Figure 8. VT and Paw for 5 models of manual resuscitator devices in a 'normal' patient model with resistance = 5 cmH2O.L-1.s-1 and compliance = 50 ml.cmH2O-1 at trial start, after 1 week, 30 days, and 45 days of continuous use. Error bars lie within the column. Ordinary one-way ANOVA P = 0.0001 for Rüsch BVM.