Fig. 2
From: Data automated bag breathing unit for COVID-19 ventilator shortages
Bench testing results with the lung simulator. A Cardone motors test at VT of 800 mL and RR of 50 bpm for 32 days. B Tidal volume consistency of the AMBU Spur II bag (n = 7) operating continuously for 7 days. C Tidal volume delivery measured at varying compliances (0.02, 0.04, 0.07 L/cm H2O) for 3 tidal volumes of 200, 400 and 800 mL, and 1 s for TI. D Tidal volume performance as a function of changing inspiratory time at a fixed compliance of 0.02 L/cm H2O at a delivered tidal volume of 800 mL. E PEEP and PIP values during 7 days of continuous operation (VT—800 mL, respiratory rate—50 bpm. F Changes in FiO2 with increase in minutes ventilation rate (VT—400 mL)