Gram-negative Flashcards

0
Q

Gram negative
Insignificant capsule
Ferments glucose ONLY

A

Neisseria gonorrhoeae

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1
Q

Gram negative diplococci
Kidney-bean shape
Encapsulated
Ferments maltose AND glucose

A

Neisseria meningitidis

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2
Q

DOC Neisseria meningitidis

A

Penicillin G

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3
Q

MCC meningitis in ages 2-18

A

Neisseria meningitidis

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4
Q

Most severe form of meningococcemia

(+) bilateral adrenal insufficiency/destruction

A

Waterhouse-friderichsen syndrome

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5
Q

Causes of Waterhouse-Friderichsen syndrome (2)

A
Neisseria meningitidis
Strep pneumoniae (less common)
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6
Q

DOC Neisseria gonorrhoeae

A

Ceftriaxone

Add: doxycycline (if suspect chlamidya)

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7
Q

Thayer-Martin medium

A

Neisseria gonnorhoeae

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8
Q

MCC urethritis

A

Neisseria gonorrhoeae

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9
Q

MCC Pelvic Inflammatory Disease (PID)

A

Neisseria gonorrhoeae

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10
Q

Fitz-Hugh-Curtis syndrome (perihepatitis)

Violin-sting adhesions

A

Neisseria gonorrhoeae

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11
Q

MCC septic arthritis in sexually active adults

A

Neisseria gonorrhoeae

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12
Q

Bordet-gengou agar

Regan-Lowe agar

A

Bordetella pertussis

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13
Q

Agar for identification of Haemophilus influenzae

A
Enriched CHOCOLATE AGAR with: 
Factor X (hemin)
Factor V (NAD)
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14
Q

Thumb sign

A

Haemophilus influenzae

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15
Q

MCC epiglottitis

Cherry red epiglottis

A

Haemophilus influenzae

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16
Q

DOC Haemophilus influenzae

A

Ceftriaxone

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17
Q

Phase of the Bordetella pertussis natural history when there is highest population and highest yield for culture

A

Catarrhal phase

Natural history: incubation -> catarrhal -> paroxysmal (leukocytosis) -> convalescent

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18
Q

DOC Bordetella pertussis

A

Erythromycin

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19
Q

Silver stain

Charcoal yeast extract agar

A

Legionella pneumophila

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20
Q

DOC Legionella pneumophila

A

Macrolides (azithromycin/erythromycin)

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21
Q

Pontiac fever

A

Legionella pneumophila

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22
Q

Gram negative

Green metallic sheen

A

E. coli

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23
Q

Gram negative
Lactose fermenter
Urease positive
Extended spectrum beta-lactamase

A

Klebsiella pneumoniae

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24
Q

Shooting star motility

A

Vibrio cholerae

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25
Q

Comma shaped
Motile
Gram negative
Oxidase-positive

A

Vibrio cholerae

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26
Q

Comma shaped
Microaerophillic
Gram negative
(2)

A

Campylobacter jejuni

Helicobacter pylori

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27
Q

PUD associated

Urease positive

A

Helicobacter pylori

28
Q

Skirrows agar

A

Campylobacter jejuni

29
Q

Swarming motility

A

Proteus mirabilis

30
Q

Grape like odor

Pyocyanin (blue-green pigment)

A

Pseudomonas aeruginosa

31
Q

Fast lactose fermenters

A

Citrobacter
Klebsiella
E. coli
Enterobacter

32
Q

Slow lactose fermenters

A

Citrobacter

Serratia

33
Q

EMB or MacConkey’s agar

A

E. coli

34
Q

MCC community-acquired and nosocomial UTI

A

E. coli

35
Q

Neonatal meningitis pathogens (3)

A

B group strep (S agalactiae)
E. coli
Listeria monocytogenes

36
Q

Travelers diarrhea

A

ETEC

37
Q

Hemolytic uremic syndrome, hemorrhagic colitis, bloody diarrhea

A

EHEC

38
Q

Specific cause of EHEC

A

E. coli O157:H7

39
Q

Causes if ATYPICAL pneumonia (3)

A
Mycoplasma pneumoniae (MCC)
Legionella pneumoniae
Chlamidya pneumoniae/chlamidophilia
40
Q

Widal test

A

Salmonella spp.

*test is no longer used

41
Q

XLD (xylose lysine deoxycholate) medium

A

Salmonella & Shigella

42
Q

DOC Salmonella

A

Ceftriaxone

Philippines: amoxicillin, chloramphenicol, co-trimoxazole

43
Q

Antigen seen in S typhi infection

A

Vi capsular antigen

44
Q

DOC Salmonella carriage in the gallbladder

A

Ampicillin

45
Q

Best culture source for typhoid fever (per week of illness)

A

1 blood
2 urine
3 stool
4 bone marrow

Chronic carrier bile, stool, bone marrow

46
Q

Gram negative rods
Non lactose fermenting
Non motile
Has O antigens

A

Shigella

47
Q

Most common cause of bacillary dysentery

A

Shigella sonnei (Duval’s bacillus)

48
Q

Most severe form of bacillary dysentery

A

Shigella dysenteriae type 1 (Shiga bacillus)

49
Q

Most common cause of epidemic dysentery

A

Shigella dysenteriae type 1 (Shiga bacillus)

50
Q

Comma shaped gram negative rods

Motile

A

Vibrio

51
Q

Vibrio is cultured on what medium?

A

Thiosulfate citrate bile salts sucrose (TCBS)

52
Q

Cause of vibrio cholera pandemic?

A

Vibrio cholera O1 bio type El Tor (cholera El Tor)

53
Q

Rice water stools

A

Vibrio cholera

54
Q

DOC Cholera

A

Tetracycline

55
Q

Most common cause of bacterial gastroenteritis

A

Campylobacter jejuni

56
Q

Uveitis, urethritis, arthritis

A

Reiter’s syndrome

57
Q

Microaerophillic gram negative rod

Urease positive

A

Helicobacter pylori

58
Q

Urease positive bacteria (4)

A

Helicobacter pylori
Proteus mirabilis
Klebsiella pneumoniae
Ureaplasma urealyticum

59
Q

Currant jelly sputum

A

Klebsiella pneumoniae

60
Q

MCC pneumonia in alcoholics

A

Klebsiella pneumoniae

61
Q

Cetrimide agar

A

Pseudomonas aeruginosa

62
Q

Habitat of environmental water sources and even sterile water

A

Pseudomonas aeruginosa

63
Q

Hot tub folliculitis

A

Pseudomonas aeruginosa

64
Q

MCC Otitis externa, malignant otitis externa in diabetics, CSOM

A

Pseudomonas aeruginosa

65
Q

Only 3rd gen cephalosporin that can be given to Pseudomonas infection

A

Ceftazidime

66
Q

Predominant anaerobe of the human colon

A

Bacteroides fragilis

67
Q

2nd gen cephalosporin with anaerobic coverage

A

Cefoxitin