A-29
Appendices: Organism/Antibiotic Chart
Developed by LTC Glenn Wortmann, MC, USA, LTC Duane Hospenthal, MC, USA & LCDR (sel) Edward
Moldenhauer, MSC, USN
Infecting Organism Medication of Choice Alternatives
I. AEROBIC BACTERIA
A. Gram-positive Cocci
- Staphylococi
a. S. aureus (methicillin-sensitive) PRP, Cephalosporin Vanocomycin, Clindamycin,
(1st generation) Sulfa-trimethaprim
b. S. aureus (methicillin-resistant) Vancomycin Clindamycin, Sulfa-trimethoprim,
Linezolid, Quinupristin-dalfopristin
c. S. epidermidis Vancomycin Linezolid, Quinupristin-dalfopristin - Streptococci
a. Streptoccocus, Group A, B, C, G, Penicillin G or V Cephalosporin (1st generation),
S. viridans and penicillin-sensitive Vancomycin, Clindamycin,
S. pneumoniae Erythromycin, Azithromycin
b. S. pneumoniae with high level Vancomycin Levofloxacin
penicillin-resistance
c. Enterococci Ampicillin and Gentamicin Vancomycin and Gentamicin
B. Gram-positive Bacilli
- Bacillus anthracis Penicillin or Ciprofloxacin Doxycycline
- Corynebacterium diphtheriae Erythromycin and Antitoxin Clindamycin, Penicillin G
- Listeria monocytogenes Ampicillin or Penicillin Sulfa-trimethoprim
C. Gram-negative Cocci
- Neisseria gonorrhoeae Ceftriaxone or Cefixime
Fluoroquinolone - Neisseria meningitidis Penicillin G or V Ceftriaxone
- Moraxella catarrhalis Sulfa-trimethoprim, Azithromycin, doxycycline
Amoxicillin-clavulanate
D. Gram-negative Bacilli
- Escherichia coli Sulfa-trimethoprim Cephalosporin (3rd generation),
(if sensitive) fluoroquinolone - Enterobacter species Imipenem Fluoroquinolone, Cephalosporin
(3rd generation) - Klebsiella species Imipenem Fluoroquinolone, Cephalosporin
(3rd generation) - Pseudomonas aeruginosa APP Ceftazidime
- Proteus species APP Cephalosporin (3rd generation),
fluoroquinolone - Serratia marcescens Cephalosporin (3rd Imipenem, Fluoroquinolone
generation) - Salmonella typhi Ceftriaxone or Sulfa-trimethoprim
fluoroquinolone - Haemophilus influenzae Ceftriaxone or Azithromycin, doxycycline,
fluoroquinolone Amoxacillin-clavulanic acid - Haemophilus ducreyi Ceftriaxone or Amoxicillin-clavulanic acid, Azithromycin,
fluoroquinolone Erythromycin