Microbiology 21: Antimicrobial Agents 2 Flashcards

1
Q

What are the 2 common organisms that cause skin infections such as Impetigo or Cellulitis ?

What antibiotic is commonly used to treat these ?

A

Staph Aureus
Beta haemolytic streptococcus

Flucloxacilin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Which 2 toxicitys must you consider when giving aminoglycosides ?

A

Ototoxicity

Nephrotoxicity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Which antibiotic is common used to treat mild typical CAP ?

A

Amoxicillin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is the most common causative organism of CAP ?

A

Streptococcus pneumonia

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

List 3 atypical organisms that cause CAP ?

A

Legionella, Mycoplasma, Chlamydia

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Which antibiotic is commonly used to treat Bacterial meningitis ?

A

Ceftriaxone

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Why is ceftriaxone not given to children under 3 months of age ?

A

Causes biliary sludging

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

List 2 sequele you worry about after a streptococcal infection ?

A

Glomerulonepohritis

Rheumatic fever

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Which antibiotics are commonly used to treat HAP ?

A

Amixicillin + gentamicin
or
Tazocin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Which antibiotic is commonly used to treat simple cystitis in the community setting ?

A

Trimethoprim

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Which antibiotic is commonly used to treat Hospital acquired UTI ?

A

Cephalexin or augmentin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Which antibiotic is common used to treat atypical CAP ?

A

Macrolide (Erythromycin/Clarythromycin) + Tetracycline (doxycycline)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Which antibiotic is common used to treat severe typical CAP ?

A

Penicillin (Co-amoxiclav) + Macrolide (Clarithromycin)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Which antibiotics are used to treat HAP due to aspiration ?

A

Cefuroxime + metronidazole

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Which antibiotics are used to treat atypical CAP with confirmed legionella ?

A

Rifampicin + Macrolide (Erythromycin, Clarythromycin)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Which antibiotics could be used to treat HAP with Pseudomonass spp. ?

A

Tazocin (pippericilin + Tazobactam) or ciprofloxacin + gentamicin

17
Q

What is the treatment for primary Syphilis ?

A

IM benzyl penicillin

18
Q

What is the treatment for N.Ghonorrhoea ?

A

IM ceftriaxone

19
Q

What is the treatment for Chlamydia ?

A

Doxycycline (or azithromycin)

20
Q

What is the treatment for BV?

A

Metronidazole

21
Q

What is the treatment for Trichomoniasis ?

A

Metronidazole

22
Q

What is the treatment of bacterial meningitis due to N.meningitidis or S.Pneumonia ?

A

Ceftriaxone + Prednisolone

23
Q

What is the treatment of bacterial meningitis due to Listeria ?

A

Ceftriaxone + Ampicillin + Prednisolone

24
Q

What is the treatment of PID ?

A

IM Ceftriaxone + Metronidazole

25
Q

name two methods of antibiotic susceptibility testing

A

MIC (minimum inhibitory concentration)

Agar disc diffusion method

26
Q

when is IV to PO switching of antibiotics usually recommended

A

if the patient has stabilised after 48 hrs of IV treatment

27
Q

describe the 3 main patterns of antibiotic activity

A

TYPE 1: concentration dependent killing and prolonged persistent effects eg aminoglycosides

TYPE 2: time dependent killing and minimal persistent effects eg carbapenems

TYPE 3: time dependent killing and moderate to prolonged persistent effects

28
Q

what are the lengths of treatment for the following:

  • N meningitidis meningitis
  • Acute osteomyelitis
  • bacterial endocarditis
  • group A strep pharyngitis
  • simple cystitis
A
1 - 7 days 
2 - 6 weeks 
3 - 4-6 weeks 
4 - 10 days 
5 - 3 days
29
Q

antibiotic or choices for:
1 - pharyngitis
2 - mild CAP
3 - severe CAP

A

1 - ben pen 10 days
2 - amoxicillin
3 - co-amoxiclav + clarythromycin

30
Q

antibiotic treatment for bacterial meningitis

A

ceftriaxone
(+ amoxicillin if listeria likely)

baby <3 months - cefotaxime + amoxicillin

nisseria meningitidis - ben pen

31
Q

antibiotic treatment for:
1 - simple cystitis
2 - hospital acquired UTI
3 - infected urinary catheter

A

1 - trimethoprim 3 days
2 - cephalexin/ augmentin
3 - gentamicin