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Unit 6: Pathology > Gram + cocci > Flashcards

Flashcards in Gram + cocci Deck (14):
1

What is the bacteriology of S aureus

gram + cocci
grows in clumps
catalase +, coagulase +
B hemolytic

2

What is the reservoir and transmission of S aureus?

reservoir: nose
transmission: direct contact, contaminated food

3

S aureus is the most common cause of what type of infections?

suppurative infections of the skin, joints and bone

4

Name the infection and the cause "sunburn like rash that begins on face and spreads over the body - bullae form and desquamation occurs"

scalded skin syndrome
exotoxin of S aureus

5

Where does osteomyelitis with S aureus tend to affect:
kids
adults

kids - long bones of boys
adults - vertebrae

6

What is the patient population that gets endocarditis with S aureus?

IV drug users

7

Name some other infections with S aureus besides those that we already mentioned: scalded skin, osteomyelitis, endocarditis, suppurative skin infections

-bacterial arthritis - very common
-TSS - menstruating women
-acute food poisoning - preformed toxin
-impetigo
-pneumonia - post-flu, salmon colored sputum

8

Bacteriology of strep A

gram + cocci in chains
catalase (-). coagulase (-)
B hemolytic

9

Reservoir of strep A

skin and oropharynx

10

Name some suppurative infections strep A causes

1. pharyngitis
2. scarlet fever
3. erysipelas - epidermis and dermis
4. impetigo - intraepidermial
5. cellulitis - deep dermis
6. myositis

11

What are the two nonsuppurative infections that strep A causes? what specifically causes them?

rheumatic fever type II HSR - antibodies cross react with protein O

acute post strep GN - type III HSR - deposits of immune complexes

12

Strep pneumoniae is a major cause of what infections?

1. lobar pneumonia
2. ottitis media
3. sinusitis
4. meningitis

13

What is the reservoir for S pneumoniae?

oropharynx

14

What are the encapsulated organisms?

Some Killers Have Pretty Nice Capsules
S pneum
klebsiella
H flu
Pseudomonas aerigona,
neisseria meningitis
Crypto