Figure 2.

Characterization of P. aeruginosa growth on polyvinyl chloride endotracheal tubes over a 144-hour period. Comparison of standard and silver only coated endotracheal tubes. There was less P. aeruginosa growth on silver-coated endotracheal tubes at 24 hours (P < 0.01), but more growth at 120 hours (P = 0.04) and 144 hours (P = 0.06) compared to standard endotracheal tubes.

Notes: Mean ± standard error of mean, *P < 0.05 compared to standard endotracheal tube. N = 4.

Abbreviation: CFU, colony-forming units.