Streptoccoci Viridans

Question 1

all streptococci are what gram?

Answer 1

positive

Question 2

all streptococci are catalase negative or positive?

Answer 2

negative

Question 3

streptococci viridans is alpha, beta or gamma hemolytic?

Answer 3

alpha hemolytic

Question 4

where can strep. viridans be found normally in the body?

Answer 4

in the oropharynx

Question 5

is strep viridans bile soluble?

Answer 5

no

Question 6

what two characteristics differentiate strep viridans from strep pneumoniae?

Answer 6

optochin resistant

not bile soluble

Question 7

how does strep viridans look under the mircroscope?

Answer 7

chains

Question 8

What is an example of strep viridans?

where do we find it?

Answer 8

strep mutans

we find it in the mouth, and is responsible for caries and dental plaque by producing acid

Question 9

strep viridans is the most common cause of what?

Answer 9

subacute endocarditis

Question 10

what is the treatment for strep viridans caused subacute endocarditis?

Answer 10

penicillin G and aminoglycoside

Question 11

how can strep viridans be prevented?

Answer 11

through prophylactic antibiotics during dental work with patients with previous damage to the heart valves

Question 12

what bacteria can be found in the throat?

Answer 12

strep viridans

strep pneumoniae

nontypeable haemophilus influenza