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Statistical power for primary endpoint (sensitivity) for E. coli and K. pneumoniae and ceftriaxone was achieved
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The aim of this study is to assess the sensitivity, specificity, and accuracy of the Resistell Phenotech device in testing antibiotic susceptibility of Gram-negative bacteria (i.e., E. coli or K. pneumoniae) to clinically relevant antibiotics. The study is designed as a prospective, non-interventional, multi-center, single-arm study.
The blood culture samples from bacteremia patients that are positive for E. coli or K. pneumoniae will be tested with the Resistell Phenotech device after strain identification by MALDI-TOF. The results of the Resistell AST will be compared with the results from the disk diffusion tests (all sites use the Kirby-Bauer disk diffusion test), and site dependent tests (VITEK® 2, BD Phoenix™, MicroScan WalkAway system, and/or EUCAST RAST), which are currently the standard AST methods in the microbiology laboratories at the participating sites.
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Resistell Phenotech | Diagnostic Test | Resistell Phenotech IVD device used to assess susceptibility of Gram negative bacteria to antibiotics. |
| Measure | Description | Time Frame |
|---|---|---|
| Sensitivity of the Resistell Phenotech vs Kirby-Bauer | To assess the sensitivity of the Resistell Phenotech in detecting antibiotic susceptible bacteria in blood samples positive for E. coli or K. pneumoniae, compared to the gold standard Kirby-Bauer disk diffusion test. | 18 months |
| Measure | Description | Time Frame |
|---|---|---|
| Specificity and accuracy of the Resistell Phenotech vs Kirby-Bauer | To assess the specificity and accuracy of the Resistell Phenotech in detecting antibiotic susceptible bacteria in blood samples positive for E. coli or K. pneumoniae, compared to the gold standard Kirby-Bauer disk diffusion test. | 18 months |
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Inclusion Criteria:
Exclusion Criteria:
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Patients with bacteremia considered to be due to E. coli or K. pneumoniae.
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Medizinische Universität Innsbruck (MUI), Institut für Hygiene und Medizinische Mikrobiologie | Innsbruck | Innsbruck | 6020 | Austria | ||
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| ID | Term |
|---|---|
| D004198 | Disease Susceptibility |
| D004927 | Escherichia coli Infections |
| ID | Term |
|---|---|
| D020969 | Disease Attributes |
| D010335 | Pathologic Processes |
| D013568 | Pathological Conditions, Signs and Symptoms |
| D004756 | Enterobacteriaceae Infections |
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Bacteria extracted from blood and tested with the investigational device.
| Sensitivity, specificity, and accuracy of the Resistell Phenotech vs other comparators |
To assess the sensitivity, specificity, and accuracy of the Resistell Phenotech in detecting antibiotic susceptible bacteria in blood samples positive for E. coli or K. pneumoniae, compared to other routine diagnostic AST tests run at each site |
| 18 months |
| Time to result of Resistell Phenotech vs Kirby-Bauer and other comparators | To assess the difference between time to result (TTR) of Resistell Phenotech and the TTR of the Kirby-Bauer and the other routine diagnostic AST methods run at each site. | 18 months |
| Category agreement and discrepancies | To assess category agreement (CA), very major discrepancy (VMD), major discrepancy (MD) of the results obtained with Resistell Phenotech compared to the Kirby-Bauer and the other routine diagnostic AST test results at each site | 18 months |
| Hospital Universitario Ramón y Cajal, Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS) |
| Madrid |
| Madrid |
| 28034 |
| Spain |
| Centre hospitalier universitaire vaudois (CHUV), Institut de Microbiologie | Lausanne | Lausanne | 1011 | Switzerland |
| D016905 | Gram-Negative Bacterial Infections |
| D001424 | Bacterial Infections |
| D001423 | Bacterial Infections and Mycoses |
| D007239 | Infections |