Figure 4.

Characterization of P. aeruginosa growth on polyvinyl chloride endotracheal tubes coated with titanium dioxide with silver over a 144-hour period. Comparison of standard, solgel titanium dioxide with silver, and Degussa titanium dioxide with silver endotracheal tubes. P. aeruginosa growth was inhibited significantly by solgel titanium dioxide with silver at 24 hours and by Degussa titanium dioxide with silver at 24 and 48 hours, respectively.

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

Abbreviation: CFU, colony-forming units.