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. 2022 Mar 11;224(1):569–575. doi: 10.1016/j.amjsurg.2022.02.064

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Fig. 2 — a. (top left) shows a high resolution airway pressure over time tracing for two delivered breaths. b. (top right) shows a high resolution airway flow over time tracing for two delivered breaths. C. (bottom left) shows a high resolution airway volume over time tracing for two delivered breaths. d. (bottom right) shows the CRISIS ventilator in-line with a gas-flow analyzer in-line with the calibrated test lung experimental apparatus.