Fig. 3

Aspiration of microbial fluid study. ETTs used in the study are shown on the x-axis and include the results of the 24 h study. a Log of colony forming units aspirated past the cuff for each ETT. b Volume of fluid leaked past the ETT on a logarithmic scale. Results demonstrate that the PneuX ETT was the only tube that prevented aspiration of bacteria in the static, movement and 24 h study. Variability of the results occurred between repeats of the HVLP ETTs