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bacteriology > intrinsic resistances > Flashcards

intrinsic resistances Flashcards

1
Q

Citrobacter freundii

A

Ampicillin, Amoxicillin-clavulanate, Ampicillin-sulbactam, Cephalosporins I (cefazolin, cephalothin), Cephamycins (cefoxitin, cefotetan), Cephalosporin II (cefuroxime)

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2
Q

Citrobacter koseri and Citrobacter amalonaticus group

A

Ampicillin, Ticarcillin

**Citrobacter amalonaticus group includes C. amalonaticus, C. farmeri, and C. sedlakii

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3
Q

Enterobacter cloacae complex

A

Ampicillin, Amoxicillin-clavulanate, Ampicillin-sulbactam, Cephalosporins I (cefazolin, cephalothin), Cephamycins (cefoxitin, cefotetan)

**E. cloacae complex includes Enterobacter asburiae, Enterobacter cloacae, and Enterobacter hormaechei.

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4
Q

Escherichia coli

A

no intrinsic resistances

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5
Q

Escherichia hermannii

A

Ampicillin, Ticarcillin

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6
Q

Hafnia alvei

A

Ampicillin, Amoxicillin-clavulanate, Ampicillin-sulbactam, Cephalosporins I (cefazolin, cephalothin), Cephamycins (cefoxitin, cefotetan), Polymyxin B, Colistin

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7
Q

Hafnia paralevi

A

Colistin and polymyxin B

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8
Q

Klebsiella aerogenes

A

Ampicillin, Amoxicillin-clavulanate, Ampicillin-sulbactam, Cephalosporins I (cefazolin, cephalothin), Cephamycins (cefoxitin, cefotetan)

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9
Q

Klebsiella pneumoniae

A

Ampicillin, Ticarcillin

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10
Q

Klebsiella oxytoca

A

Ampicillin, Ticarcillin

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11
Q

Klebsiella variicola

A

Ampicillin, Ticarcillin

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12
Q

Morganella morganii

A

Ampicillin, Amoxicillin-clavulanate, Cephalosporins I (cefazolin, cephalothin), Cephalosporin II (cefuroxime), Tigecycline, Nitrofurantoin, Polymyxin B, Colistin

**Proteus spp., Providencia spp., and Morganella spp. may have elevated minimal inhibitory concentrations to imipenem by mechanisms other than by production of carbapenemases. Isolates that test as susceptible should be reported as susceptible.

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13
Q

Proteus mirabilis

A

Tetracyclines, Tigecycline, Nitrofurantoin, Polymyxin B, Colistin

**Proteus spp., Providencia spp., and Morganella spp. may have elevated minimal inhibitory concentrations to imipenem by mechanisms other than by production of carbapenemases. Isolates that test as susceptible should be reported as susceptible.

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14
Q

Proteus penneri

A

Ampicillin, Cephalosporins I (cefazolin, cephalothin), Cephalosporin II (cefuroxime),etracyclines, Tigecycline, Nitrofurantoin, Polymyxin B, Colistin

**Proteus spp., Providencia spp., and Morganella spp. may have elevated minimal inhibitory concentrations to imipenem by mechanisms other than by production of carbapenemases. Isolates that test as susceptible should be reported as susceptible.

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15
Q

Proteus vulgaris

A

Ampicillin, Cephalosporins I (cefazolin, cephalothin), Cephalosporin II (cefuroxime),etracyclines, Tigecycline, Nitrofurantoin, Polymyxin B, Colistin

**Proteus spp., Providencia spp., and Morganella spp. may have elevated minimal inhibitory concentrations to imipenem by mechanisms other than by production of carbapenemases. Isolates that test as susceptible should be reported as susceptible.

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16
Q

Providencia rettgeri

A

Ampicillin, Amoxicillin-clavulanate, Cephalosporins I (cefazolin, cephalothin), tetracyclines, Tigecycline, Nitrofurantoin, Polymyxin B, Colistin

**Proteus spp., Providencia spp., and Morganella spp. may have elevated minimal inhibitory concentrations to imipenem by mechanisms other than by production of carbapenemases. Isolates that test as susceptible should be reported as susceptible.

17
Q

Providencia stuartii

A

Ampicillin, Amoxicillin-clavulanate, Cephalosporins I (cefazolin, cephalothin), tetracyclines, Tigecycline, Nitrofurantoin, Polymyxin B, Colistin

**Proteus spp., Providencia spp., and Morganella spp. may have elevated minimal inhibitory concentrations to imipenem by mechanisms other than by production of carbapenemases. Isolates that test as susceptible should be reported as susceptible.

***P. stuartii should be considered resistant to gentamicin, netilmicin, and tobramycin but not intrinsically resistant to amikacin.

18
Q

Raoultella spp.

A

Ampicillin, Ticarcillin

***Raoultella spp. includes R. ornithinolytica, R. terrigena, and R. planticola.

19
Q

Serratia marcescens

A

Ampicillin, Amoxicillin-clavulanate, Ampicillin-sulbactam, Cephalosporins I (cefazolin, cephalothin), Cephamycins (cefoxitin, cefotetan), Cephalosporin II (cefuroxime), Nitrofurantoin, Polymyxin B, Colistin

**Serratia marcescens may have elevated MICs to tobramycin. Isolates that test susceptible should be reported as susceptible.

20
Q

Acinetobacter baumannii/Acinetobacter calcoaceticus complex

A

Ampicillin, amoxicillin, amoxicillin-clavulanate, aztreonam, ertapenem, trimethoprim, choramphenicol, fosfomycin, cephalosporins I (cephalothin, cefazolin), cephalosporin II (cefuroxime), cephamycins (cefoxitin, cefotetan), macrolides (erythromycin, azithromycin, clarithromycin), quinupristin-dalfopristin, and rifampin.

21
Q

Burkholderia cepacia complex

A

Ampicillin, amoxicillin, piperacillin, Ampicillin-sulbactam, Amoxicillin-clavulanate, ertapenem, polymixin B, colistin, fosfomycin,cephalosporins I (cephalothin, cefazolin), cephalosporin II (cefuroxime), cephamycins (cefoxitin, cefotetan), macrolides (erythromycin, azithromycin, clarithromycin), quinupristin-dalfopristin, and rifampin.

22
Q

Pseudomonas aeruginosa

A

Ampicillin, Amoxicilin, Ampicillin-sulbactam, Ampicillin-clavulanate, cefotaxime, ceftriaxone, ertapenem, tetracycline, tigecycline, trimethoprim, trimethoprim-sulfamethoxazole, chloramphenicol,cephalosporins I (cephalothin, cefazolin), cephalosporin II (cefuroxime), cephamycins (cefoxitin, cefotetan), macrolides (erythromycin, azithromycin, clarithromycin), quinupristin-dalfopristin, and rifampin.

23
Q

Stenotrophomonas maltophilia

A

NOT resistant to: ceftazadime, cefepime, polymyxin B, colistin, trimethoprim-sulfamethoxazole, chloramphenicol

  • S. maltophilia is intrinsically resistant to tetracycline, but not doxycycline, minocycline, tigecycline
24
Q

Staphylococcus saprophyticus

A

novobiocin, fosfomycin, fusidic acid

**These gram-positive bacteria are also intrinsically resistant to aztreonam, polymyxin B/colistin, and nalidixic acid.

25
Q

Staphylococcus capitis

A

fosfomycin

**These gram-positive bacteria are also intrinsically resistant to aztreonam, polymyxin B/colistin, and nalidixic acid.

26
Q

Staphylococcus cohnii

A

Novobiocin

**These gram-positive bacteria are also intrinsically resistant to aztreonam, polymyxin B/colistin, and nalidixic acid.

27
Q

Staphylococcus xylosus

A

Novobiocin

**These gram-positive bacteria are also intrinsically resistant to aztreonam, polymyxin B/colistin, and nalidixic acid.

28
Q

Enterococcus faecalis

A

Cephalosporins, Aminoglycosides, Clindamycin, Quinupristin-dalfopristin, Trimethoprim, Trimethoprim-sulfamethoxazole, Fusidic Acid

**For Enterococcus spp., cephalosporins, aminoglycosides (except for high-level resistance testing), clindamycin, and trimethoprim-sulfamethoxazole may appear active in vitro but are not effective clinically and should not be reported as susceptible.

29
Q

Enterococcus faecium

A

Cephalosporins, Aminoglycosides, Clindamycin, Trimethoprim, Trimethoprim-sulfamethoxazole, Fusidic Acid

30
Q

Enterococcus gallinarium/E. casseliflavus

A

Cephalosporins, Aminoglycosides, Clindamycin, Trimethoprim, Trimethoprim-sulfamethoxazole, Fusidic Acid, Vancomycin

31
Q

Clostridium and Clostridioides spp

A

Aminoglycosides

32
Q

Clostridium innocuum

A

vancomycin and aminoglycosides

33
Q

Bacteroides spp.

A

Aminoglycosides, Penicillin, Ampicillin

34
Q

Fusobacterium canifelinum

A

Aminoglycosides, Quinolones

35
Q

Listeria monocytogenes

A

cephalosporins

bacteriology (4 decks)

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