Fig. 1 (abstract P359).
From: 39th International Symposium on Intensive Care and Emergency Medicine
A. The respiratory circuit with optical particle counter PExA. The white arrow shows non-rebreathing valves. The black arrows show the direction of the air. Notice how the PExA is connected on the outflow from the black balloon, which represents a patient, and then back into the respirator again. B. Real-time on-line particle flow measurement from one of the studied patients in the cardiac failure cohort