Factors and Genotyping of Nosocomial Pneumonia Due to Extended Spectrum β-Lactamase Producing EscherichiaColi and KlebsiellaPneumoniae

    Objective To analyze the current drug resistance and risk factors of hospital acquired pneumonia( HAP) due to extended spectrumβ-lactamase ( ESBLs) producing Escherichia coli and Klebsiella pneumoniae, and to estimate the prevalence trend of ESBLs producing strains. Methods FromApril 2007 to January 2008, 140 patients of Xinhua Hospital with HAP due to E. coli and K. pnermoniae were enrolled.Among them, 88 patients were with ESBLs producing strains and 52 patients were with non-ESBLs producing strains. Risk factors were analyzed by comparing between these patients. The rate of drug resistance was determined by antibiotic sensitive test. Fifty-three ESBLs producing strains were genotyped by random amplified polymorphic DNA ( RAPD) . Results The rate of drug resistance of ESBLs producing strains washigher than that of non-ESBLs producing strains. ICU stay, use of third- and forth-generation cehpalosporin were found to be the independent risk factors by multivariate analysis with logistic regression. By RAPD, 37 ESBLs producing E. coli strains were divided into 27 types and 16 ESBLs producing K. pneumoniae strains were divided into 13 types. Conclusions ICU stay, use of third-generation and forth-generation cehpalosporin remain as major risk factors in the HAP due to ESBLs producing E. coli and K. pneumoniae.RAPD is an economic, quick and credible method for epidemic analysis

    Release date:2016-08-30 11:53 Export PDF Favorites Scan
  • Investigation of Hospital Infection with Bacteria Producing Extended-spectrum β-lactamases in the Department of Neonatology

    ObjectiveTo investigate the situation of hospital infection with bacteria producing extended-spectrum β-lactamases (ESBLs), find the source of infection and analyze its transmission route, and take effective prevention and control measures to reduce the incidence of nosocomial infection. MethodsA hospital neonatal ward had six cases of ESBL-producing bacteria infections on February 16 to 26, 2012. According to the processing procedure for hospital infection outbreak, we carried out epidemiological investigation on the patient with suspected hospital infection, including checking the medical records, asking the doctor in charge about the patients'clinical symptoms, collecting sputum samples of the patients and environmental microbiology examination, etc. ResultsFour cases of infection were community-acquired, and two were nosocomial infection. Infection onsets were concentrated (between February 16 and February 26, 2012). Patients had similar clinical symptoms, including fever, cough, cough sputum, and lung wet rales, which showed a lower respiratory infection. Six strains of ESBL-producing Escherichia coli were isolated from the infected children, and their susceptibility reports were not entirely consistent, indicating that they did not belong to the same species and were not homologous pathogens. Through bedside survey, we also isolated from the environmental samples 6 ESBL-producing bacteria, and these bacteria were acquired from the milk countertops, kettle, ventilator tube, two doctors'nasal cavity, and the cleaners'nasal cavity in corresponding wards of those infected children. ConclusionThe infection does not belong to an outbreak of nosocomial infection, and it is only an aggregation event of ESBL-producing Escherichia coli. The symptoms of infection were mainly because of lower immunity of children themselves, plus not so good aseptic technique and management in the department of neonatology. Therefore, strengthening hand hygiene management of medical staffs, and regular environmental sanitation and disinfection can reduce the incidence of neonatal hospital infection.

    Release date: Export PDF Favorites Scan
  • 双歧杆菌、保加利亚乳杆菌、嗜热链球菌三联活菌去除肠道产超广谱β-内酰胺酶大肠埃希菌的研究

    目的研究双歧杆菌、保加利亚乳杆菌、嗜热链球菌三联活菌对肠道产超广谱β-内酰胺酶(ESBL)大肠埃希菌的除菌作用,为临床辅助治疗大肠埃希菌感染提供依据。 方法对2013年1月-9月5个病区1 358例入院患者采集肛拭子标本进行产ESBL大肠埃希菌定植筛查,选取产ESBL大肠埃希菌阳性患者306例,随机分为试验组与对照组。试验组140例在常规消毒隔离措施基础上口服双歧杆菌、保加利亚乳杆菌、嗜热链球菌三联活菌去除肠道产ESBL大肠埃希菌,对照组166例仅采取常规消毒隔离措施。3~7 d后,两组再次取肛拭子进行筛查。 结果试验组87例未再检出产ESBL大肠埃希菌,双歧杆菌、保加利亚乳杆菌、嗜热链球菌三联活菌去除肠道产ESBL大肠埃希菌有效率为62.14%;对照组125例再次检出产ESBL大肠埃希菌,肠道自行清除率为24.70%,两组差异有统计学意义(χ2=43.761,P<0.001)。 结论双歧杆菌、保加利亚乳杆菌、嗜热链球菌三联活菌具有清除肠道产ESBL大肠埃希菌的作用,清除率与使用时间长短、使用抗菌物有关。

    Release date: Export PDF Favorites Scan
1 pages Previous 1 Next

Format

Content