Intro to Antimicrobial Flashcards

1
Q

Antibiotic

A

Molecular subtance produced by a microoganism to kill other organisms

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2
Q

Antimicrobial

A

Any substance natural or synthetic to kill microogranisms

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3
Q

Are all antibiotics antimoicrobials?

A

Yes

but the reverse is not true

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4
Q

Bacterostatic

A

Manages to keep the bacteria stationatry, wont reporduce

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5
Q

Bacterocidal

A

kills the bacteria

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6
Q

The disc diffusion test determines what?

A

The minimal inhibitory concentration (MIC)

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7
Q

The Broth Dilution test determines what?

A

minimal inhibitory concentration (MIC)

minimum bactericidal concentration (MBC/ kill rate)

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8
Q

What phase is the most sensitive to antimicrobial intervention?

A

The Log Phase

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9
Q

What is Empiric antimicrobial treatment?

A

Treatment based off of symptoms

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10
Q

what is definitive antimicrobial treatment?

A

When a test ha been preformed so that the proper drug is admistered

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11
Q

Pharmacokinetics

A

What the body does to the drug

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12
Q

Pharmacodynamics

A

What the drug does to the body

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13
Q

what are the 3 types of antimicrobial effects

A

Type I / concentration
Type II / Time
Type III / Time… w/ effects

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14
Q

What makes a “safer” antibiotic?

A

the higher/wider the therapeutic index

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15
Q

What are the 4 main targets for antimicrobial inhibition?

A

Cell wall synthesis
Protein Synthesis
Inhibition of metabolism
Nucleic acid synthesis

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16
Q

Why would you use combination therapy? (4)

A

Treat mixed infections
Not sure what it is
Improve efficacy
Prevent resistance

17
Q

How do superinfections occur?

A

You kill off good bacteria and bad bacteria go on a growin frenzy

18
Q

What are the 3 reasons why bacteria mutate?

A

Chance
Horizontal gene transfer
Pressure (antimicrobial)

19
Q

What are 3 ways of Horizontal gene transfer

A

Conjugation
Transformation
Transduction

20
Q

What pushes out antimicrobials?

A

Efflux Pumps

21
Q

How do bacteria prevent penacillin from working?

A

By breaking the B-lacate ring