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Table 2 Change in PaCO2 in % of baseline value at each RR

From: Re-inspiration of CO2 from ventilator circuit: effects of circuit flushing and aspiration of dead space up to high respiratory rate

RR, min-1 20 40 60
  Change in PaCO2 in % of baseline value at each RR
Circuit Flushing -10.3 ± 4, P = 0.005 -20 ± 3, P = 0.0002 -26 ± 7, P = 0.001
ASPIDS - -33 ± 5, P = 0.0004 -41 ± 6, P = 0.0002
  1. ASPIDS, aspiration of dead space; PaCO2, carbon dioxide arterial partial pressure; RR, respiratory rate.