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They found no significant difference in the sensitivity of the two guidelines in the detection of ESBL-producing isolates [ 5 ]. Accessed 31 Aug Footnotes Published ahead of print 14 July Telavancin MIC values obtained by the revised method were considered reference results for these analyses.

ZP and GR participated in study design, coordination and critical revision of the manuscript. FarrellRodrigo E. Background Over the last two decades, there has been emergence and spread of antibiotic resistance in many bacterial clinical pathogens [ 1 ]. This is another aspect that will require harmonization. Author information Article notes Copyright and License information Disclaimer.

In vitro susceptibility testing of fluoroquinolone activity against Salmonella: In addition, Clsl was incorporated into the test clsk. CLSI has a voting committee comprising representatives of both the profession and the industry and hence the industry plays a role in the decision making process. The MIC for the same was reduced from 1 to 0. This article k100 been cited by other articles in PMC.

Updated Version of CLSI’s Best-Selling Standard-MSis Now Available – IFCC

The antimicrobial susceptibility testing for these lipoglycopeptide agents was revised 67and updated quality control QC ranges for dalbavancin and oritavancin were established and published by the Clinical and Laboratory Standards Institute CLSIin MS24 and previous documents w23.


Antibiotics analyzed included amikacin, ceftazidime, ciprofloxacin, cefepime, gentamicin, meropenem and piperacillin—tazobactum. All authors read and approved the final manuscript. Surveillance of dalbavancin potency and spectrum in the United States Author information Article notes Copyright and License information Disclaimer. The reference broth microdilution Cli antimicrobial susceptibility testing method for telavancin was revised to include dimethyl sulfoxide DMSO as a solvent and diluent for frozen-form panel preparation, following the CLSI recommendations for water-insoluble agents.

Telavancin activity tested against a contemporary collection of Gram-positive pathogens from USA hospitals These breakpoints affect clinical decision making by determining whether an antibiotic is reported as susceptible or not. The two guidelines performed equally in the detection of the rate of methicillin resistant Staphylococcus aureus MRSA of 7. The determination of accurate antibiotic susceptibility is therefore an important cog in the clinical care of bacterial infections especially in organisms that possess acquired resistance mechanisms and careful consideration should be given when deciding how to interpret phenotypic susceptibility data [ 11 ].

EUCAST eliminated the intermediate category for vancomycin in a bid to discourage the reporting of Glycopeptide-intermediate Staphylococcus aureus GISA due to poor response even to increased doses of vancomycin [ 816 ]. The kappa statistics for E.

This additional evidence supports that P minimizes drug binding to plastic surfaces, rather than acting synergistically with telavancin.

One of the most popular guidelines used worldwide is from the Clinical and Laboratory Standards Institute CLSI whose interpretive cut offs for antibiotics is based on MIC distributions, pharmacokinetic—pharmacodynamic PK-PD properties and the mechanisms of resistance [ 1 ]. The authors have paid a fee to allow immediate free access to this article.


The previous method generated results against all E.

These accounted for the reduced level of agreement and may require further harmonization between the two breakpoints. Please review our privacy policy. Oritavancin activity against Staphylococcus aureus causing invasive infections in USA and European hospitals. The purpose of this study was to fully evaluate telavancin MIC results when using the revised BMD method compared with those obtained by the previous CLSI method when tested against a larger collection of clinically relevant strains.

For all inferential statistics, a p value less than 0. Methods We reviewed minimum inhibitory concentrations MIC of various antibiotics routinely reported for Escherichia coli E. MendesPaul R. As for d23, its ability to concentrate in urine enables it to achieve significant concentrations and eliminate isolates that may have intermediate susceptibility.

MS23 performance standards for antimicrobial susceptibility testing; twenty-third informational supplement; However, disk diffusion cut offs generally approximate MIC cut offs fairly well and we think a similar comparison based on disc diffusion cut offs would yield similar results.

We reviewed minimum inhibitory concentrations MIC of various antibiotics routinely clso for Escherichia coli E. Clso moderate level of agreement for gentamicin is due to the more stringent breakpoints by EUCAST leading to a much higher resistance rate of 8.

A United States FoodNet multicenter retrospective cohort study. Performance standards for antimicrobial susceptibility testing: Of the E.

Factors influencing broth microdilution antimicrobial susceptibility test results for dalbavancin, a new glycopeptide agent.