University of Pennsylvania Medical Center Guidelines for Antibiotic Use

Antimicrobial Susceptibilities of Obligately Anaerobic Bacteria Performed 3/04 on Bacterial Isolates Collected from 2000 to 2003

% Susceptible - Etest, NCCLS M11-A4 guidelines

Bacterium No. Tested Pen G A/C Metro Clinda Vanco
 Breakpoint    <1 <16/8 <16 <4 <2
B. fragilis 25 NT* 92 100 68 NT*
Clostridium 22 100 100 100 61 NT
Gram-pos cocci (Peptostreptococcus) 21 95 NT NT* 100 100
Pigmented Gram-neg rods (Prevotella, Porphyromonas) 13 NT* 100 100 77 NT*
Fusobacterium 16 94 100 100 94 NT*
P. acnes 25 100 NT NT* 100 100
Veillonella 11 27 100 100 100 NT*

Pen G - Penicillin G, A/C - Amoxicillin/clavulanate, Metro - Metronidazole, Clinda - Clindamycin, NT - not tested, * - resistance common to this drug for this bacterium

 

Back to Table of Contents