Influence of heat and moisture exchanger respiratory load on transcutaneous oxygenation in laryngectomized individuals: A randomized crossover study

✍ Scribed by J. Karel Zuur; Sara H. Muller; Michiel Sinaasappel; Guus A. M. Hart; Nico van Zandwijk; Frans J. M. Hilgers

• Publisher: John Wiley and Sons
• Year: 2007
• Tongue: English
• Weight: 208 KB
• Volume: 29
• Category: Article
• ISSN: 1043-3074
• DOI: 10.1002/hed.20643

✦ Synopsis

Abstract

Background

High‐resistance heat and moisture exchangers (HMEs) have been reported to increase transcutaneous oxygenation (tcpO~2~) values in laryngectomized individuals and to negatively influence patient compliance. The goal of the present study was to validate earlier published results on short‐term transcutaneous oxygenation changes by high‐resistance HMEs.

Methods

We conducted a randomized crossover study, monitoring the influence of an HME on tcpO~2~ over a 2‐hour time interval in 20 subjects.

Results

No evidence of an immediate HME effect (95% CI: −14.9–13.3 mm Hg, p = .91), or a time‐dependent HME effect (95% CI: −.121 – .172 mm Hg/minute, p = .74), on tcpO~2~ was found. After fitting the statistical model without time dependency, again no evidence of HME presence was seen (95% CI: −.5 mm Hg – 3.6 mm Hg, p = .15).

Conclusion

In contrast to earlier suggestions, there is no evidence of increased tcpO~2~ levels by high‐resistance HMEs in laryngectomized individuals. Thus, using such HMEs has no added clinical value in this respect. © 2007 Wiley Periodicals, Inc. Head Neck, 2007