Device

Water Usage (ml)

Condensate (ml)

Airway Temp. (°C)

HH

2039 ± 387

930 ± 271

36.3 ± 1.2

HH + HWC

766 ± 281

12 ± 16^*

37.1 ± 1.0

AHME

135 ± 53

1 ± 3^*

36.4 ± 1.7

Branson et al. Critical Care 1999 3(Suppl 1):P017   doi:10.1186/cc392