Table 2 Microorganisms associated with ventilator associated tracheobronchitis

Microorganisms, n

20

118

Polymicrobial VAT

3 (17)

13 (7)

MDR bacteria

8 (47)

37 (35)

Gram-negative

17 (100)

91 (86)

  Pseudomonas aeruginosa

4 (23)^a

38 (36)^a

  Enterobacter species

2 (11)^b

10 (9)^b

  Escherichia coli

1 (5)

5 (4)^c

  Proteus mirabilis

0 (0)

3 (2)

  Citrobacter freundii

1 (5)

3 (2)

  Acinetobacter baumannii

4 (23)

10 (9)

  Morganella morgani

0 (0)

5 (4)

  Hemophilus influenzae

1 (5)

2 (1)

  Stenotrophomonas maltophilia

0 (0)

4 (3)

  Klebsiella oxytoca

4 (23)^d

9 (8)^d

  Serratia species

0 (0)

2 (1)

Gram-positive

3 (17)

27 (25)

  Methicillin-resistant S. aureus

1 (5)

11 (10)

  Methicillin-sensitive S. aureus

1 (5)

12 (11)

  Streptococcus pneumoniae

1 (5)

4 (3)