Table 3.

Maximum and minimum tracheal temperatures

	Tracheal temperatures (°C)
Inspired gas-conditioning
device	Maximum	Minimum	Room temperature (°C)	Body temperature (°C)
HH
45 min	35.7 ± 1.0	34.3 ± 1.0	23.6 ± 0.9	37.8 ± 1.0
	(35.1-36.5)	(33.5-35.1)	(22.5-24.9)	(36.4-39.1)
24 h	35.9 ± 0.9	34 ± 1.0	23.3 ± 1.0	37.4 ± 0.9
	(35.2-37.1)	(33.2-34.9)	(22.6-25.0)	(36.3-38.4)
Hydrophobic HME
45 min	35.4 ± 1.2	32.0 ± 1.2	23.6 ± 0.9	37.9 ± 1.0
	(33.4-37.3)	(30.4-33.2)	(22.6-25.0)	(36.1-39.0)
6 h	35.5 ± 0.8	32.6 ± 0.8	23.6 ± 0.9	37.9 ± 1.0
	(34.4-36.7)	(31.3-33.4)	(22.0-24.9)	(36.0-39.4)
24 h	35.3 ± 0.7	32.4 ± 1.1	23.6 ± 1.0	37.3 ± 0.8
	(34.4-36.1)	(30.5-32.9)	(21.9-24.2)	(36.3-38.4)
Hygroscopic HME
45 min	36.3 ± 0.8	34.2 ± 0.9	23.6 ± 1.0	37.4 ± 1.1
	(35.0-36.9)	(33.1-34.8)	(21.9-24.6)	(36.1-39.5)
6 h	36.2 ± 0.9	34.2 ± 0.7	23.4 ± 1.5	37.9 ± 1.0
	(35.0-37.3)	(33.4-35.0)	(20.8-24.2)	(36.5-39.2
24 h	36.2 ± 0.8	34.3 ± 1.2	23.0 ± 1.2	37.8 ± 0.8
	(35.5-37.8)	(32.5-37.7)	(20.8-24.4)	(36.5-38.8)

Room temperature was measured at the patients' bedsides. Body temperature was obtained in the oesophagus. Values are expressed as mean ± standard deviation (range).