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My understanding is that what a ventilator does is basically: - supply pressurized air to patient - turn off the pressure, open exhalation valve and let patient exhale Given that every hospital I've seen has compressed air outlets, wouldn't it be possible to get acceptable results with a pressure regulator and a timed set of valves? Or is the pressure required to fill a patient's lungs so high that the volume must be…
My layman's understanding is that ventilation is a fairly complex art/science, and that modern ventilators have multiple modes that are effectively different control laws. I think that the pressure required to fill a patient's lungs is quite different in a COVID patient than a normal patient, because the disease has caused huge flow restriction in the lungs. I think that generally you want to control flow rate, becau…
If your input is O2 (or O2+N, no CO2) and you run part of the pressurization cycle with the exhalation valve open, won't you displace at least some CO2 (not in tissue, just in the lung cavity)?