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UWorld Review > gram positive > Flashcards

gram positive Flashcards

1
Q

aerobic bacilli

A

listeria
bacillus
corynebacterium

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2
Q

anaerobic bacilli

A

clostridium

cutibacterium (propionibacterium)

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3
Q

aerobic branching filaments

A

nocardia

weakly acid fast

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4
Q

anaerobic branching filaments

A

actinomyces

not acid fast

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5
Q

Catalase positive

A

staphylococcus

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6
Q

Catalase negative

A

streptococcus

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7
Q

catalase and coagulase positive

A

S. aureus

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8
Q

Catalase positive
coagulase negative
novobiocin insensitive

A

S. saprophyticus

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9
Q

Catalase positive
coagulase negative
novobiocin sensitive

A

S. epidermidis

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10
Q

Strept
alpha hemolysis (partial, green)
optochin insensitive
bile insolubility

A

Viridans strep
S. mutans
S. mitis

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11
Q

Strep
alpha hemolysis (partial, green)
optochin sensitive
bile soluble

A

pneumococcus (encapsulated)

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12
Q

OVRPS

A

Optochin
viridans resistant
pneumococcus sensitive

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13
Q

Strep
beta hemolysis (clear)
bacitracin insensitive
negative PYR

A

GBS

S. agalactiae

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14
Q

Strep
beta hemolysis (clear)
bacitracin sensitive
positive PYR

A

GAS

S. pyogenes

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15
Q

B-BRAS

A

Bacitracin
group B is resistant
group a is sensitive

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16
Q

What kind of hemolysis does S. aureus have

A

Beta

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17
Q

MRSA is resistance because

A

altered penicillin binding protein

mecA gene from staph chromosomal cassette involved in penicillin resistance

18
Q

Contaminates blood cultures

infects prosthetic devices and IV catheters (biofilms)

A

S. epidermidis

19
Q

Normal flora of female genital tract and perineum

2nd MCC uncomplicated UTI in young women

A

S. saprophyticus

20
Q

Pneumococcus can cause

A

meningitis
otitis media
PNA
sinusitis

21
Q

Makes dextrans that bind fibrin platelet aggregates on damaged heart valves causing subacute bacterial endocarditis

A

S. sanguinis

22
Q

Subacute endocarditis after GI/GU procedures

A

Enterococci

23
Q

Labs for enterococcus

A

Catalase negative
PYR positive
variable hemolysis
more resilient that strep, can grow in 6.5% NaCl and bile

24
Q

Normal colonic flora that is resistant to penicillin G

A

Enterococcus

25
Q

Medusa head

A

Bacillus anthracis

26
Q

Bacteremia and subacute endocarditis associated with colon cancer

A

Strep bovis

27
Q

Oral/facial abscesses that drain through sinus tracts

often assoc. with dental carries, extraction, maxillofacial trauma

forms yellow sulfur granules

A

Actinomyces

28
Q

PID with IUDs

A

Actinomyces

29
Q

Tx Actinomyces with

A

Penicillin

30
Q

Treat Nocardia with

A

Bactrim

31
Q

Pulmonary infection in immunocompromised that mimics TB but is PPD negative

cutaneous infections after trauma in immunocompetent

can spread to CNS

A

Nocardia

32
Q

Nocardia is found in the

A

soil

33
Q

Actinomyces is found in

A

normal oral, reproductive, GI flora

34
Q

Gram + that have long, branching filaments resembling fungi

A

Nocardia

Actinomyces

35
Q

Causes amnionitis, septicemia, spontaneous abortion, granulomatosis infantiseptica, neonatal meningitis, meningitis in immunocompromised

A

Listeria monocytogenes

36
Q

ingestion of unpasteurized dairy products
cold deli meats
trans placental transmission via vagina
grows well at regfridgerator temps

A

listeria monocytogenes

37
Q

Tumbles in broth

A

Listeria monocytogenes

38
Q

Prophylaxis with azithromycin when CD4+ count <50 in HIV

A

Mycobacteria avium

39
Q

Hand infection in aquarium handlers

A

Mycobacteria marinum

40
Q

Cervical lymphadenitis in children

A

Mycobacterium scrofulaceum

UWorld Review (35 decks)

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