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Table 2 Pathogens associated with ventilator-associated pneumonia

From: Impact of Gram stain results on initial treatment selection in patients with ventilator-associated pneumonia: a retrospective analysis of two treatment algorithms

Pathogen Number of patients (%)
Gram-positive bacteria 103 (78.6%)
Staphylococcus aureus 59 (45.0%)
  MRSA 20 (15.3%)
Streptococcus pneumonia 4 (3.1%)
 Other streptococci 44 (33.6%)
Corynebacterium sp. 15 (11.5%)
Gram-negative bacteria 75 (57.3%)
Klebsiella sp. 15 (11.5%)
Haemophilus influenza 14 (10.7%)
Enterobacter sp. 11 (8.4%)
Escherichia coli 10 (7.6%)
Citrobacter sp. 5 (3.8%)
 ESBL-producing enterobacteriaceae 2 (1.5%)
 AmpC-producing enterobacteriaceae 1 (0.8%)
Pseudomonas aeruginosa 24 (18.3%)
Acinetobacter baumannii 2 (1.5%)
Serratia marcescens 2 (1.5%)
Stenotrophomonas maltophilia 1 (0.8%)
 Other Gram-negative bacteria 4 (3.1%)
  1. ESBL extended spectrum beta-lactamase, MRSA methicillin-resistant Staphylococcus aureus