Main Points Flashcards

1
Q

What classes of drugs increase QT interval?

A

Macrolides

Fluoroquinolones

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2
Q

What are the major side effects of Fluoroquinolones?

A

QT interval

Cartilage erosion

Tendon rupture

Photosensitivity

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3
Q

What drug classes cause photosensitivity?

A

Fluoroquinolones

Tetracyclines

Sulfa

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4
Q

What drug is indicated for prostatitis?

A

Ofloxacin

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5
Q

What is the spectrum of metronidazole?

A

Anaerobes only

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6
Q

What drugs are contraindicated in patients with G6PDase deficiency?

A

Sulfa drugs

Nitrofurantoin

(Both can cause aplastic anemia

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7
Q

What are the side effects of Sulfa drugs?

A

Aplastic anemia if you are G6PDase deficient

Stevens-Johnson Syndrome

Photosensitivity

Hypersensitivity-6% of population

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8
Q

What drug class is contraindicated for kids under 8

A

Tetracycline

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9
Q

What drug class is contraindicated in patients under 18?

A

Fluoroquinolones

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10
Q

What drug class is contraindicated for babies under 2 months of age?

A

Sulfa

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11
Q

What drugs should be used for UTIs (In order)

A

Bactrim (1st attack)

Ciprofloxacin

Fosfomycin

Nitrofurantoin

Methenamine

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12
Q

What drug classes bind to the 30s subunit?

A

Aminoglycosides

Tetracyclines

Tigecycline

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13
Q

What are the side effects of tetracyclines?

A

Gut flora changes

Bone growth inhibition

Tooth discoloration

Photosensitivity

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14
Q

What drugs do you have to stop taking multivitamins, calcium supplements and antacids for?

A

Tetracyclines

Fluoroquinolones

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15
Q

What drugs have a disulfiram-like reaction?

A

Cephalosporins

Metronidazole

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16
Q

What are the side effects of cephalosporins?

A

FUCKS UP KIDNEYS (renal tubular necrosis)

Superinfection

Disulfiram-like reaction

Allergy- 10% cross reactivity with PCN allergy

Diarrhea

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17
Q

What organisms are resistant to tetracyclines?

A

Psuedomonas

Proteus

B. Fragilis

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18
Q

What are the fluoroquinolones and what are they for?

A

Ciprofloxacin- UTI, psuedomonas

Ofloxacin- prostate

Levofloxacin- Community acquire pneumonia

Moxifloxacin- anaerobes

Gatifloxacin- eyes

Gemifloxacin- anaerobes

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19
Q

Does aztreonam cover pseudomonas?

A

Yes

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20
Q

Do imipenem and meropenem cover pseudomonas?

A

Yes (in combo with aminoglycoside)

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21
Q

Do aminoglycosides cover pseudomonas?

A

Yes, gentamicin, tobramycin, and amikacin.

Always in a combo

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22
Q

Does ciprofloxacin cover psuedomonas?

A

Yes

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23
Q

Does methenamine cover pseudomonas?

A

Yes

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24
Q

What are the inhibitors of protein synthesis that are cidal

A

Aminoglycosides

Synercid

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25
What are the DOCs for Rocky Mountain Spotted Fever?
Doxycycline Chloramphenicol
26
What are the DOCs for Lyme disease?
Tetracycline Ceftriaxone
27
What are the side effects of aminoglycosides?
Ototoxicity Nephrotoxicity
28
What is the spectrum of fluoroquinolones?
Ciprofloxacin, ofloxacin, levofloxacin, and gatifloxacin cover aerobes Moxifloxacin and gemifloxacin cover anaerobes
29
What is the spectrum of aminoglycosides?
Aerobic G-
30
What is the spectrum of macrolides?
Same as Penicillin G G+....which makes it a great choice for someone with a PCN allergy as long as they are immunocompetent
31
What is the spectrum of telithromycin
Broad spectrum
32
What is the spectrum of mupirocin?
Broad spectrum
33
What is the spectrum of the polypeptides (polymyxin)
G-
34
What is the spectrum of Clindamycin?
Broad spectrum -used for osteomyelitis and TSS
35
What is the spectrum of sulfa drugs?
Broad spectrum
36
What is the spectrum of daptomycin?
G+
37
What is the spectrum of synercid?
Multi drug-resistant aerobic G+
38
What is the spectrum of linezolid?
Aerobic G+
39
What is the spectrum of chloramphenicol?
Broad spectrum | But super toxic
40
What is the spectrum of tetracyclines?
Broad spectrum | Except pseudomonas, proteus, and b.fragilis
41
What is the spectrum of tigecycline?
Broad spectrum
42
What is the spectrum of 1st gen cephalosporins?
Mostly G+ some G-
43
What is the spectrum of 2nd gen cephalosporins
some G+, more G-
44
What is the spectrum of 3rd gen cephalosporins?
G+/G- - - plus Ceftazidime will do pseudomonas
45
What is the spectrum of 4th gen cephalosporins (cefapime)
Very broad spectrum
46
What is the spectrum of 5th gen cephalosporins (ceftaroline)
Broad spectrum No pseudomonas MRSA and VRSA***** (only B-lactam)
47
What is the spectrum of aztreonam?
Aerobic G-
48
What is the spectrum of carbapenems?
Broad spectrum Pseudomonas, except for ertapenem
49
What is the spectrum of vancomycin?
G+
50
What is the spectrum of fosfomycin?
Broad spectrum
51
What is fosfomycins mechanism of action?
Inhibits one of the very first steps of cell wall synthesis, which is reducing NAG to NAM.
52
What is fosfomycin used for?
Lower UTI in women after Bactrim or Cipro has been tried
53
What is the spectrum of bacitracin?
G+
54
What is the spectrum of natural penicillins?
G+
55
What is the spectrum of penicillinase-resistant penicillins?
G+/G- MSSA
56
What is the spectrum of extended spectrum penicillins?
G+/G- - No pseudomonas
57
What is the spectrum of antipseudomonal penicillins?
G+/G- - - Pseudomonas
58
What is the spectrum of nitrofurantoin?
Broad spectrum No proteus or pseudomonas
59
What is the spectrum of methenamine?
All bacteria
60
Are aminoglycosides oral?
No, always parenteral
61
Are aminoglycosides given alone?
No, always in combo with other drugs.
62
What drugs are unsafe for pregnant women?
Nitrofurantoin Sulfa Fluoroquinolones Bactrim Tetracyclines
63
What drug classes bind to the 50s protein?
Macrolides Ketolides (telithromycin) Clindamycin Synercid Linezolid Chloramphenicol
64
Is chloramphenicol static or cidal?
Static It is an inhibitor of protein synthesis
65
What are the classes that inhibit cell wall synthesis?
Penicillins Cephalosporins Carbapenems Monobactams (aztreonam) Vancomycin Fosfomycin Bacitracin
66
Which macrolide has the lowest drug interaction potential?
Azithromycin
67
Which macrolide has the highest potential for GI effects?
Erythromycin
68
Which macrolide has the least potential for GI effects?
Clarithromycin
69
Which macrolide has the most effect on QT interval?
Azithromycin
70
Is Bactrim cidal?
It is static, except for in the urinary tract, where it is cidal
71
Is imipinem cidal?
Yes it is a carbapenems, an ICWS
72
Is fosfomycin cidal?
Yes, it inhibits cell wall synthesis at a very early step (turning NAG to NAM)
73
What drug is used for anthrax prophylaxis?
Ciprofloxacin | Poor post man might rupture his tendon walking around delivering mail