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Table 5 Microbial isolation from positive endotracheal tube tip cultures

From: Biofilm formation on three different endotracheal tubes: a prospective clinical trial

Organism

PVC tube (n = 14)

SC tube (n = 13)

NbMC tube (n = 22)

All tubes (n = 49)

Gram-positive bacteria

Staphylococcus aureus

2 (11)

2 (13)

1 (3.7)

5 (8.2)

Enterococcus faecalis

3 (16)

 

2 (7.4)

5 (8.2)

Enterococcus faecium

1 (5.6)

1 (6.2)

 

2 (3.3)

Staphylococcus epidermidis

 

1 (6.3)

 

1 (1.6)

Gram-negative bacteria

Pseudomonas aeruginosa

1 (5.6)

 

3 (11)

4 (6.6)

Stenotrophomonas maltophilia

  

4 (15)

4 (6.6)

Klebsiella species

 

1 (6.2)

1 (3.7)

2 (3.3)

Chryseobacterium indologenes

  

2 (7.4)

2 (3.3)

Escherichia coli

 

1 (6.2)

 

1 (1.6)

Serratia marcescens

1 (5.6)

  

1 (1.6)

Acinetobacter species

 

1 (6.2)

 

1 (1.6)

Citrobacter freundii

  

1 (3.7)

1 (1.6)

Yeast

Candida spp.

9 (50)

9 (56)

13 (48)

31 (51)

Candida albicans

8 (44)

7 (44)

9 (33)

24 (39)

 Other yeasts

1 (5.6)

  

1 (1.6)

Total number of microorganisms cultured from ETTs

18 (100)

16 (100)

27 (100)

61 (100)

  1. Data are presented as number (percentage). Approximately 20% of all endotracheal tube tips were polymicrobial. Abbreviations: PVC polyvinyl-chloride, SC silicone-coated, NbMC noble-metal-coated