Table 1.

Antibiotic susceptibilities of 100 carbapenem-resistant Klebsiella spp. isolates.

Antibiotic	MIC50 (µg/mL)	MIC90 (µg /mL)	Range (µg/mL)	%S
Ertapenem	≥32	≥32	1 - ≥32	0
Imipenem	16	≥32	0.5 - ≥32	8.1
Meropenem	≥32	≥32	0.5 - ≥32	6.6
Doripenem	16	≥32	0.5 - ≥32	5.1
Amikacin	4	≥128	≤1 - ≥128	75.7
Aztreonam	≥128	≥128	≤0.5 - ≥128	2.9
Cefepime	≥64	≥64	≤1 - ≥64	2.2
Levofloxacin	16	≥64	≤ 0.25 - ≥64	34.6
Piperacillin/tazobactam	≥256	≥256	8 - ≥256	1.5
Polymyxin B	1	16	≤0.25 - ≥32	83.1
Tigecycline	1	4	≤0.25 - 16	82.4