Gram Positive Bacteria

Question 0

Catalase positive, cougulase negative, novo biotin sensitive

Answer 0

Staphylococcus epidermidis

Question 1

Catalase positive, coagulase positive

Answer 1

Staphylococcus aureus

Question 2

Catalase positive, coagulase negative, novobiocin resistant

Answer 2

Staphylococcus saprophyticus

Question 3

Most common cause of acute endocarditis in native valve

IV drug user

Answer 3

Staph aureus

Question 4

Toxins:

SSS (Ritter’s dse)/ TSS

Answer 4

Exfoliatin/TSST1

*TSS- no site of pyogenic infection

Question 5

Strawberry tongue seen in

Answer 5

TSS
Scarlet fever
Kawasaki dse

Question 6

DOC for MSSA vs MRSA vs VRSA

Answer 6

Nafcillin, Oxacillin, dicloxacillin /
Vancomycin /
Linezolid

Question 7

Cephalosporins not effective against

Answer 7

MRSA
Enterococci
Listeria monocytogenes

Question 8

MCC of prosthetic valve endocarditis and ventriculoperitoneal shunt infection

Answer 8

Staphylococcus epidermidis (glycocalyx forming biofilm)

Question 9

DOC for Staph epidermidis

Answer 9

Vancomycin

Question 10

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

Answer 10

Staph saprophyticus

TMP-SMX, quinolones

Question 11

Catalase neg, alpha hemolytic, bile-optochin- sensitive

Answer 11

Streptococcus pneumoniae

Question 12

Catalase neg, alpha hemolytic, bile-optochin-resistant

Answer 12

viridans Streptococcus

Question 13

Catalase neg, beta hemolytic, bacitracin sensitive

Answer 13

Streptococcus pyogenes

Question 14

Catalase neg, beta hemolytic, bacitracin resistant

Answer 14

Streptococcus agalactiae

Question 15

Catalase neg, gamma hemolytic

Answer 15

Group D Streptococcus

Question 16

PYR test positive

Answer 16

Strep pyogenes

Group D strep

Question 17

Toxins: toxic shock (strep)/necrotizing fasciitis

Answer 17

Pyogenic exotoxin A/ exotoxin B

Question 18

Skin infection caused by strep pyogenes

NICE

Answer 18

Necrotizing fasciitis
Impetigo contamgiosa
Cellulitis
Erysipelas

Question 19

JONES criteria for RH

Answer 19

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

Question 20

DOC for strep pyogenes

Answer 20

Pen G

Question 21

MCC neonatal sepsis, pneumonia, meningitis

Answer 21

Strep agalactiae

Question 22

Screening for GBS/chemoprophylaxis/DOC

Answer 22

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

Question 23

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

Answer 23

E. faecalis/ S. bovis

Question 24

Positive Quellung reaction (post capsular swelling) Some Killers Have Pretty Nice and Shiny Bodies

Answer 24

``` Strep pneumoniae Klebsiella Haemophilus influenza Pseudomonas aeruginosa Neisseria gonorrhea Salmonella typhi B group strep ```

Question 25

MCC: CAP, adult meningitis Prevention

Answer 25

Strep pneumoniae Polysaccharide vaccine, conjugated vaccine (+diphtheria toxoid)

Question 26

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

Answer 26

S. mutans/ S. sanguis/ S. intermedius

Question 27

Motility: | Tumbling/swarming/shooting star/ falling leaf

Answer 27

Listeria monocytogenes/ Proteus mirabilis/ Vibrio cholera/ Gardia lambda

Question 28

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

Answer 28

B. anthracis

Question 29

Aerobic, motile, reheated fried rice

Answer 29

B. cereus

Question 30

Anaerobic, tennis racket like

Answer 30

Clostridium tetani

Question 31

Anaerobic, bulging cans

Answer 31

Clostridium botulinum

Question 32

Anaerobic, lecithinase, gas forming, gas gangrene

Answer 32

Clostridium perfringens

Question 33

Anaerobic, pseudomembranes

Answer 33

Clostridium difficile

Question 34

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

Answer 34

Corynebacterium diphtheria

Question 35

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

Answer 35

Listeria monocytogenes

Question 36

MCC death:pulmonary hemorrhage

Answer 36

Inhalational anthrax Congenital syphilis Weil's syndrome

Question 37

DOC for B. anthracis

Answer 37

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

Question 38

Spastic vs flaccid paralysis

Answer 38

C. Tetani vs. C. Botulinum

Question 39

Triad of botulism

Answer 39

Symmetric descending flaccid paralysis with diplopia, dysphonia, dysarthria, dysphagia Absence of fever Intact sensorium

Question 40

Etiology: Pseudomembranous enterocolitis

Answer 40

Clostridium difficile Clindamycin, cephalosporin, ampicillin DOC: metronidazole, vancomycin

Question 41

Beta prophage encoded toxin ABCDE

Answer 41

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