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viridans vs penicillin
- penicillin.
- pcn works great on viridans
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strep pyogenes vs bacitracin
bacitracin. 99% sensitive to it.
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strep pyogenes vs penicillin
penicillin. very sensitive to penicillin.
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staph aureus vs penicillin G
STAPH AUREUS HAS A PENICILLINASE
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gram negative vs semi-synthetic penicillins (Methicillin)
NO. semisynthetic penicillins are NOT active against gram negative
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anaerobes vs penicillin G
good activity against oral anaerobes.
not good for B frag or intra-abdominal infex
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gram negative vs aminopenicillins
yes. good activity against H flu, E coli, Proteus mirabilis
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klebsiella, serratia, acinetobacter, pseudomonas, b frag vs aminopenicillins
NO. THESE ARE RESISTANT TO AMINOPENICILLINS
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gram positive vs aminopenicillin
yes, gram positive activity
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gram positive vs penicillin G (specific gram positives: strep pneumoniae, strep pyogenes A, strep agalactiae B, viridans
yes. works against all those. excellent for viridans.
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viridans vs penicillin G
penicillin G is excellent against viridans
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therapy for coagulase-negative staph infections
- vancomycin
- oh yeah, and remove the dirty cath
(majority of these bugs are resistant to all beta-lactam agents)
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therapy for healthcare-acquired MRSA staph infections (HA-MRSA)
- vancomycin
- daptomycin
- linezolid
- quinupristin-dalfopristin
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therapy for community-acquired MRSA staph infection (CA-MRSA)
TMP-SMX, clindamycin, doxycycline, minocycline, linezolid (for minor/moderate)
for severe, use vancomycin
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therapy for VISA or VRSA staph infection
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therapy for MSSA staph infection
- oxacillin
- nafcillin
- 1st or 2nd generation cephalosporins
- vancomycin
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