gram positive

Question 1

aerobic bacilli

Answer 1

listeria
bacillus
corynebacterium

Question 2

anaerobic bacilli

Answer 2

clostridium

cutibacterium (propionibacterium)

Question 3

aerobic branching filaments

Answer 3

nocardia

weakly acid fast

Question 4

anaerobic branching filaments

Answer 4

actinomyces

not acid fast

Question 5

Catalase positive

Answer 5

staphylococcus

Question 6

Catalase negative

Answer 6

streptococcus

Question 7

catalase and coagulase positive

Answer 7

S. aureus

Question 8

Catalase positive
coagulase negative
novobiocin insensitive

Answer 8

S. saprophyticus

Question 9

Catalase positive
coagulase negative
novobiocin sensitive

Answer 9

S. epidermidis

Question 10

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

Answer 10

Viridans strep
S. mutans
S. mitis

Question 11

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

Answer 11

pneumococcus (encapsulated)

Question 12

OVRPS

Answer 12

Optochin
viridans resistant
pneumococcus sensitive

Question 13

Strep
beta hemolysis (clear)
bacitracin insensitive
negative PYR

Answer 13

GBS

S. agalactiae

Question 14

Strep
beta hemolysis (clear)
bacitracin sensitive
positive PYR

Answer 14

GAS

S. pyogenes

Question 15

B-BRAS

Answer 15

Bacitracin
group B is resistant
group a is sensitive

Question 16

What kind of hemolysis does S. aureus have

Answer 16

Beta

Question 17

MRSA is resistance because

Answer 17

altered penicillin binding protein

mecA gene from staph chromosomal cassette involved in penicillin resistance

Question 18

Contaminates blood cultures

infects prosthetic devices and IV catheters (biofilms)

Answer 18

S. epidermidis

Question 19

Normal flora of female genital tract and perineum

2nd MCC uncomplicated UTI in young women

Answer 19

S. saprophyticus

Question 20

Pneumococcus can cause

Answer 20

meningitis
otitis media
PNA
sinusitis

Question 21

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

Answer 21

S. sanguinis

Question 22

Subacute endocarditis after GI/GU procedures

Answer 22

Enterococci

Question 23

Labs for enterococcus

Answer 23

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

Question 24

Normal colonic flora that is resistant to penicillin G

Answer 24

Enterococcus

Question 25

Medusa head

Answer 25

Bacillus anthracis

Question 26

Bacteremia and subacute endocarditis associated with colon cancer

Answer 26

Strep bovis

Question 27

Oral/facial abscesses that drain through sinus tracts

often assoc. with dental carries, extraction, maxillofacial trauma

forms yellow sulfur granules

Answer 27

Actinomyces

Question 28

PID with IUDs

Answer 28

Actinomyces

Question 29

Tx Actinomyces with

Answer 29

Penicillin

Question 30

Treat Nocardia with

Answer 30

Bactrim

Question 31

Pulmonary infection in immunocompromised that mimics TB but is PPD negative

cutaneous infections after trauma in immunocompetent

can spread to CNS

Answer 31

Nocardia

Question 32

Nocardia is found in the

Answer 32

soil

Question 33

Actinomyces is found in

Answer 33

normal oral, reproductive, GI flora

Question 34

Gram + that have long, branching filaments resembling fungi

Answer 34

Nocardia

Actinomyces

Question 35

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

Answer 35

Listeria monocytogenes

Question 36

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

Answer 36

listeria monocytogenes

Question 37

Tumbles in broth

Answer 37

Listeria monocytogenes

Question 38

Prophylaxis with azithromycin when CD4+ count <50 in HIV

Answer 38

Mycobacteria avium

Question 39

Hand infection in aquarium handlers

Answer 39

Mycobacteria marinum

Question 40

Cervical lymphadenitis in children

Answer 40

Mycobacterium scrofulaceum