Antimicrobial Susceptibility Testing and Rapid Diagnostics Practice Test

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• What is the purpose of disk diffusion quality-control strains in testing?
• What is a time-kill curve, and is it used routinely in clinical laboratories?
• How is MRSA detected phenotypically and/or genotypically in AST workflows?
• Why is antimicrobial stewardship essential when implementing rapid diagnostic tests?
• Which technology underpins the ME panel results?
• Who publishes interpretive breakpoints used in AST and how often are they updated?
• Which rapid diagnostic technology is most clinicians familiar with?
• Who gets the final call on breakpoints?
• Which element is typically included in a standard antimicrobial susceptibility testing report?
• Multiplex PCR can be used on which sample types?
• Which statement best describes the antimicrobial stewardship program?
• In disk diffusion, what is the effect of increasing inoculum size on the zone diameter?
• What proportion of the initial inoculum is typically killed to define the MBC?
• C. difficile infection impact on LOS and mortality
• BD's GeneOhm's Cdiff assay B gene results time
• Which option lists two phenotypic tests commonly used to confirm ESBL or AmpC production in Gram-negative rods?
• Which is a disadvantage of automated susceptibility testing systems?
• Which test is commonly used to screen MRSA phenotypically in AST workflows?
• What is the purpose of quality control in AST, and which organisms are standard QC strains?
• What timeframe defines rapid testing in this material?
• Which statement best describes how breakpoints relate to MIC values when assigning susceptibility categories?
• In MRSA detection, what does a positive cefoxitin screen suggest?
• Which statement describes why some MIC methodologies are time-consuming and relegated to reference labs?
• Which of the following is an example of nanoparticle probe technology for Gram-positive blood cultures?
• Which statement best defines a syndromic diagnostic panel in rapid testing?
• When is empiric therapy used with conventional testing?
• GI panel target count
• Rapid identification with pharmacist-driven reporting is associated with which change in antibiotic management?
• Which statement best differentiates disk diffusion from MIC testing?
• What is the impact of time to positivity in blood cultures on the timing of AST results?
• Which AST method is generally less reliable for fastidious organisms unless specialized media or conditions are used?
• What is the inoculum effect and why is it important in AST?
• What is a cumulative antibiogram used for in a clinical setting?
• Nanoparticle probe technology time to results is typically around which duration?
• Which of the following are goals of antimicrobial testing and regimen selection?
• Which statement best describes the time difference between rapid and conventional diagnostic identification?
• MALDI-TOF is a form of what type of analytical technique?
• What is the purpose of a check culture in antimicrobial susceptibility testing?
• What is a key limitation of molecular rapid diagnostics in guiding therapy?
• In the context of improving antimicrobial therapy decisions, which factor is linked to receiving results faster?
• What is the readout of an E-test on agar?
• Define Minor Error in AST method comparison.
• Which statement accurately describes breakpoint interpretation of MIC results?
• What is the purpose of interpretive breakpoints in antimicrobial susceptibility testing?
• Respiratory panel purpose
• In conventional identification, which step is performed first?
• Which statement is NOT a listed benefit of quicker identification?
• Which statement best describes time-kill assays?
• Disk diffusion results are interpreted by comparing observed zone diameters to what?
• Essential agreement between a new method and a reference method means the MICs are within what range?
• FilmArray Multiplex PCR System panels listed
• Which testing method enables testing of multiple targets by amplifying several DNA regions simultaneously?
• What is the relationship between rapid and conventional time?
• Name two rapid diagnostic approaches used for bloodstream infections.
• Before MALDI-TOF mass spectrometry analysis, what is typically required for many organisms?
• If inoculum standardization is not maintained in disk diffusion, what is the likely outcome?
• Which statement correctly contrasts conventional and rapid time frames?
• Which statement correctly differentiates qualitative AST reporting from quantitative MIC reporting?
• Which statement about clavulanic acid is true?
• What is the primary purpose of MIC testing in antimicrobial therapy?
• Which of the following is a benefit of multiplex PCR + pharmacist-driven reporting compared with conventional identification?
• Why can CLSI and EUCAST interpretations differ for the same organism–drug pair?
• What is one effect of rapid diagnostics on the antimicrobial stewardship pharmacist's role?
• Which outcome is associated with reduced use of vancomycin for CoNS contaminants?
• What is generated by MALDI-TOF analysis that helps with identification?
• Which method is typically preferred for obtaining precise MICs for fastidious organisms such as Haemophilus influenzae?
• In MALDI-TOF, what property is measured to identify bacteria or proteins?
• Which statement about MIC is true?
• What distinguishes rapid diagnostic identification from conventional identification in terms of turnaround time?
• BD's GeneOhm's Cdiff assay is designed to do what?
• What is the primary purpose of PCR as described in the material?
• MALDI-TOF MS stands for what?
• Which pharmacodynamic parameter combines drug exposure with MIC to describe activity?
• FilmArray Multiplex PCR System description
• Conventional identification time frame is typically:
• GI panel hands-on time and turnaround
• Which of the following are nanoparticle probe technology assays used for blood cultures?
• Which standard is commonly used to set dose-specific breakpoints and quality-control ranges for many organisms in the United States?
• Respiratory panel includes which pathogens
• Which automated systems are commonly used for MIC testing?
• Disk diffusion results interpretation relies on what to categorize results into susceptible, intermediate, or resistant?
• In both conventional and rapid diagnostic workflows, what is the initial step after a positive blood culture?
• Which technology is often used for rapid species identification by analyzing protein mass spectra?
• What is the effect of rapid identification on time to antibiotic change compared with conventional methods?
• Who has the final call on antimicrobial breakpoints for automated testing cards?
• Which organizations may disagree on breakpoints for antimicrobial susceptibility testing?
• Why should culture results be checked before rounds?
• In rapid identification, the time to obtain results is typically:
• In conventional microorganism identification, which type of methods is used?
• BD GeneOhm Cdiff assay sensitivity and specificity claim
• Which rapid diagnostic approach can identify resistance markers along with organism ID?
• How does specimen type influence the selection and interpretation of rapid diagnostic tests?
• What is the primary clinical aim of the meningitis panel?
• How does MALDI-TOF contribute to rapid identification but not to antimicrobial susceptibility?
• In a conventional workflow, where is susceptibility testing typically performed?
• What is breakpoint drift, and what is its clinical implication?
• Why are incubation conditions (temperature and atmosphere) important in AST?
• What is the role of Gram stain in the diagnostic workflow?
• What is a host-response diagnostic concept in rapid testing?
• What is the turnaround time for the meningitis panel?
• Define Major Error in AST method comparison.
• Which option describes a characteristic of standard PCR steps listed in the material?
• PCR is used to detect which organism in the given context?
• Notes on detected resistance mechanisms in an AST report may include mention of specific mechanisms such as:
• What is synergy testing in AST, and when is it considered?
• What is a general principle when implementing rapid diagnostics in antimicrobial stewardship?
• Rapid diagnostics support antimicrobial stewardship by enabling which actions?
• What is a common limitation of automated systems compared with traditional methods?
• In rapid diagnostic identification, what is the correct sequence after a positive blood culture?
• What is the reported impact of rapid diagnostics on time to pathogen identification?
• Which gene is most commonly associated with MRSA resistance to methicillin?
• How does an E-test determine the MIC?
• What outcome relates to results being acted upon quickly?
• In MALDI-TOF mass spectrometry, what is the first step?
• Which rapid diagnostic technology are most clinical pharmacists familiar with?
• Which statement describes a key limitation of rapid molecular diagnostics in guiding therapy?
• What is the role of breakpoints in antimicrobial susceptibility testing?
• Accelerate PhenoTest uses which technique?
• GI panel feature on FilmArray system
• Rapid diagnostic tests can help achieve antimicrobial stewardship goals by offering which benefits?
• What does 'essential agreement' mean when comparing a new AST method to a reference method?
• How does E-testing determine MIC?
• Formal ID training is associated with what regarding rapid diagnostics?
• Multiplex FISH yields antimicrobial susceptibilities in about how many hours?
• What is the most commonly used rapid diagnostic test?
• Which organism group is specifically mentioned in relation to reduced vancomycin use when rapid diagnostics are used?
• Which of the following is NOT a step in MALDI-TOF mass spectrometry steps?
• Which of the following is NOT a stated benefit of multiplex PCR with pharmacist-driven reporting?
• Which statement about a cumulative antibiogram is correct?
• In nanoparticle probe technology, which step follows PCR amplification?
• What resistance determinants are most commonly screened in enterococci for vancomycin resistance?
• How can specimen contamination affect AST results?
• Receiving results faster requires what key action?
• After Gram staining in the conventional workflow, what is typically the next step?
• Which statement best reflects the concept of rapid diagnostics in antimicrobial stewardship?
• What approach can lead to faster reporting of results without purchasing new instrumentation?
• Which of the following is a key benefit of rapid diagnostic tests?
• In synergy testing, which statement is true?
• How long does MIC testing typically take?
• What is the approximate inoculum used to prepare a 0.5 McFarland standard for broth microdilution?
• What is metagenomic sequencing's role in rapid diagnostics?
• The meningitis panel tests cerebrospinal fluid for how many targets?
• How does AST data support antibiotic de-escalation in stewardship?
• In disk diffusion interpretation, into which categories are zone sizes typically classified?
• What does MIC stand for?
• Which method delivers results in 2 hours or less?
• What is the clinical impact of a false-negative result from a rapid diagnostic test?
• Multiplex PCR description difference
• Define Very Major Error in AST method comparison.
• What is the primary difference between MIC and MBC in antimicrobial susceptibility testing?
• What is the role of quality control (QC) in disk diffusion testing?
• Which action does rapid diagnostics enable regarding antimicrobials?
• When should you obtain a culture in suspected infection?
• Current rapid diagnostic tests include which of the following?
• Is host-response diagnostic testing routinely used in all clinical settings?
• Nanoparticle probe technology typically yields results from which sample type and in approximately how long?
• Which of the following is a commonly cited goal of antimicrobial stewardship?
• Name two QC strains commonly used for disk diffusion quality-control.
• In ESBL phenotypic testing, what arrangement is used to observe synergy with clavulanate?
• Which infection requires fast antibiotic administration with a 45-minute target?
• What is an advantage of automated systems for antimicrobial susceptibility testing?
• When does definitive therapy begin with conventional methods?
• What is the typical turnaround time difference between conventional culture-based AST and rapid diagnostic tests for bloodstream infections?
• Which genotype is used to confirm methicillin resistance in MRSA?
• What pharmacodynamic parameter is most often used to characterize antimicrobial activity?
• If considering eravacycline or imipenem/cilastatin/relebactam, when should you ask for an E-test?
• Which technology yields antimicrobial susceptibilities in about 7 hours?
• PCR steps listed in the material
• Why is AmpC beta-lactamase clinically important for interpretation of cephalosporin susceptibility?
• How are MIC results used to determine categories in antimicrobial susceptibility testing?
• Which MIC methodology is considered the gold standard reference method?
• Which statement best describes the interaction between clavulanic acid and AmpC beta-lactamase?
• An uninterpretable AST result most often indicates a test failure or QC out of range; what should be done next?
• Which test is typically used phenotypically to detect ESBL production in Gram-negative rods?
• Why might a resistance gene be present but not expressed, leading to a susceptible phenotype?
• Which scenario favors broth microdilution over disk diffusion in antimicrobial susceptibility testing?
• What is the first step in nanoparticle probe technology steps?
• In AST terminology, what does QC stand for?