AH and NH strep Flashcards
What causes alpha hemolysis?
H2O2 production => damages RBCs
Bacteria normally found in soil, plants, water, food, other animals, GIT, oral cavity, skin
Enterococci
Antimicrobials unsuitable for treating enterococcal infection due to intrinsic R
- Cephalosporins
- Clindamycin
- SxT
Bacteria normally found in mouth, URT, GR, female genital tract, transient colonizer on skin?
Viridans group of streptococci
Which small colony group may be alpha/beta/gamma and may group with ACFG or not?
S. anginosus
S. pneumo colonizes the ________ and is a normal flora from a ______ swab
Nasopharynx; throat swab
Synergistic therapy to treat serious enterococcal infection?
Cell wall active antimicrobial + aminoglycoside
Ampicillin/vancomycin + gentamicin
Strep pneumo TxP and bile solubility expected results?
TxP = S Bile = POS (soluble)
3 of the most common infections due to S. pneumoniae?
- Pneumonia
- Conjunctivitis
- Otis media
Significance of isolating S. bovis group from blood?
Indicates bacteremia, septicemia, endocarditis
Healthy heart/valves infection caused by?
S. aureus septicemia
Group D strep is also known as?
Streptococcus bovis group
Prosthetic heart valves infection caused by?
CoNS septicemia in addition to S. aureus (biofilms)
BEA+
PYR-
6.5% NaCl: NG
S. bovis
Bacteria normally found in pharynx, GIT, urethra, vagina, cervix
S. agalactiae
Why is high-level aminoglycoside testing included for AST in cases of serious enterococcal infections?
to predict the usefulness of synergistic combination treatment
Damaged heart/valves and intermittent shedding infection caused by?
Viridans group SBE
Group that may be AH to AH’ and gpc tetrads especially from broth
Aerococcus
Bacteria normally found in nasopharynx and upper respiratory pathway colonizer
S. pneumoniae
