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- Title
Endotracheal temperature and humidity in laryngectomized patients in a warm and dry environment and the effect of a heat and moisture exchanger.
- Authors
Scheenstra, Renske J.; Muller, Sara H.; Hilgers, Frans J. M.
- Abstract
Background This study was designed to assess endotracheal climate in laryngectomized patients in a warm and dry environment and the effects of a heat and moisture exchanger (HME). Methods Endotracheal temperature and humidity were measured in 11 laryngectomized patients with a regularly used HME (Provox Normal HME; R-HME), an HME with antimicrobial filter (Provox Micron HME; F-HME), and without HME (open stoma). Measurements were performed at 32°C, 34°C, and 38°C (<25% relative humidity). Results Both R-HME and F-HME increased end-inspiratory humidity (AHinsp) equally (range, 3.4 to 5.6 mgH2O/L). The R-HME has a cooling effect on end-inspiratory temperature (Tinsp), which is similar for all tested environmental conditions (−3.8°C); F-HME decreases Tinsp less (range, −1.3 to −0.6°C). Conclusions In a warm and dry environment, both R- and F-HME significantly cool and humidify inspired air. Therefore, consistent use of an HME under these climate conditions is also probably clinically beneficial. © 2010 Wiley Periodicals, Inc. Head Neck, 2010
- Subjects
PHYSIOLOGICAL effects of temperature; PHYSIOLOGICAL effects of humidity; LARYNGECTOMEES; LARYNGECTOMY; RESPIRATORY therapy
- Publication
Head & Neck, 2011, Vol 33, Issue 9, p1285
- ISSN
1043-3074
- Publication type
Article
- DOI
10.1002/hed.21597