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Bacteriology > Bacterio7 > Flashcards

Bacterio7 Flashcards

1
Q

T or F

Pseudomonas can grow on macconkey agar but it’s not an enterobacteriacea

A

True

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2
Q

Pseudomonas belong to the family of ……. and grow on ——

A

Pseudomonads

Fomites

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3
Q

T or F

Pseudomonas is a nosocomial infection

A

True

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4
Q

T or F

Pseudomonas can cause skin infections on intact skin

A

False

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5
Q

Pseudomonas are (aerobic/anaerobic)——(spore forming/not)—– and can live on (high/low) temperatures

A

Aerobic
Non spore forming
High temp

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6
Q

List the virulence factors for pseudomonas

A

1-alginate Capsule (fluffy slime and biofilms)
2-Pigments (structural virulence factors)(pyorubin,pyomelanin,pyocyanin and pyoveridin)
3- exotoxin A (acts on EF2 like DT)
Exotoxins all sites
LPS
Pilli

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7
Q

Role of:
Pyocyanin:
Pyoveridin:

A

Pyocyanin : release of IL8

Pyover: is a siderophore, transports iron

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8
Q

T or F

Pseudomonas secrete exotoxins that affects all sites

A

True

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9
Q

List the 2 resistance mechanisms pseudomonas use with antibiotics

A
  • efflux

- ampC

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10
Q

We never treat pseudomonas by 1 antibiotic, list the antibiotics we can use :

A 
Piperacillin
Aztreonam
Imipinem
Meropenem
Ciprofloxacin
Plus ceftazidimee
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11
Q

T or F

Pseudomonas is a MDR

A

True

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12
Q 
In a nosocomial settings, Pseudomonal infections can cause:
1-
2-
3-
4-
5-
6-
A 
1-pneumonia
2-otitis externa
3-UTIs
4-ecthyma gangrenosum
5- diabetic foot infection
6-keratinisis
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13
Q

Diabetic foot infection is ……. harboring pseudomonas and other bacteria

A

Polymicrobial

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14
Q

If the person is ——, otitis externa will be …… and affects the ……. sinus directly behind the ear
should be treated by ….. antibiotics

A

Diabetic
Malignant otitis externa
Mastoid
PO

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15
Q

……. patients have high risk of developing biofilms of pseudomonas especially in repiratory tract

A

Cystic fibrosis

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16
Q

…….. is not caused by the bacteria itself but ofc there is a predisposition, it’s common in ———

A

Ecthyma gangrenosum

IV drug users

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17
Q

Pseudomonas is cat(—) oxidase(—)

A

Positive positive

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18
Q

Acinetobacter baumanni is a …… infection and strong …… maker just like pseudomonas, it’s cat(—-) ox(—-)

A

Nosocomial
Biofilm
Cat + ox -

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19
Q

Regarding drug resistance, acinetobacter is …..

A

MDR
XDR
PDR

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20
Q

What type of nosocomial settings can cause infection with acinetobacter

A

Mechanical ventilation
Post neurosurgery
Intravascular devices

21
Q

T or F

Percentage of mortality in patients infected with acinetobacter is 60%

A

False

90%

22
Q

Yersinia is a ……. bacteria (change it’s shape) and prt of …….. have …… appearance on staining by ….. or wayson’s dyes

A

Pleiomorphic
Enterobacteriaceae
Bipolar pin
Giemsa

23
Q

T or F

Yersinia pestis is considered zoonotic

A

True

24
Q

Yersinia pestis is (aerobic/anaerobic)——- and (intracellular/extracellular)——-

A

Facultative anaerobes

Facultative intracellular

25
Q

T or F

Humans are accidental hosts for yersinia pestis

A

True

Dead end hosts

26
Q

T or F

Yersinia pestis can cause pneumonic plague (transmitted thru inhalation)

A

True

27
Q

V and W antigens found in yersinia pestis are resposible for

A

Escaping intracellular killing

28
Q

When yesrsinia pestis enters the body , a …….protein called ….. will be activated, this will act as an antagonist of …….. found in flea.

A

Yersinia pestis Capsular
Fraction I
Plasminogen activating protease (coagulase)

29
Q

Host cells for yersinia pestis are :

A

PMN

Macrophages

30
Q

Swelling of the lymph nodes caused by yersini pestis is called…… and eventually will lead to…….

A

Buboes

Necrotic LN

31
Q

Transmission of yersinia pestis by inhalation will cause……

A

Hemorrhagic pneumonia

32
Q

T or F

Yersinia pestis can lead to meningitis

A

True

33
Q

T or F

Yersinia pestis can cause septicemia

A

True

34
Q

Tx of yersinia pestis

A

Streptomycin (aminoglycoside)

35
Q

T or F

The tissue can’t die from raptured buboes

A

False

36
Q

T or F

Yersinia can’t cause hemorrhagic mediastinitis

A

False

37
Q

T or F
Primary pneumonic plagues , the patient gets it in the lungs directly
Most probably he developed buboes

A

False

Almost no buboes in primary pneumonic plagues

38
Q

Yersinia pestis have ……. IP

A

Short

39
Q

Yersinia enterocolitica and pseudotuberculosis are transmitted …….., causes ….. rarely……

A

Fecal orally
Enterocollitis
Bacterimia

40
Q

Enterocolitica and pseudotuberculosis can cause inflammation of lymph nodes on mesentery a case called………, found mostly in —–and if it’s close to the ileum we call it …..

A

Mesenteric adenitis
Children
Terminal illeitis

41
Q

T or F

Yersinia pestis can cause bloody diarrhea

A

False

Entercolitica

42
Q

T or F

Yersinia enterocolitica and pseudotuberculosis can cause appendicitis

A

True

43
Q

Yersinia enterocolitica are detected on ……. because it’s an enterobactriacea

A

Macconkey agar

44
Q

T or F

Yersinia enterocolitica can be found in blood donations after the donor has developed bacterimia

A

True

45
Q

Yersinia enterocolitica and pseudotuberculosis have (high/low) —— inoculum

A

High

46
Q

Enterocolitica grow on a ……… medium

A

Cold enrichment

47
Q

Yerseniosis is a ……. disease

A

Diarrheal

48
Q

T or F

Pseudomonas can cause systemic diseases (eg. bacteremia)

A

True

49
Q

Urea breath test is mainly done to ———-

A

Confirm the eradication of H.pylori

Bacteriology (10 decks)

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