How Much PEEP Does High Flow Deliver via Tracheostomy? A Literature Review and Benchtop Experiment

Table 3

Descriptive statistics comparing flows.

Flow	40 L/min	50 L/min	60 L/min
No. of observations	20	20	20
Mean pPEEP (cmH2O)	0.295	0.545	0.898
Median (IQR) (cmH2O)	0.3 (0.213–0.35)	0.58 (0.5–0.6)	0.88 (0.763–1.0)
Mode (cmH2O)	0.350	0.6	0.9
Standard deviation (cmH2O)	0.069	0.094	0.172
Standard error of mean (cmH2O)	0.015	0.021	0.038