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Flashcards in ID Review Session Deck (45)
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1

What are the 5 lactose-fermenting, Gram-negative rods?

E coli
Klebsiella
Enterobacter

Citrobacter
Arizona (Salm.)

2

Mucoid vs non-muoid lactose-fermenters?

E coli is flat

Klebsiella and Enterobacter are mucoid

3

What color are alpha-hemolytic strep colonies on blood-agar plates?

Green

4

What color are beta-hemolytic strep colonies on blood-agar plates?

Clear the bood

5

What color are gamma-hemolytic strep colonies on blood-agar plates?

no clearing

6

What are the two most important species of Gram-positive rods we need to know about?

Clostridium- large; spores;

Listeria- small; meningitis, spontaneous abortions, diarrhea; often pregnant or immunocompromised

7

What bacteria should pneumonia make you think of?

Strep pneumo
H. influenzae
Moraxella
Mycobacterium tuberculosis
Legionella pneumophila

8

What bacteria should skin/soft tissues make you think of?

Staph aureus
Group A Strep
Group B Strep
Clostridium perfringens

9

What bacteria should enteritis make you think of?

Vibrio cholerae
Enterotoxigenic E coli

10

What bacteria should colitis make you think of?

Shigella
Salmonella
Campylobacter jejuni
C diff

11

What bacteria should endocarditis make you think of?

Strep viridans (subacute)
Enterococcus (subacute)

Staph aureus (acute; IV drug users)
Strep pnuemo

Coag neg staph (prosthetic valves)

12

What bacteria should meningitis make you think of?

Strep pneumo
N. meningitis
Listeria
H influenzae

13

Intraabdominal infections should make you think of which bacteria?

E coli
Klebsiella
Anaerobes (B. fragilis)
Enterococcus

14

Bacterial causes of STDs

N gonorrhea
Chlamydia trachomatis
Treponema pallidum
H. ducreyi

15

HSV (What's the pathogen, is it painful, are lymph nodes involved, does it cause single or multiple lesions, and what's the treatment)?

HSV 1 and 2

Yes, painful

Yes LNs involved

Multiple lesions

Treat with valacyclovir

16

Syphilis (What's the pathogen, is it painful, are lymph nodes involved, does it cause single or multiple lesions, and what's the treatment)?

Treponemia pallidum

No, primary lesion is NOT painful

Yes, non-tender

Single primary chancre

Penicilin

17

Chancroid (What's the pathogen, is it painful, are lymph nodes involved, does it cause single or multiple lesions, and what's the treatment)?

H. ducreyi ("School of fish" on Gram-stain)

Painful

Draining buboes

Multiple (undetermined red borders)

Azithromycin/ ceftriaxone

18

LGV (What's the pathogen, is it painful, are lymph nodes involved, does it cause single or multiple lesions, and what's the treatment)?

Chlamydia trachomatis L1-L3 serotypes

No

Draining, tender, "groove sign"

Single

Doxycycline for 3 weeks

19

Granuloma inguinale (Donovanosis)

(What's the pathogen, is it painful, are lymph nodes involved, does it cause single or multiple lesions, and what's the treatment)?

Klebsiella granulomatis

Not painful

No LN

Single beefy red lesion

Doxy for 3 weeks

20

What's the inflammatory component to the outer membrane in Gram-negative organisms?

LPS (lipopolysaccharide)

21

Are techoic acids seen in Gram-positive or negative organisms or both?

Gram Postitive

22

Non-Gram staining bugs?

Campylobacter (sometimes)
Mycoplasma
Chlamydia
Rickettsia
Spirochetes
Legionella

23

Do we treat people who are colonized without symptoms?

NO!

Exceptions: TB, N. meningitis, syphilis, etc...

24

Signs and symptoms of endocarditis

Fever
Roth spots
Splinter hemorrhages
Kidney/hematuria
Joints
Stroke
Valve failure

25

What are the bugs that cause UTI in young women most commonly?

E coli
Staph saphrophyticus

26

What are the bugs that cause UTI in elderly men most commonly?

E coli
Enterococcus

27

What are the bugs that cause complicated UTIs?

GNRs (E coli, pseudomonas aeruginosa)
Enterococcus (if catheter)
Staph aureus

28

What is the most common cause of inflammatory diarrhea?

Campylobacter

29

Where in the body does inflammatory vs non-inflammatory diarrhea occur?

Inflammatory: colon

Non-inflammatory: small intestine

30

What are the common pathogens that cause inflammatory diarrhea?

Campylobacter
Shigella
Salmonella
+/- EHEC (doesn't cause fever or WBC)
C diff