Microbiology Flashcards
(30 cards)
What is the classic presentation of CMV, and who does it affect?
Owl eye. Presents with eye issues, diarrhoea, back pain. Can cause opportunistic infections in HIV patients
What should be used to treat UTIs/e.coli in pregnant women?
Nitrofurantoin
What is the presentation of EBV and it’s colloquial name?
- ‘mono’
- extreme fatigue, fever, sore throat, swollen lymph nodes, hepatosplenomegaly
What is the tx immediately for a non blanching purpura rash?
Benzylpenicillin.
cefotaxime in hospital
How do you differentiate between staphylococcus and streptococcus?
Catalase test
What is the apperance of neisseria meningitidis?
gram negative diplococci
What is the presentation of streptococcus pneumoniae?
gram positive diplococci
What colour are gram pos/neg on stains?
pos: purple, neg: pink
What bacteria are gram pos cocci clusters?
staph
What bacteria are gram pos cocci chains?
streptococcus
What identifies s.aureus?
coagulase
what differentiates beta and alpha streptococcus?
haemolysis on blood agar
What is a beta strep cocci
s.pyogenes
What is a alpha strep (and the test to differentiate them)
- s. pneumoniae
- s. viridans
- optochin test
What is the macconkey agar?
differentiate lactose and non lactose fermenting gram neg
What colour are each result of the macConkey agar?
- pink: fermenting
- white: non fermenting
What test differentiates non fermenting gram neg?
oxidase test
What are oxidase test positive bacteria?
pseudomonas
What are oxidase neg gram neg?
salmonella, shigella, proteus
What is a unique way that legionella is tested for?
urine sample
What is blood agar used for?
culturing anaerobes
What is charcoal agar used for?
campylobacter jejuni
What is chocolate agar used for?
anaerobes
What antibiotics inhibit cell wall synthesis
- penicillins
- carbapenems
- glycopeptides: vancomycin
- cephlasporin
