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In-series ventilation set-up with two patients connected to a single ventilator, as per the ACTIV system. A) An active switching valve, as that presented in this paper, B) One-way and variable pressure drop valves, such as the PANDAPeep valves, C) HEPA filters, D) Passive Y connectors, and E) Pressure and flow sensors. A comprehensive instruction set can be found at https://gitlab.com/luihp/activvent.
