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Table 2 Total respiratory heat exchanges

From: Measurement of tracheal temperature is not a reliable index of total respiratory heat loss in mechanically ventilated patients

Inspired gas-conditioning

Total respiratory heat

device

loss (cal/min)

HH

 

   45 min

52.3 ± 17.2 (31.3-80.8)*

   24 h

51.7 ± 16.4 (30.4-77.8)*

Hydrophobic HME

 

   45 min

100.1 ± 19.1 (83.7-133.8)

   6 h

111.2 ± 50.1 (68.3-230.0)

   24 h

108.5 ± 21.8 (86.2-151.1)

Hygroscopic HME

 

   45 min

92.3 ± 16.4 (64.6-111.9)

   6 h

102.6 ± 51.7 (73.2-194.0)

   24 h

99.8 ± 28.9 (71.3-147.1)

  1. Values are expressed as mean ± standard deviation (range). *P < 0.01 versus hydrophobic and hygroscopic HME.
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Critical Care

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