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Microbiology > Gram Negative > Flashcards

Gram Negative Flashcards

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1
Q

Gram negative rods; non-lactose fermenters

A

Salmonella
Shigella
Proteus mirabilis
P. aeruginosa

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2
Q

Lactose fermenter; green sheen on EMB agar; facultative

A

E. coli

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3
Q

Lactose fermenter; urease +; extended spectrum betalactamase

A

K. pneumoniae

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4
Q

Gram negative; comma-shaped; microaerophilic; skirrows agar

A

C. jejuni

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5
Q

Gram negative; comma-shaped; urease positive

A

H. pylori

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6
Q

Gram negative; non lactose fermenter; motile; oxidase +; H2S producer

A

Salmonella

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7
Q

Gram negative; non lactose fermenter; non motile; oxidase negative; H2S non producer

A

Shigella

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8
Q

Gram negative; non lactose fermenter; swarming; oxidase negative; H2S producer; urease

A

Proteus mirabilis

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9
Q

Gram negative; non lactose fermenter; oxidase positive; H2S non producer; obligate aerobe; fruity odor; MDR

A

Pseudomonas aeruginosa

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10
Q

Lactose fermenters

A

Citrobacter
Klebsiella
E. coli
Enterobacter

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11
Q

Gram negative rod; Urease positive

A

K. pneumoniae
H. pylori
P. mirabilis

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12
Q

Gram negative rod; H2S producer

A

Salmonella

Proteus mirabilis

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13
Q

Gram negative rod; H2S nonproducer

A

Shigella

P. aeruginosa

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14
Q

E. coli enterotoxin which causes watery diarrhea

A

Heat stable toxin

Heat labile toxin

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15
Q

E. coli enterotoxin which causes bloody diarrhea (HUS)

A

Verotoxin (Shiga-like)

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16
Q

Enterobacteriaceae

A 
MESSY SPECK
Morganella
Escherichia
Shigella
Salmonella
Yersinia
Serratia
Proteus
Enterobacter
Citrobacter
Klebsiella
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17
Q

MCC of community-acquired UTI

A

E. coli

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18
Q

Causes neonatal meningitis

A

B group streptococci (S. agalactiae)
E. coli
L. monocytogenes

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19
Q

E. coli strain which causes watery diarrhea; Traveller’s diarrhea

A

ETEC

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20
Q

E. coli strain which causes watery diarrhea of long duration, mostly in infants, often in developing countries

A

EPEC

P-Pedia, Philippines

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21
Q

E. coli strain which causes bloody diarrhea; hemolytic colitis; HUS

A

EHEC or STEC (Shiga-like toxin producing E. coli)

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22
Q

E. coli strain which causes bloody diarrhea

A

EIEC

EHEC

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23
Q

DOC for UTI caused by E. coli in the Philippines

A

Quinolones

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24
Q

Salmonella test which detects antibodies in patient’s serum

A

Widal test

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25
Q

Virulence factor of Salmonella which causes typhoid fever

A

Vi capsular antigen

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26
Q

Chronic carriage of Salmonella affects what organ?

A

Gallbladder

27
Q

Tx for Salmonella gallbladder carriage

A

Ampicillin

28
Q

MCC of osteomyelitis in patients with sickle cell anemia

A

Salmonella choleraesuis

29
Q

Stepwise fever, anorexia, malaise, relative bradycardia. Typhoid fever suspect. Best specimen is?

A

Blood

30
Q

Abdominal pain, bloating, constipation, rose spots, hepatosplenomegaly, jaundice. Typhoid fever suspect. Best specimen is?

A

Urine

31
Q

Week of complication: Bleeding, ileitis, pneumonia. Typhoid fever suspect. Best specimen is?

A

Stool

32
Q

DOC of Salmonella in the Philippines

A

Amoxicillin
Chloramphenicol
Cotrimoxazole

33
Q

Shigella dysenteriae type 1 is also called as?

A

Shiga bacillus

34
Q

Shigella dysenteriae type 2 is also called as?

A

Schmitz bacillus

35
Q

Shigella flexneri is also called as?

A

Hiss and Russell’s bacillus

36
Q

Shigella boydii is also called as?

A

Newcastle Manchester bacillus

37
Q

Shigella sonnei is also called as?

A

Duval’s bacillus

38
Q

DOC for shigellosis?

A

Ciprofloxacin

Nalidixic acid in children

39
Q

Shooting star motility

A

Vibrio

40
Q

Shigellosis pandemic is caused by?

A

V. cholerae 01 biotype El Tor (Cholera El Tor)

41
Q

Rice watery stools; washer woman’s hands

A

Cholera

42
Q

DOC for cholera

A

Tetracycline

Alternative: azithromycin

43
Q

Raw chicken

A

C. jejuni

44
Q

MCC cause of bacterial gastroenteritis

A

C. jejuni

45
Q

C. jejuni is associated with?

A

GBS

Reiter’s syndrome

46
Q

Tx for C. jejuni infection

A

Symptomatic tx only

Erythromycin for severe disease

47
Q

Gold standard dx test for H. pylori

A

EGD with biopsy

48
Q

Dx test for H. pylori used to document cure

A

H. pylori stool antigen

49
Q

Facultative gram - rod with large polysaccharide capsule

A

K. pneumoniae

50
Q

MCC of pneumonia (necrotizing) in alcoholics

A

K. pneumoniae

51
Q

Currant jelly sputum; nosocomial

A

K. pneumoniae

52
Q

DOC for K. pneumoniae infection

A

Cephalosporins alone or with aminoglycosides

53
Q

Causes struvite stones

A

P. mirabilis

54
Q

Produces pyocyanin (blue-green pigment); sweet grape-like odor

A

P. aeruginosa

55
Q

Grows in hospital respirators and humidifiers

A

P. aeruginosa

56
Q

Virulence factor of P. aeruginosa which damages cilia and mucosal cells

A

Pyocyanin

57
Q

Causes hot tub folliculitis; puncture wound osteomyelitis; green nail syndrome

A

P. aeruginosa

58
Q

MCC of otitis externa, malignant otitis externa in DM, and CSOM

A

P. aeruginosa

59
Q

What type of pneumonia does P. aeruginosa causes?

A

VAP

60
Q

Causes peritonitis in patients undergoing peritoneal dialysis

A

P. aeruginosa

61
Q

Causes ecthyma gangrenosum

A

P. aeruginosa

62
Q

Predominant anaerobe of human colon

A

B. fragilis

63
Q

Causes abdominal abscess

A

B. fragilis

64
Q

Gram negative rods; lactose fermenter

A

E. coli

K. pneumoniae

Microbiology (9 decks)

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