A newly developed tool for intra-tracheal temperature and humidity assessment in laryngectomized individuals: The Airway Climate Explorer (ACE)

J. K. Zuur, S. H. Muller, F. H.C. de Jongh, M. J. van der Horst, M. Shehata, J. van Leeuwen, M. Sinaasappel, F. J.M. Hilgers*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

15 Citations (Scopus)
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Abstract

The aim of this study is to develop a postlaryngectomy airway climate explorer (ACE) for assessment of intratracheal temperature and humidity and of influence of heat and moisture exchangers (HMEs). Engineering goals were within-device condensation prevention and fast response time characteristics. The ACE consists of a small diameter, heated air-sampling catheter connected to a heated sensor house, containing a humidity sensor. Air is sucked through the catheter by a controlled-flow pump. Validation was performed in a climate chamber using a calibrated reference sensor and in a two-flow system. Additionally, the analyser was tested in vivo. Over the clinically relevant range of humidity values (5-42 mg H2O/l air) the sensor output highly correlates with the reference sensor readings (R2 > 0.99). The 1-1/e response times are all <0.5 s. A first in vivo pilot measurement was successful. The newly developed, verified, fast-responding ACE is suitable for postlaryngectomy airway climate assessment.

Original languageEnglish
Pages (from-to)737-745
Number of pages9
JournalMedical and Biological Engineering and Computing
Volume45
Issue number8
DOIs
Publication statusPublished - 1 Aug 2007
Externally publishedYes

Keywords

  • Airway climate
  • Gas sampling probe
  • Heat and moisture exchanger
  • Humidity
  • Temperature

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