Table 3

Reliable coverage of antimicrobials used in the treatment of urinary tract infections of commonly encountered pathogens

Antimicrobial or antimicrobial class

Gram positive pathogens

Gram negative pathogens

Amoxicillin/ampicillin streptococcus

enterococci
E. coli

P. mirabilis
Amoxicillin/clavulanate

Ampicillin/sulbactam
streptococcus

staphylococcus (not MRSA)

enterococci
E. coli, P. mirabilis,

H. influenzae, Klebsiella spp.
Antistaphyloccal penicillins streptococcus

staphylococcus (not MRSA)
none
Antipseudomonal penicillins streptococcus

enterococci
most including P.aeruginosa
1st generation cephalosporins streptococcus

staphylococcus (not MRSA)
E. coli, P. mirabilis, Klebsiella spp.
2nd generation cephalosporins
(cefamandole, cefuroxime, cefaclor)
streptococcus

staphylococcus (not MRSA)
E. coli, P. mirabilis,

H. influenzae, Klebsiella spp.
2nd generation cephalosporins
(cefoxitin, cefotetan)
streptococcus

E. coli, Proteus spp. (incl. indole+),

H. influenzae, Klebsiella spp.


3rd generation cephalosporins
streptococcus most ceftazidime, cefoperazone - P. aeruginosa


Aztreonam
none most including P. aeruginosa


Aminoglycosides
staphylococcus (urine) most including P. aeruginosa


Fluoroquinolones
none most including P. aeruginosa
Nitrofurantoin

staphylococcus (not MRSA)

enterococci
many Enterobacteriaceae (not Providencia, Serratia, Acinetobacter), Klebsiella spp.
Trimethoprim/sulfamethoxazole

streptococcus

staphylococcus
most Enterobacteriaceae
(not P. aeruginosa)


Vancomycin
all including MRSA none

(Courtesy of Cambell's Urology 7th edition, with the permission of W.B. Saunders)


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