Bugs and Drugs Flashcards
Staphylococcus aureus, penicillin sensitive (unusual)
penicillin
staphylococcus aureus
oxacillin, nafcillin, dicloxacillin
MRSA
vancomycin
MRSA/VRSA
daptomycin, linezolid, ceftaroline
Group A strep
penicillin, amoxacillin
Group A strep, penicillin allergy
macrolide or 1st gen cephalosporin (cephalexin, cefazolin)
Group B strep
penicillin, ampicillin
Strep pneumoniae
penicillin
strep pneumoniae, intermediate resistance
3rd generation cephalosporin (caftriaxone, cefotaxime)
strep pneumoniae, high resistance
vancomycin, 3rd gen quinolones (levofloxacin)
enterococcus
penicillin or ampicillin
enterococcus, penicillin resistant
vancomycin
enterococcus endocarditis
penicillin/vancomycin + gentamicin
enterococcus uniformly resistant to
cephalosporins
resistant gram positive cocci (VRE, VSRA)
linezolid, daptomycin, dalfopristin, quinupristin (streptogramins)
streptogramin exception
enterococcus faecium, but not faecalis
anaerobes
metronidazole, 2nd gen cephalosporins (cefoxitin, cefotetan), extended spectrum penicillins (piperacillin-tazobactam)
clostridium
vancomycin
C. dif
metronidazole or oral vancomycin
enterobacteriaceae (e.coli, klebsiella, enterobacter)
3rd gen cephalosporin (ceftriaxone, cefotaxime), quinolones (cipro-, levofloxacin), aminoglycosides, carbepenems, extended spectrum penicillin, aztreonam
pseudomonas
Ex-spec penicillins, quinolones, aminoglycosides, carbapenems, ceftazidime, cefepine (4th gen cephalo)
rickettsia/ehrlichia/borrelia burgdorferi
doxycycline (also amoxicillin, ceftriaxone for borrelia)
gonorrhea
ceftriaxone, cefotaxime, cefpodoxime
syphilis
penicillin
syphilis with penicillin allergy, nondesensitized (not pregnant, e.g.)
doxycycline
chlamydia trachomatis
azithromycin, doxycycline
atypical pneumonia: mycoplasma, legionella, chlamydia, bordetella
macrolides/azalides, quinolones, +/- tetracycline
empiric treatment for community acquired pneumonia
ceftriaxone and azithromycin (both), or levofloxacin