Abx Spectrum Flashcards
Natural Penicillin gram +
Drug of choice for streptococcus
Most staphylococci are resistant
Most Enterococcus faecalis are sensitive
Most E. faecium are resistant
Natural penicillin anaerobes
peptostreptococcus, priopionibacterium
Natural penicillin gram -
Minimal coverage, only Neisseria meningitidis
Treponema pallium (syphilis)
Penicillinase -resistant penicillins
Gram +
Drug of choice for MSSA Streptococci (Penicillin-Sen)
Penicillinase resistance penicillin
Anaerobes
No coverage except peptostreptococcus
Penicillinase resistance penicillin gram -
No coverage for Enterococcus and Gram -ve
Extended spectrum
Amino penicillin gram +
As with natural penicillin
+ listeria
Extended spectrum amino penicillin anaerobes
As well natural penicillin
Extended spectrum
Amino penicillin
Gram -
Neisseria meningitidis Enterobacteriaceae that don’t produce β- lactamase
Extended spectrum
Anti pseudomonal
As with natural penicillin
Extended spectrum anti pseudomonal anaerobes
As with natural penicillin
Extended spectrum anti pseudomonal
Gram -
As with aminopenicillins & Citrobacter spp., Providencia spp., Enterobacter spp., Morganella spp., Pseudomonas aeruginosa
Example of penicillin w beta lactamase inhibitor
Amoxycillin/clavulanate, Ticarcillin/clavulanate
Ampicillin/sulbactam
Piperacillin/tazobactam
Piperacillin w tazobactam
Ampicillin w sulfobactam
Covers
Piperacillin/ tazobactam covers Pseudomona aeruginosa Ampicillin/ sulbactam covers Acinetobacter baumanni
Penicillin with BLI gram +
As with natural penicillins
In addition S. aureus (similair to penicillase-resistant penicillins, NOT MRSA
Penicillin w BLI anaerobes
Bacteroides spp
Penicillin w BLI gram -
E. coli, Klebsiella spp., Proteus spp.
First gen cephalosporins gram +
Staphylococcus (except MRSA, CoNS)
Streptococcus
No enterococcus
First gen cephalosporins anaerobes
NO COVER ANAEROBES
First gen cephalosporins gram-
Proteus
Escherichia coli
Klebsiella
Not active against H. influenzae and M. catarrhalis
Second gen cephalosporins gram +
Staphylococcus (except MRSA, CoNS)
Streptococcus
No enterococcus
Second gen cephalosporins gram -
Neisseria meningitis
Proteus
Escherichia coli
Klebsiella
H. influenzae
M. catarrhalis
Third gen cephalosporins gram +
Staphylococcus (except MRSA, CoNS)
Streptococcus
No enterococcus
Third gen cephalosporins gram -
As with 2nd generation plus
N. Gonorrhoeae (Ceftriaxone) Pseudomonas (Ceftazidime) Serratia
Citrobacter
Fourth gen cephalosporins gram +
Staphylococcus (except MRSA, CoNS)
Streptococcus
No enterococcus
Fourth gen cephalosporins gram -
Broad Gram –ve coverage
Pseudomonas
Less susceptible to inactivation by AmpC B-lactamases
Fifth gen cephalosporins gram +
Staphylococcus (including MRSA) Streptococcus
Enterococcus fecalis
Fifth gen cephalosporins gram -
Broad Gram –ve coverage Pseudomonas
Carbapenams gram +
Staphylococcus (inc cons)
Streptococcus
No coverage of MRSA
E. fecalis (some)
No coverage of E. faecium
Carbapenams anaerobe
Except C. difficile