The mean inhaled gas absolute humidity was higher in HME than no-HME groups and higher in low-flow than high-flow groups ( -LSB- HME@L : @ @ mg H@OL -RSB- > -LSB- HME@L : @ @ mg H@OL -RSB- > -LSB- @L : @ @ mg H@OL -RSB- > -LSB- @L : @ @ mg H@OL -RSB- ; P < @ ) .