Figure 2From: Re-inspiration of CO2 from ventilator circuit: effects of circuit flushing and aspiration of dead space up to high respiratory rateProtocol for Part 2. At RR 20, 40 and 60 equilibration time preceded measurements denoted M, during ordinary ventilation (NONE), Circuit Flushing (Circuit Flush) and complete ASPIDS. Letters a-h correspond to instances described in the text.Back to article page