Measured values of a) inspiratory volume, b) PEEP, c) FIO2 and d) respiratory rate delivered to a test lung by several devices in four intensive care units grouped by ventilator model. Measured values of a) inspiratory volume, b) PEEP, c) FIO2 and d) respiratory rate delivered to a test lung by several devices in four intensive care units grouped by ventilator model. EVITA4: Draeger Evita 4 (25 machines); SERVOI: Siemens/Maquet Servo I (16 machines); SVC900C: Siemens SV900C (12 machines); SERVO300: Siemens/Maquet Servo 300 (seven machines); EVITAXL: Draeger Evita XL (three machines); SV900D: Siemens SV900D (one machine); EVITA2: Draeger Evita 2 (one machine) and ENGSTROM: GE Engstrom (one machine). Reproduced and modified from [17] with permission from the publisher. Raffaele L. Dellaca’ et al. Breathe 2017;13:84-98 ©2017 by European Respiratory Society