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Flashcards in DIT Micro G+ Deck (35):
1

Identify strep agalactaie

cat - beta hem bacitracin resistant (also has capsule so quelling)

2

Identify strep pneumo

cat - alpha hemo opti sensitive (also quelling pos b/c casule)

3

identify strep viridans

cat - alpha hem opti r and no capsule

4

Identify enteroccosus

catalase - gamma hemolysis (none) Grows in bile and in Na 6.25% (makes sense it grows in rough places)

5

Anearobic g+ rod?

Clostridium (yeah its anaerobic, that shit C botulinum grows in jarred beans, there is no air in that)

6

G+ rods?

Corynebacterium, listeria, bacillus, mycobacterium

7

G+ branching filament that anaerobic?

actinomyces and not acid fast

8

G+ branching that is acid fast and aerobic?

nocardia

9

MRSA is resistant to methicillin how? What can it cause?

Altered Penicillin binding protein.

Skin infections and abscess and much more!!!

10

What is protein A?

Staph makes it and it binds immunoglobulin

Disrupts opsonization and phagocytosis

11

What makes yellow colonies?
Yellow granules?
Blue green pigment?
Red pigment?

Staph Auereus (aureus means gold)

Actinomyces isrealii (isreal has yellow sand

Pseudomonas aeruginosa Auregeno is green

Serrratia marcescens (marachino cherry is red)

12

When does staph epidermis cause problems? Treatment?

Enters blood stream and hits up the foreign things.

Prosthetic valves and joints

Lots of resistance. Use Vanco+/- rifampin (Q bank)

13

Staph Staph sapro causes what?

Second most common cause of UTI. 10-20% of them and prevalent in sexually active females

14

What is strep pnumo the most common cause of (4 things). How do they describe it on a test?

MOPS

Meningitis
Otitis media
Pneumonia
Sinusitis
Splenectomy: fulminent septicemia

lobar consolidation
Sudden chills
Rust or brown colored sputum

15

S pneumo virulance factors?

Capsule! (SHiN SKiPS)
IgA protease (SHiN)

Strep Pneumo, H influ, Neis m, Salmonella (b/c sickle cell osteomyelitis after autosplenectomy) klebsiella, Psuedomonas Strep Agalactiae

16

What do you use for a prophylaxis if turbulent heart flow problem before dental procedure? What are your dying to make sure you don't get?

Amoxicillin to prevent strep sanguinis from endocarditis. No turbulent flow would cause no problems

17

What causes necrotizing fasciitis?

Strep pyogenes (i guess bacitracin on wounds might be a good idea)

18

What skin infection can staph a and strep pyogenes both cause?

Cellulitis and impetigo?

19

How duo you diagnose rheumatic fever?

Jones criteria.
1. Recent group A strep
2 major criteria or one major and two minor

Joints
<3 pancarditis (endo/peri/myo)
Nodues
Erythema marginatum (can appear and disappear)
Sydenham chorea

Minor: less specific. Just know the top

20

What does group B strep cause? What do docs do about it?

pneumonia, meningitis, and sepsis in babies most often b/c normal flora in 25% of women who are asymptomatic

Do a vaginal swab at 35-37 weeks then give penicillin during labor to protect the neonate

21

What do you consider for neonatal sepsis?

Group B strep
E coli
Listeria

22

What can enterococci cause?

UTI, biliary tract infection and subacute endocarditis after GI procedure.

Hardy bug

23

What is a hardy bacteria?

Enterococci (makes sense b/c it lives in shit)

Grow in 6.5 NaCl and bile
Resistant to pen G
Some are vanco resistant (VRE is vancomycin resistant enterococcus)

24

Enterobacter vs enterococcus?

Enterobacter is G- rod
Enterococcus is G+ rod

25

What do consider if strep bogus causes subacute colon cancer?

Cancer colon!

26

What can cause subacute endocarditis?

Strep viridans (most common)
Enterococci
Strep bovis (colon cancer)
Coag (-) staph
HACEK

Haemophilis a
Actinobacillus
Cardiobacterium
Eikenella
Kingella

27

What toxin is similar to that produced by diphtheria?

Psuedomonas exotoxin A also stops EF-2

(pseudomembrane toxin similar to pseudomonas exotoxin a!)

28

Spore forming G+ rods are obligate anaerobes?

Clostridia

Anthrax
Botulism
Tetanis
Perphringes

29

What does psuedomonas alpha toxin do?

Clostridium. phospholipase that makes GAS GANGRENE and myonecrosis.

Enterotoxin also for food poisoning

30

C diff toxins?

Toxin A is for binding brush border

Toxin B is cytotoxin causing actin depolimerization

31

Bacillus anthraces produces what?

Aerobic G+

Edema factor

Cutaneous
spores under skin to large black escar

32

What are the obligate anaerobes? How do you treat?

Cant Breath Air

Clostridium (G+)
Bacteroides (G-)
Actinomyces (G+)

Metronidazole or clindamicin

33

What is only gram + to make LPS?

Listeria (can cause sepsis)

34

How do you recognize and treat actinomyces?

Usually around face and yellow pus coming out (actinomyces is yellow granules producing!)

Tx is penicillin

35

Nocardia recogniziton and tx?

acid fast and filamentous aerobe

Sulfa