Antimicrobials - principals Flashcards

1
Q

Are antibiotics which inhibit the synthesis of the cell wall bacteriostatic or -cidal?

A

bactericidal

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2
Q

Which cell wall inhibitor is NOT a lactam?

A

vancomycin

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3
Q

What are some common neonatal infections?

A

ecoli, group B strep, listeria

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4
Q

What infection is likely to infect college students?

A

N meningitis

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5
Q

What are two infections that very common in the elderly?

A

listeria

S pneumoniae

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6
Q

If a person has a prosthetic, what are they particularly at risk for?

A

coagulase negative staph

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7
Q

What is the most common antibiotic allergy?

A

B lactam hypersensitivity allergy

-antibiotics are derived from fungus - cause immune system to be hypersensitive!!!

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8
Q

What antibiotic do you need to be extra careful with renal dysfunction?

A

aminoglycosides

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9
Q

How does an obese person affect the efficacy of a drug?

A

increases the volume of distribution

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10
Q

Enterococcus are intrinsically resistant to ____

pseudomonas are intrinsically resistant to _____

A
  1. cephalosporins

2. vancomycin

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11
Q

What method microbes are notorious for B lactamase production?

A

enterobacteriacae , particularly enterobacter

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12
Q

What is the notorious method of pseudomonas resistance?

A

porin channel mutation

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13
Q

What are the four factors of pharmacokinetics?

A
  1. absorption
  2. distribution
  3. metabolism
  4. elimination
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14
Q

Who has a thicker cell wall gram positive or gram negative?

A

gram positive

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15
Q

Tell me about the cell wall of gram positives?

A

alternating NAG and NAM connected by B1-4 linkages

-side chains attached to NAM

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16
Q

Where are B lactamases located in

  1. gram positive
  2. gram negative
A
  1. gram pos –> outside the cell

2. periplasmic space

17
Q

Which bacteria have porins gram pos or gram negative?

A

gram negative

18
Q

Which bacteria have a cell membrane? Why is this of concern?

A

gram negative

-LPS - a component is an endotoxin