March 2023
·
25 Reads
Respiratory Care
This page lists the scientific contributions of an author, who either does not have a ResearchGate profile, or has not yet added these contributions to their profile.
It was automatically created by ResearchGate to create a record of this author's body of work. We create such pages to advance our goal of creating and maintaining the most comprehensive scientific repository possible. In doing so, we process publicly available (personal) data relating to the author as a member of the scientific community.
If you're a ResearchGate member, you can follow this page to keep up with this author's work.
If you are this author, and you don't want us to display this page anymore, please let us know.
March 2023
·
25 Reads
Respiratory Care
February 2023
·
15 Reads
·
1 Citation
Head & Neck
Background: To improve the understanding of the thermodynamics and performance of small passive hygroscopic Heat and Moisture Exchangers (HMEs), a computer model simulating HME function is required. Methods: We developed a numerical HME model to calculate the HME's water and heat exchange. The model was tuned and verified with experimental data and validated by applying it to HME design variations. Results: Verification of the model's results to the experimental data shows that the tuned model yields reliable results. The mass of the core, which determines the HME's total heat capacity, is the most important parameter influencing the performance of passive HMEs. Conclusions: Increasing the HME's diameter is an effective way to improve an HME, as it yields higher performance and lowers breathing resistance. HMEs intended for use in warm or dry climates should contain more and those for use in cold humid climates should contain less hygroscopic salt.
December 2020
·
47 Reads
·
4 Citations
Head & Neck
Background Due to the heat and moisture exchanger's (HME) breathing resistance, laryngectomized patients cannot always use an (optimal) HME during physical exercise. We propose a novel HME cassette concept with adjustable “bypass,” to provide adjustment between different breathing resistances within one device. Methods Under standardized conditions, the resistance and humidification performance of a high resistance/high humidification HME (XM) foam in a cassette with and without bypass were compared to a lower resistance/lesser humidification HME (XF) foam in a closed cassette. Results With a bypass in the cassette, the resistance and humidification performance of XM foam were similar to those of XF foam in the closed cassette. Compared to XM foam in the closed cassette, introducing the bypass resulted in a 40% resistance decrease, whereas humidification performance was maintained at 80% of the original value. Conclusions This HME cassette prototype allows adjustment between substantially different resistances while maintaining appropriate humidification performances.
... Interestingly, despite the positive impact reported of NG-HMEs, our patients reported a decrease in average daily use, which was lower than that reported by Longobardi et al., 28 who, unlike our study, contacted the patients by phone once a week. One possible explanation for the decrease in usage may be attributed to the fact that the XtraFlow HME, which has a low breathing resistance, 32 was the most used HME before the change to NG-HMEs. Generally, laryngectomized patients tend to prefer HMEs with lower breathing resistance. ...
December 2020
Head & Neck