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Microbiology > Gram Positive Bacteria > Flashcards

Gram Positive Bacteria Flashcards

0
Q

Catalase positive, cougulase negative, novo biotin sensitive

A

Staphylococcus epidermidis

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1
Q

Catalase positive, coagulase positive

A

Staphylococcus aureus

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2
Q

Catalase positive, coagulase negative, novobiocin resistant

A

Staphylococcus saprophyticus

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3
Q

Most common cause of acute endocarditis in native valve

IV drug user

A

Staph aureus

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4
Q

Toxins:

SSS (Ritter’s dse)/ TSS

A

Exfoliatin/TSST1

*TSS- no site of pyogenic infection

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5
Q

Strawberry tongue seen in

A

TSS
Scarlet fever
Kawasaki dse

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6
Q

DOC for MSSA vs MRSA vs VRSA

A

Nafcillin, Oxacillin, dicloxacillin /
Vancomycin /
Linezolid

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7
Q

Cephalosporins not effective against

A

MRSA
Enterococci
Listeria monocytogenes

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8
Q

MCC of prosthetic valve endocarditis and ventriculoperitoneal shunt infection

A

Staphylococcus epidermidis (glycocalyx forming biofilm)

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9
Q

DOC for Staph epidermidis

A

Vancomycin

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10
Q

Second most common cause of UTI in sexually active women/ DOC

A

Staph saprophyticus

TMP-SMX, quinolones

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11
Q

Catalase neg, alpha hemolytic, bile-optochin- sensitive

A

Streptococcus pneumoniae

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12
Q

Catalase neg, alpha hemolytic, bile-optochin-resistant

A

viridans Streptococcus

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13
Q

Catalase neg, beta hemolytic, bacitracin sensitive

A

Streptococcus pyogenes

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14
Q

Catalase neg, beta hemolytic, bacitracin resistant

A

Streptococcus agalactiae

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15
Q

Catalase neg, gamma hemolytic

A

Group D Streptococcus

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16
Q

PYR test positive

A

Strep pyogenes

Group D strep

17
Q

Toxins: toxic shock (strep)/necrotizing fasciitis

A

Pyogenic exotoxin A/ exotoxin B

18
Q

Skin infection caused by strep pyogenes

NICE

A

Necrotizing fasciitis
Impetigo contamgiosa
Cellulitis
Erysipelas

19
Q

JONES criteria for RH

A 
Joints (migratory polyarthritis)
Oh my heart (pancarditis) 
Nodules
Erythema marginatum
Sydenham chorea
20
Q

DOC for strep pyogenes

21
Q

MCC neonatal sepsis, pneumonia, meningitis

A

Strep agalactiae

22
Q

Screening for GBS/chemoprophylaxis/DOC

A

35-37th week AOG/ Pen G or Ampicillin 4hrs prior to delivery/ PenG +/- aminoglycoside

23
Q

Etiology endocarditis (post GI surg) / Marantic endocarditis ( colorectal CA, pancreatic CA)

A

E. faecalis/ S. bovis

24
Q

Positive Quellung reaction (post capsular swelling)

Some Killers Have Pretty Nice and Shiny Bodies

A 
Strep pneumoniae
Klebsiella 
Haemophilus influenza
Pseudomonas aeruginosa
Neisseria gonorrhea
Salmonella typhi
B group strep
25
Q

MCC: CAP, adult meningitis

Prevention

A

Strep pneumoniae

Polysaccharide vaccine, conjugated vaccine (+diphtheria toxoid)

26
Q

Etiology: dental caries/ subacute native heart valve endocarditis / brain abscess

A

S. mutans/ S. sanguis/ S. intermedius

27
Q

Motility:

Tumbling/swarming/shooting star/ falling leaf

A

Listeria monocytogenes/ Proteus mirabilis/ Vibrio cholera/ Gardia lambda

28
Q

Aerobic, non-motile, box car shaped, medusa head
Wool sorters dse
EF LF PA

A

B. anthracis

29
Q

Aerobic, motile, reheated fried rice

30
Q

Anaerobic, tennis racket like

A

Clostridium tetani

31
Q

Anaerobic, bulging cans

A

Clostridium botulinum

32
Q

Anaerobic, lecithinase, gas forming, gas gangrene

A

Clostridium perfringens

33
Q

Anaerobic, pseudomembranes

A

Clostridium difficile

34
Q

No spore forming, aerobic, non motile, curved, Chinese character, metachromatic granules
Pseudomembranous pharyngitis

A

Corynebacterium diphtheria

35
Q

Non-spore forming, aerobic, curved, tumbling motility, cold enhancement, unpasteurized milk products

A

Listeria monocytogenes

36
Q

MCC death:pulmonary hemorrhage

A

Inhalational anthrax
Congenital syphilis
Weil’s syndrome

37
Q

DOC for B. anthracis

A

Ciprofloxacin +/- rifampicin, vancomycin, PCN, imipenem, clindamycin, clarithromycin

38
Q

Spastic vs flaccid paralysis

A

C. Tetani vs. C. Botulinum

39
Q

Triad of botulism

A

Symmetric descending flaccid paralysis with diplopia, dysphonia, dysarthria, dysphagia

Absence of fever

Intact sensorium

40
Q

Etiology: Pseudomembranous enterocolitis

A

Clostridium difficile
Clindamycin, cephalosporin, ampicillin

DOC: metronidazole, vancomycin

41
Q

Beta prophage encoded toxin

ABCDE

A 
shigA-like toxin (EHEC)
Botulinum toxin
Cholera toxin
Diphtheria toxin
Erythrogenic toxin (S. pyogenes)

Microbiology (10 decks)

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