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Table 1 Susceptibility of S. maltophilia obtained by the three methods studied (N = 52)

From: The antimicrobial susceptibility of Stenotrophomonas maltophilia isolates using three different methods and their genetic relatedness

  Percentage susceptibility* Agar MIC (mg/L)
Agent Disc diffusion E Test Agar dilution (MIC breakpoint) MIC50 MIC90 MIC Range
Ceftazidime 67.3 63.5 50.0 (≤ 8 mg/L) 8 256 0.25->256
Cefepime 30.8 42.3 34.6 (≤ 8 mg/L) 16 64 1–64
Piperacillin 34.6 15.4 26.9 (≤ 16 mg/L) 64 256 1->256
PTZ 61.5 46.2 42.3 (≤ 16/4 mg/L) 32/4 128/4 4/4->256/4
TLc 84.6 90.4 73.1 (≤ 16/2 mg/L) 8/2 64/2 0.5/2->256/2
Ciprofloxacin 92.3 92.3 53.8 (≤ 1 mg/L) 1 4 0.5–16
SXT 98.1 98.1 98.1 (≤ 2/38 mg/L) 0.5/9.5 1/19 0.125/2.375- 128/2432
  1. PTZ: Piperacillin/tazobactam, TLc: Ticarcillin/clavulanate, SXT: Trimethoprim/sulfamethoxazol