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Table 5 Microorganisms isolated within 30 days from the start date of ertapenem therapy

From: Evaluation of Ertapenem use with Impact Assessment on Extended-Spectrum Beta-Lactamases (ESBL) Production and Gram-Negative resistance in Singapore General Hospital (SGH)

Microorganism* Infection with new microorganism within 30 days of first date of ertapenem use (%) Carbapenem resistance (%)
Pseudomonas aeruginosa 50 (5.5) 25 (2.8)
Stenotrophomonas maltophila 21 (2.3) 21 (2.3)**
Acinetobacter baumannii 27 (3.0) 20 (2.2)
Enterobacteriaceae (such as Klebsiella spp., E. coli, Proteus spp.) with ESBL production 41 (4.5) 8 (0.9)
  1. *More than one microorganism was isolated in some cases within 30 days from initiation of ertapenem therapy.
  2. **Carbapenem sensitivity testing was not performed. However, Stenotrophomonas maltophila is intrinsically resistant to carbapenems.