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Steph MICRO > Gram-positive > Flashcards

Gram-positive Flashcards

(68 cards)

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0
Q

Titer to document antecedent skin infection in strep pyogenes infection

A

Anti-DNAse B

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1
Q 
Gram positive cocci in chains
Beta hemolytic
Bacitracin-SENSITIVE
positive PYR 
Lancefield A
A

Streptococcus pyogenes

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2
Q

Titer to detect antecedent pharyngitis in strep pyogenes infection

A

Anti-streptolysin O (ASO)

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3
Q

DOC streptococcus pyogenes

A

Penicillin G

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4
Q

Spreading factor

A

Hyaluronidase

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5
Q

Protease that rapidly destroys tissue in strep pyogenes infection?
Pyogenic skin and soft tissue infection that it causes?

A

Exotoxin B

Necrotizing fasciitis

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6
Q

Peritonsillar and retropharyngeal abscess

A

Quincy

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7
Q

Disease presenting with fever, strawberry tongue, centrifugal rash (sandpaper like), pastia’s lines, desquamation?
Etiologic agent?

A

Scarlet fever.

Strep pyogenes.

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8
Q

Test for susceptibility of scarlet fever

A

Dick test

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9
Q

Jones criteria (5)

A

Migratory polyarthritis, pancarditis, subcutaneous nodules, erythema marginatum, Sydenham’s chorea

MN: J-O-N-E-S (joints, oh my heart, nodules, erythema, Sydenham)

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10
Q

DOC: Glomerulonephritis (post-pharyngeal/post-impetigo

A

Penicillin G, penicillin v (oral)

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11
Q

DOC: Streptococcus agalactiae (GBS)

A

Penicillin G

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12
Q 
Gram positive cocci 
Beta-hemolytic 
Bacitracin-RESISTANT
CAMP test POSITIVE 
Lancefield group B

Grown using the LIM broth

A

Strep agalactiae (group B strep)

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13
Q

Rapid test to screen for GBS in neonates and pregnant women

A

LIM broth

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14
Q

MCC Neonatal Sepsis

A

Streptococcus agalactiae (GBS)

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15
Q 
Gram positive cocci in chains 
Catalase-negative
Gamma colonies
Lancefield group D
Positive PYR test

Hydrolyzes ESCULIN in bile-Esculin agar (BEA)

A

Group D strep (enterococcus faecalis)

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16
Q

Type of endocarditis in patients with abdominal malignancy (colorectal or pancreatic ca) due to Streptococcus bovis

A

Marantic

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17
Q

Patients who underwent GIT surgery are prone to endocarditis due to?

A

Enterococcus faecalis

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18
Q

DOC Strep pneumoniae

A

Penicillin G

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19
Q 
Gram positive diplococci or short chains
Lancet-shaped 
Alpha hemolytic
Sensitive to bile and optochin
Prominent polysaccharide capsule
A

Strep pneumoniae

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20
Q

Positive QUELLUNG reaction

Tests for capsular swelling

A

Strep pneumoniae

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21
Q

Encapsulated bacteria

A

Strep pneumoniae
Neisseria meningitidis
Haemophilus influenza
Klebsiella pneumoniae

Pseudomonas aeruginosa, salmonella typhi, Group B strep

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22
Q

Most common cause of CAP

A

Strep pneumoniae

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23
Q

Most common cause of:
Otitis media (children)
Meningitis (elderly)
Bacterial sinusitis (general)

A

Strep pneumoniae

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24
Congenital absence of the spleen
IVEMARK syndrome
25
Gram positive cocci in chains Alpha hemolytic Catalase negative Bile and optochin RESISTANT
Viridans streptococci (strep mutans, strep sanguis)
26
Most common cause of subacute and native valve endocarditis
Strep sanguis (type of viridans)
27
Spore forming gram positive rods Aerobic NON-motile
Bacillus anthracis
28
Unique morphology of bacillus anthracis (2)
Medusa head morphology | Box car shaped
29
Chinese fried rice syndrome
Bacillus cereus
30
Aerobic Spore forming Gram positive Motile
Bacillus cereus
31
Anaerobic Gram positive Spore forming rod Lollipop/tennis-racket-like
Clostridium tetani
32
Spastic paralysis
Clostridium tetani
33
Flaccid paralysis
Clostridium botulinum
34
Chinese characters Non motile Non spore forming Gram positive
Corynebacterium diptheriae
35
Tumbling motility Gram positive Non spore forming
Listeria monocytogenes
36
Psedomembranous colitis
Clostridium difficile
37
Pseudomembranous pharyngitis
Corynebacterium diptheriae
38
Pseudomembranous esophagitis
Candida albicans
39
``` Spore forming Gram positive rods Anaerobic Lecithinase gas forming Double hemolysis ```
Clostridium perfringens
40
Infections where most common cause of mortality is PULMONARY HEMORRHAGE (3)
Inhalational anthrax Congenital syphillis Weil's syndrome (severe leptospirosis)
41
DOC Cutaneous anthrax
Ciprofloxacin
42
Woolsorter's disease
Bacillus anthracis
43
Malignant pustule with Escher and central necrosis | Mortality 20%
Cutaneous anthrax
44
Bacteriostatic drug that becomes CIDAL when given in high doses
Clindamycin
45
DOC clostridium tetani
Penicillin Passive immunization: ATS Vaccination: tetanus toxoid (childhood + every 10 years)
46
Bulbar signs of food borne botulism (4)
Diplopia Dysphonia Dysarthria Dysphagia
47
Triad of botulism
Symmetric descending FLACCID paralysis (prominent bulbar involvement) ABSENCE of fever Intact sensorium
48
Infant botulism
Floppy baby syndrome
49
Egg yolk agar
Clostridium perfringens
50
Gas gangrene
Clostridium perfringens | Due to alpha toxin
51
DOC Clostridium difficile
ORAL Metronidazole ORAL Vancomycin Oral = poor absorption in blood, stays in the colon longer
52
Comma/club shaped | Chinese character like
Corynebacterium diptheriae Aerobic Non spore forming Non motile Gram positive
53
Babes Ernst granules/voluminous granules/metachromatic granules
Corynebacterium diptheriae
54
Telluride plate
Corynebacterium diptheriae
55
Modified elek test
Corynebacterium diptheriae
56
Bull neck
Corynebacterium diptheriae
57
DOC Listeria monocytogenes
Ampilcillin (with or w/o gantamicin) cephalosporins are INEFFECTIVE
58
Tumbling motility
Listeria monocytogenes
59
Cold enhancement (paradoxical growth in cold temp)
Listeria monocytogenes
60
Unpasteurized milk products
Listeria monocytogenes
61
Gram positive cocci | Grape like clusters
Staph aureus
62
Agar used for diagnosis of S. aureus
Mannitol salts
63
Golden color of S. aureus is due to
Staohyloxanthin
64
MCC acute endocarditis
S. aureus (usually tricuspid valve in IV dug users)
65
Sequestered focus of osteomyelitis arising in the metaphysical area of a long bone due to S. aureus infection
Brodie abscess
66
Ritter disease
Scalded skin syndrome sec. to S. aureus
67
DOC Staph epidermidis
Vancomycin

Steph MICRO (7 decks)

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