1) Determine the MICS on the simulated microbroth-dilution results from an MIC Assay on Staphylococcus aureus.

Human Anatomy & Physiology (11th Edition)
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1) Determine the MICS on the simulated microbroth-dilution results from an MIC Assay on
Staphylococcus aureus.
Legends:
PC: Positive Control (No antimicrobial agent)
NC: Negative Control (No bacteria)
No Growth
With Growth
µg/mL: 128
64
32
16
8 4 2 1 0.5 0.25
PC
NC
2
3
4
5
7
8
9
10
11
12
Amoxicillin A
Ticarcillin
Piperacillin C
D
Cefotaxime
E
Ertapenem
F
Nalidixic Acid
G
Ciprofloxacin
H
Gentamicin
а.
Fill out the MICS on the table below.
MIC
Susceptibility to Staphylococcus aureus
Antimicrobial Agent
(Hg/mL)
(Susceptible, Intermediate, or Resistant)
Amoxicillin
Ticarcillin
Piperacillin
Cefotaxime
Ertapenem
Nalidixic Acid
Ciprofloxacin
Gentamicin
B
Transcribed Image Text:1) Determine the MICS on the simulated microbroth-dilution results from an MIC Assay on Staphylococcus aureus. Legends: PC: Positive Control (No antimicrobial agent) NC: Negative Control (No bacteria) No Growth With Growth µg/mL: 128 64 32 16 8 4 2 1 0.5 0.25 PC NC 2 3 4 5 7 8 9 10 11 12 Amoxicillin A Ticarcillin Piperacillin C D Cefotaxime E Ertapenem F Nalidixic Acid G Ciprofloxacin H Gentamicin а. Fill out the MICS on the table below. MIC Susceptibility to Staphylococcus aureus Antimicrobial Agent (Hg/mL) (Susceptible, Intermediate, or Resistant) Amoxicillin Ticarcillin Piperacillin Cefotaxime Ertapenem Nalidixic Acid Ciprofloxacin Gentamicin B
b. Compare the MIC above with the MIC Breakpoints on the Sample Standards below and
fill out the Susceptibility Result column on the table above.
Sample Performance Standards for Antimicrobial Susceptibility Testing
MIC Breakpoint (ug/mL)
Antimicrobial Agent
Test Range (ug/mL)
Susceptible
Intermediate
Resistant
Amoxicillin
0.25-128
34
8.
>8
Ticarcillin
0.25-128
<8
16
>16
Piperacillin
0.25-128
<8
16
>16
Cefotaxime
0.25-128
<1
2
>2
Ertapenem
0.25-128
30.5
>1
Nalidixic Acid
0.25-128
<8
16
>16
Ciprofloxacin
0.25-128
<0.5
1
>1
Gentamicin
0.25-128
<2
4
>4
Note: For actual MIC Assay, refer to the current Clinical and Laboratory Standards Institute (CLSI)
Performance Standards for Antimicrobial Susceptibility Testing available to paid subscribers.
Transcribed Image Text:b. Compare the MIC above with the MIC Breakpoints on the Sample Standards below and fill out the Susceptibility Result column on the table above. Sample Performance Standards for Antimicrobial Susceptibility Testing MIC Breakpoint (ug/mL) Antimicrobial Agent Test Range (ug/mL) Susceptible Intermediate Resistant Amoxicillin 0.25-128 34 8. >8 Ticarcillin 0.25-128 <8 16 >16 Piperacillin 0.25-128 <8 16 >16 Cefotaxime 0.25-128 <1 2 >2 Ertapenem 0.25-128 30.5 >1 Nalidixic Acid 0.25-128 <8 16 >16 Ciprofloxacin 0.25-128 <0.5 1 >1 Gentamicin 0.25-128 <2 4 >4 Note: For actual MIC Assay, refer to the current Clinical and Laboratory Standards Institute (CLSI) Performance Standards for Antimicrobial Susceptibility Testing available to paid subscribers.
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