Upper Respiratory Pathogens I Flashcards
(47 cards)
Where does bacteria end up in the URT
trachea or terminal airway
Where do viruses end up in the URT
terminal airway and alveoli
Sterile URT tissues
Mastoid air cells
Describe the sterility of the conjuctiva
It’s supposed to be sterile but because of its location it’s exposed to many organisms
Normal flora of the nose
staphylococcus epidermis
Clinical relevance of staph aureus
about 20% of people have this in normal population
staph. epidermis features
gram positive cocci clusters
staph aureus features
grame positive cocci clusters
corynebacterium spp. features
gram positive rod
nasopharynx normal flora
streptococcus
bacteria in strep viridans group
s. mutans, s. mitis, s/milleri, s/ salivarius
What bacteria are more common in the cooler months of the year
s. pneumoniae
haemophilus influenzae
neisseria menigitis
Group A streptococcus
s. pyogenes
Group B streptococcus
s. agalactiae
Group D streptococcus
s. bovis
enteroccocus faecalis
What streptococcus are alpha hemolytic
s. pneumoniae
viridans streptococci
What streptococcus are beta hemolytic
s. pyogenes
s. agactiae
What streptococcus are gamma hemolytic
s. bovis
What does alpha hemolysis mean
partial hemolysis of blood
gives green coloration
What does beta hemolysis mean
complete hemolysis around colonies
clear zone around colonies
What does gamma hemolysis mean
no hemolysis takes place
features of strep. viridans
grame positive cocci chains
moraxella catarrhalis features
gram negative diploid-coccobacillus
Bacteroides features
strict anaerobe
