Short-term endotracheal climate changes and clinical effects of a heat and moisture exchanger with an integrated electrostatic virus and bacterial filter developed for laryngectomized individuals

Renske J. Scheenstra, Sara H. Muller, Andrew Vincent, Annemieke H. Ackerstaff, Irene Jacobi, Frans J.M. Hilgers

Research output: Contribution to journalArticle

11 Citations (Scopus)


Conclusion: Both the regularly used heat and moisture exchanger (R-HME) and the HME with both an antimicrobial and hygroscopic element (F-HME) are effective moisture exchangers. The antimicrobial filter of the F-HME acts as a heat exchanger. The external features of the F-HME were experienced as inconvenient, but decreased sputum production was reported as well. Objectives: Recently an HME with an integrated antimicrobial filter has become available for use in laryngectomized patients. The purpose of this study was to assess its short-term endotracheal climate changes and feasibility in daily practice. Methods: Endotracheal temperature and humidity were successfully measured in 13 laryngectomized patients (2652 analysed full breaths), during 10 min rest-breathing with the R-HME, with an F-HME and without HME in a randomized sequence. Additionally, a 3 week prospective clinical feasibility trial was conducted in 17 laryngectomized patients. Results: Both R-HME and F-HME increase endotracheal minimum humidity values (5.8 and 4.7 mgH2O/L, respectively; p <0.0001). Compared with open stoma breathing, in contrast to the R-HME, the F-HME increases both end-inspiratory and end-expiratory temperature values (1.1°C, and 0.6°C, respectively). After the 3-week clinical feasibility trial, one patient dropped out; 11 patients (11/16=69%) disliked the larger design of the F-HME and all patients reported less optimal airtight occlusion. Five patients (5/16=31%) reported remarkably decreased sputum production.

Original languageEnglish
Pages (from-to)739-746
Number of pages8
JournalActa Oto-Laryngologica
Issue number6
Publication statusPublished - 1 Jun 2010
Externally publishedYes


  • Filtration
  • Heat and moisture exchanger
  • Heat capacity
  • Patient compliance
  • Short-term clinical effects
  • Temperature and humidity
  • Total laryngectomy
  • Tracheal climate
  • Virus and bacterial filter

ASJC Scopus subject areas

  • Otorhinolaryngology

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