Table 4 Microbial isolation from surveillance cultures in the three study groups
From: Biofilm formation on three different endotracheal tubes: a prospective clinical trial
| Â | OPC | OPC-ETT match | ETA | ETA-ETT match |
|---|---|---|---|---|
Total number of different microorganisms isolated | 150 (100) | 51 (100) | 133 (100) | 51 (100) |
Microorganism | ||||
Gram-positive bacteria | ||||
Enterococcus faecalis | 15 (10) | 4 (7.8) | 10 (7.5) | 4 (7.8) |
Enterococcus faecium | 13 (8.6) | 2 (3.9) | 5 (3.9) | 1 (2.0) |
Staphylococcus aureus | 9 (6.0) | 3 (5.9) | 15 (11) | 4 (7.8) |
Staphylococcus epidermitis | 2 (1.3) | 1 (2.0) | 2 (1.5) | Â |
  Beta hemolytic streptococcus group A | 1 (0.7) |  | 1 (0.7) |  |
Streptococcus pneumoniae | Â | Â | 1 (0.7) | Â |
Gram-negative bacteria | ||||
Klebsiella species | 9 (6.0) | 1 (2.0) | 4 (3.1) | 2 (3.9) |
Stenotrophomonas maltophilia | 8 (5.2) | 4 (7.8) | 7 (5.3) | 4 (7.8) |
Pseudomonas aeruginosa | 6 (4.0) | 4 (7.8) | 5 (3.9) | 4 (7.8) |
Haemophilus influenzae | 4 (2.7) | Â | 5 (3.9) | Â |
Enterobacter cloacae | 2 (1.3) | Â | 2 (1.5) | Â |
Serratia marcescens | 3 (2.0) | 1 (2.0) | 1 (0.7) | 1 (2.0) |
Escherichia coli* | 4 (2.7) | 1 (2.0) | 2 (1.5) | Â |
Citrobacter freundii | 2 (1.3) | 1 (2.0) | 1 (0.7) | 1 (2.0) |
Chryseobacterium indologenes | 2 (1.3) | 2 (3.9) | 3 (2.3) | 2 (3.9) |
Acinetobacter sp. | 1 (0.7) | Â | 1 (0.7) | Â |
Other bacterial species | 5 (3.4) | Â | 8 (6.2) | Â |
Yeast | ||||
Candida species | 60 (40) | 27 (53) | 52 (39) | 27 (53) |
Candida albicans | 41 (27) | 21 (41) | 37 (28) | 21 (41) |
Candida dubliniensis | 8 (5.3) | 1 (2.0) | 6 (4.5) | 1 (2.0) |
Candida parapsilosis | 2 (1.3) | 1 (2.0) | 2 (1.5) | 1 (2.0) |
Candida tropicalis | 2 (1.3) | 1 (2.0) | 2 (1.5) | 1 (2.0) |
   Other candida species | 7 (4.7) | 3 (5.9) | 5 (3.9) | 3 (5.9) |
  Other yeasts, not candida | 4 (2.7) |  | 8 (6.0) | 1 (2.0) |