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Table 1 Tracheobronchial colonization (log cfu/g) per study group

From: Endotracheal tube biofilm translocation in the lateral Trendelenburg position

     Trachea Main bronchi Segmental bronchi
Pig Group Mechanical ventilation, hours Species 1 2 3 4 5 6 7 8 9 10 11
17 24 h 24
20 24 h 24 P.aeruginosa 2.18 2.74
    E.coli 1.70 2.30
30 24 h 24 Bordetella bronchiseptica 2.90 3.85 5.09
50 24 h 24
18 48 h 48 P.aeruginosa 3.69 3.95 4.62 2.40 2.96
27 48 h 48 Bordetella bronchiseptica 6.19 7.24 7.14 7.37 5.76 5.16 5.99 3.70 3.66
44 48 h 48 P.aeruginosa 2.95
    Bordetella bronchiseptica 3.60 3.86 3.83 3.02
    E.coli 2.88
    Acinetobacter baumanii 3.08
51 48 h 48 P.aeruginosa 4.05
55 48 h 48 Bordetella bronchiseptica 5.56 4.60 5.33 7.12 5.76 4.63 5.72 2.30
34 48-ALI 48 P.aeruginosa 4.68 5.02 6.41 4.24 4.18 3.85
    E.coli 4.08
37 48-ALI 48 P.aeruginosa 1.78
    Acinetobacter lwoffii 2.17
40 48-ALI 48 P.aeruginosa 3.21
52 48-ALI 48 P.aeruginosa 6.86 2.95 5.86 3.76
    E.coli 4.54 2.52
54 48-ALI 18 Bordetella bronchiseptica 3.80 3.12 3.23 3.32 2.18 3.09 3.11 2.40 3.26 2.75
22 72 h 72 P.aeruginosa 4.64
    Bordetella bronchiseptica 6.60 5.30 5.35 5.72 6.40
    Paracoccus yeei 5.60
31 72 h 72
48 72 h 72 P.aeruginosa 1.77
53 72 h 72 P.aeruginosa 4.86 3.45 2.08
    E.coli 4.18 3.79 2.94
  1. Of note, bacterial species concurrently isolated from within the endotracheal tube and the tracheobronchial tree are in bold. P.aeruginosa, Pseudomonas aeruginosa; E.coli, Escherichia coli.