antibiotic therapy 2 Flashcards

1
Q

why are most protein synthesis inhibitors bacteriostatic

A

as protein syntheiss can usually resume when antibiotic is removed

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2
Q

exception of protein synthesis inhibitors which are bactericidal

A

aminoglycosides

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3
Q

protein synthesis inhibitors

A

aminoglycosides
tetracyclines
macrolides

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4
Q

example of aminoglycoside

A

gentamicin

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5
Q

example of macrolide

A

erythromycin

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6
Q

how must gentamicin be given

A

iv as not absorbed from gut

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7
Q

which ribosomes do aminoglycosides bind to

A

30s ribosome inhibitng protein syntheiss

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8
Q

wwhat damage can aminoglycosides do

A

damage to kidneys and 8th cranial nerve

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9
Q

are tetracyclines cidal static

A

static

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10
Q

What do tetracycline sbind to

A

30s subunit and prevent attachment of trna to acceptor sites

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11
Q

are macrolides bacteriostatic or cidal

A

static

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12
Q

what do macrolides bind to

A

50s subunit binding and block translocation no release of peptide

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13
Q

what are erythromycin and clarithyromycin active agaisnt

A

gram negativewh

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14
Q

what is azithyromycin activce agaisnt

A

gram positive

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15
Q

antibiiotics which target nucelic acids

A

fluoroquinolones
metronidazole
trimethoprim
rifampicin
rifampin

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16
Q

what is metronidazole active agaisnt

A

anaerobes and protozoa

17
Q

what are flouroquinolones active against

A

gram neg and pos

18
Q

are quinolones cidal or static

A

cidal

19
Q

what is ciprofloxacin active agaisnt

A

mostly gram neg
. E. coli, H. influenza, Pseudomonas, Moraxella, Legionella

20
Q

metallic taste, furred tongue

A

metronidazole

21
Q

action of metronidazole

A

forms toxic intermediate which breaks dna strands

22
Q

presumptive diagnosis

A

prescribing antibiotics without lab identification

23
Q

targeted prescribing

A

lab investigation made

24
Q

what to avoid in pregnancy/ breats feeding women

A

ciprofloxacin

25
Q

4cs

A

Cephalosporins
Co-amoxiclav
Ciprofloxacin
Clindamycin

26
Q
A