نتایج جستجو برای: xpert mtbrif assay
تعداد نتایج: 222590 فیلتر نتایج به سال:
Detection of methicillin (meticillin)-resistant Staphylococcus aureus colonization was assessed using combined nose and groin swabs in two commercial PCR assays (the Xpert MRSA assay and the BD GeneOhm MRSA assay). Compared to routine culture, both had similar sensitivities (87.0% versus 84.8%, respectively) and specificities (93.8% versus 92.7%, respectively). Combined PCR assays provide a rap...
650 October 2014, Vol. 104, No. 10 Use of the Xpert MTB/RIF assay in the diagnosis of tuberculous meningitis: A cautionary note To the Editor: The Xpert MTB/RIF (Cepheid) assay is a nucleic acid amplification test developed to detect mycobacterial tuberc ulosis (MTB) infection and rifampicin resistance. It is a closed system, requires minimal training to use, and produces a result in a few hou...
ObjectiveTo evaluate he diagnostic performance of the Xpert Mycobacterium tuberculosis/Rifampin (MTB/RIF) assay in bronchoalveolar lavage fluid (BALF).MethodsWe retrospectively reviewed clinical data from 671 sputum-smear negative or sputum-scarce adult patients with suspected pulmonary tuberculosis (PTB) who had an MTB/RIF performed on BALF. The assay, smear microscopy (SM) and MTB culture was...
The Cepheid Xpert MRSA/SA nasal PCR assay was compared to culture for quantifying Staphylococcus aureus load from 104 nasal samples (r = 0.91, P < 0.0001). Using a bacterial load-based algorithm, the test was found able to predict the carrier state in 32 of 35 healthy volunteers (22 persistent and 13 nonpersistent carriers).
We performed a retrospective (n = 121) and prospective (n = 305) verification of the Cepheid Xpert Flu assay to determine its performance characteristics. The overall sensitivity and specificity were 93% and 100%, respectively. Nasopharyngeal specimen sensitivities were 100% for seasonal influenza A/H1 virus and influenza A/H3 virus, 90% for influenza A/2009/H1N1 virus, and 95% for influenza B ...
BACKGROUND This study aimed to evaluate the usefulness of the Xpert MTB/RIF assay for the rapid direct detection of M. tuberculosis complex (MTBC) strains and rifampicin resistance associated mutations in a resource-limited setting such as Guinea-Bissau and its implications in the management of tuberculosis (TB) and drug resistant tuberculosis, complementing the scarce information on resistance...
INTRODUCTION Diarrheal disease due to toxigenic Clostridium difficile (CD) accounts for an increased number of hospitalizations and deaths each year. Published guidelines recommend reflex testing of CD antigen-positive samples to molecular testing or testing samples directly by a molecular assay. This multicenter study was designed to compare the accuracy of two different molecular methods targ...
Detecting colonization of patients with carbapenemase-producing bacteria can be difficult. This study compared the sensitivity and specificity of a PCR-based method (Xpert MDRO) for detecting blaKPC, blaNDM, and blaVIM carbapenem resistance genes using GeneXpert cartridges to the results of culture with and without a broth enrichment step on 328 rectal, perirectal, and stool samples. The cultur...
BACKGROUND The relatively simple and cheaper light-emitting diode fluorescent microscopy (LED-FM) was recommended by the World Health Organization (WHO) to replace the conventional tuberculosis (TB) microscopy in both high- and low-volume laboratories. More recently the WHO also endorsed one more technique, Xpert MTB/RIF® assay (Xpert), for improved TB diagnosis particularly among human immunod...
Despite the recent progress toward meeting the Millennium Development Goal target to halt and to reverse the tuberculosis epidemic by 2015, the global burden of tuberculosis remains significant. In 2012, there were an estimated 8.6 million new cases of tuberculosis and 1.3 million died from the disease—5 deaths every 2 minutes! Among these deaths, an estimated 170 000 were caused by multidrug-r...
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