(M) Lec 6.1: Bacterial Identification Flashcards
What are the different multitest systems?
- bioMerieux’s API systems
- BD BBL
- Remel’s RapID
+Biomic V3
This type of multitest system is usually used to identify gram negative and gram positive organisms.
bioMerieux’s API systems
Give the type of API system according to the time and organism given.
- Organism/s Identified: Enterobacteriaceae and other non-fastidious gram negative organisms
- Duration/Time: 18 to 24 hours
API 20E
Give the type of API system according to the time and organism given.
- Organism/s Identified: Entereobacteriaceae
- Duration/Time: 4 hours
API Rapid 20E
Give the type of API system according to the time and organism given.
- Organism/s Identified: Gram negative non-Enterobacteriaceae
- Duration/Time: 24 to 48 hours
Let me know if I can make this easier (kasi I don’t wanna put stuff here na di ko sure) pero if tama pagkakaintindi ko, it’s every other gram negative organism na hindi Enterobacteriaceae? Hehe, let me know if same tayo ng understanding mwa.
API 20NE
Give the type of API system according to the time and organism given.
- Organism/s Identified: Neisseria, Haemophilus, Branhamella catarrhalis
- Duration/Time: 2 hours
API NH
What type of API systems are used for gram negative organisms?
- API 20E
- API Rapid 20E
- API 20NE
- API NH
Give the type of API system according to the time and organism given.
- Organism/s Identified: Clinical Staphylococci and Micrococci
Hehe, walang time e.
API Staph
Give the type of API system according to the time and organism given.
- Organism/s Identified: Commonly occurring Staphylococci
- Duration/Time: 2 hours
RAPIDEC
Give the type of API system according to the time and organism given.
- Organism/s Identified: Streptococci and Enterococci
- Duration/Time: 4 hours OR 24 hours
API 20 Strep
Give the type of API system according to the time and organism given.
- Organism/s Identified: Corynebacteria and similar organisms
- Duration/Time: 24 hours
API Coryne
Give the type of API system according to the time and organism given.
- Organism/s Identified: Anaerobes
- Duration/Time: 24 hours
API 20A
Give the type of API system according to the time and organism given.
- Organism/s Identified: Anaerobes
- Duration/Time: 4 hours
RAPID ID 32A
Give the type of API system according to the time and organism given.
- Organism/s Identified: Yeast
- Duration/Time: 48 to 72 hours
API 20C AUX
Which API systems are used for gram positive organisms?
- API Staph
- RAPIDEC
- API 20 Strep
- API Coryne
- API 20A
- Rapid ID 32A
- API 20C AUX
These contain 15 standard biochemical tests in a compartmented tube to simultaneously inoculate 12 test media.
Agar substrate (tube) + long tube + system
BD BBL Enterotube II
This BD BBL system is used for the rapid identification of gram negative oxidative and fermentative bacilli
BD BBL Oxi/Ferm Tube II
This type of BD BBL can identify almost 500 organisms
BBL Crystal System
In this type of multitest system, there are panels for gram negative bacilli, enterics, and non-fermenters and for gram-positive aerobic organisms.
BD BBL
What are the different kinds of Remel’s RapID?
- RapID One
- RapID NF Plus
- RapID CB Plus
- RapID NH
- RapID Staph Plus
- RapID STR System
- RapID Yeast Plus
Identify the RapID system based on the given information.
- Has 19 substrates to identify
- > 70 oxidase negative, gram negative bacilli (Enterobacteriaceae)
RapID One
Identify the RapID system based on the given information.
- Oxidase positive enteric organisms
- Non-fermenting gram negative bacilli
Rapid NF Plus
Identify the RapID system based on the given information.
- Corynebacterium
- Other gram positive Coryneform bacilli
RapID CB Plus
Identify the RapID system based on the given information.
- Neisseria
- Moraxella
- Haemophilus and similar organisms
RapID NH
Identify the RapID system based on the given information.
- 4 hour identification for yeast
RapID Yeast Plus
Identify the RapID system based on the given information.
- Identification of 4 Staphylococci and related genera
RapID Staph Plus
Identify the RapID system based on the given information.
- Identifies B hemolytic Streptococci and viridans Streptococci
RapID STR System
It is a semiautomated procedure which involves inoculation, interpretation and reporting of results.
Biomic V3
What are the three procedures involved in Biomic V3?
- Inoculation
- Interpretation
- Reporting of Results
A system that involves color digital imaging
Biomic V3
It is an open system that provides an instant digital record of all results and high-resolution images.
Biomic V3
This semiautomated procedure can be interfaced with the lab information system.
Biomic V3
What are the principles involved in the automated identification system?
- Colorimetry
- Nephelometry
- Fluorometry
It is a color change in the pH indicator or other indicator as an organism metabolizes a particular substrate.
Spectrophotometry (Colorimetry)
- Light scattering - photometers + angles to the turbid suspension
- Absorbance
Nephelometry
Uses biochemical substrated that have a fluoroscent component
Fluoroscence
It utilizes fluoroscence and detects change in pH.
Fluorometry
- Utilizes the principle of colorimetry
- Uses 96 well microtiter trays of which 32 substrates can be used to identify Enterobacteriaceae
MicroScan System (Siemens Medical Solutions Diagnostics [FKA] Dade Behring)
- Uses gram positive panels, urinary tract panel, gram negative panels and anti-microbial susceptibility testing
MicroScan System (Siemens Medical Solutions Diagnostics [FKA] Dade Behring)
- Microtubes (D/F) + heavy suspension (15 to 18 hours at 35C)
- The biochemical result is a 7 or 8 digit code number
- Utilizes an automated tray
MicroScan System (Siemens Medical Solutions Diagnostics [FKA] Dade Behring)
This piece of equipment in the MicroScan System detects bacterial growth or color changes as noted by changes in light transmission.
Automated Tray
What is the principle used in BD Phoenix Automated Microbiology System?
Nephelometry
- Fully automated with AST
- Uses disposable panels and is meant to be read every 20 minutes
- Detects gram negative bacilli
- You may be able to identify the organism within 2 to 12 hours (though there are many available in 4 hours)
- Has 45 biochemical reactions (fluorogenic, fermentative, chromogenic, and carbon source substrates)
BD Phoenix Automated Microbiology System
Identifies most clinically significant bacteria and yeast and performs both quantitative and qualitative AST
VITEK System
What are the six reagent cards for the VITEK System?
- GN Card
- GP Card
- BCL Card
- YST Card
- NH Card
- ANC Card
Identify the reagent card.
Gram negative fermenting and non-fermenting bacilli
GN Card
Identify the reagent card.
Gram positive cocci and non-spore forming bacilli
GP Card
Identify the reagent cards.
Gram positive spore-forming bacilli
BCL Card
Identify the reagent card.
Yeast
YST Card
Identify the reagent card.
Neisseria, Haemophilus and other fastidious gram negative bacteria
NH Card
Identify the reagent card.
Anaerobic bacteria
ANC Card
- Has 64 wells each containing an individual test substrate
- Incubated at 35 C and monitors each card optically collection
- AST both gram positive and negative organisms
VITEK System
What does the VITEK System check or identify?
- Changes in the absorbance
- Changes in the turbidity
- Color changes as pH changes
T or F: The test reactions for VITEK is read every 30 minutes.
F
15 minutes
T or F: Increased turbidity indicates susceptibility.
F
Resistance, not susceptibility
MICs is based on what two factors?
- Growth curve
- Slope of the curve
What principles does MicroScan Walk Away (Siemens) utilize?
Colorimetric and Fluorometric
T or F: The MicroScan Walk Away System is a semiautomated computer-controlled system.
F
Fully automated (kaya nga walk away e)
- Has a 40 or 96 panel capacity model
- Can identify organisms in either two hours or 4 hours
- Can take 4 to 7 hours for AST
MicroScan Walk Away (Siemens)
What is the timeframe used in MicroScan Walk Away when the results given are converted to 15 digit codes?
2-Hour Identification (+ Fluoroscent Label)
What do we call the 4-hour identification of MicroScan Walk Away (Siemens)?
Rapid Colorimetric System
How many hours does it take the MicroScan Walk Away to perform AST?
4 to 7 hours
This measures the degree of fluorescence.
Fluorometer
What tool does the AST for MicroScan Walk Away (Siemens) use?
Colorimetric-Spectrophotometer
Less fluorescence = ?
Susceptibility
More fluorescence = ?
Resistant
If you see this card
Wala edi may mata ka, congrats hehe.