Table 1

Results as mean ± SD

MR 730 heated tube
 Dar HC
 MR 730
Set temperature, 35°C


     AH (mgH2O/l)
 26.7 ± 0.3*
 37.4 ± 0.6
 38.0 ± 0.9
     RH (%)
 83.7 ± 1.0*
 97.7 ± 1.4
 93.2 ± 1.5
Set temperature, 37°C


     AH (mgH2O/l)
 34.5 ± 1.6*
 38.7 ± 2.2†
 43.1 ± 1.1
     RH (%)
 91.8 ± 3.2
 87.7 ± 7.4†
 94.6 ± 0.9

*P < 0.05 vs DAR HC and MR 730, †P < 0.05 vs MR 730.

Chiumello et al. Critical Care 2004 8(Suppl 1):P1   doi:10.1186/cc2468