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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.