Endotracheal temperature and humidity in laryngectomized patients in a warm and dry environment and the effect of a heat and moisture exchanger

Scheenstra, Renske J.; Müller, Sara; Hilgers, Frans J. M.

doi:10.1002/hed.21597

Cited by 17 publications

(19 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Similar studies have replicated these findings with different methodologies, demonstrating that oral breathing (which, when contrasted to baseline nasal breathing, results in less treated/humidified air reaching the larynx) is directly associated with increases in PTP and PPE (20). Hydration and increased ambient humidity are positively associated with reduced PTP and PPE and, crucially, with decreases in jitter and shimmer (21)(22)(23)(24). The effects of aridity on the vocal tract have long-term effects, as evidenced by the fact that otorhinological practice patients often exhibit throat ailments associated with dry working conditions.…”

Section: Significancesupporting

confidence: 63%

Climate, vocal folds, and tonal languages: Connecting the physiological and geographic dots

Everett

Blasí

Roberts

2015

Proc. Natl. Acad. Sci. U.S.A.

145

110

View full text Add to dashboard Cite

We summarize a number of findings in laryngology demonstrating that perturbations of phonation, including increased jitter and shimmer, are associated with desiccated ambient air. We predict that, given the relative imprecision of vocal fold vibration in desiccated versus humid contexts, arid and cold ecologies should be less amenable, when contrasted to warm and humid ecologies, to the development of languages with phonemic tone, especially complex tone. This prediction is supported by data from two large independently coded databases representing 3,700+ languages. Languages with complex tonality have generally not developed in very cold or otherwise desiccated climates, in accordance with the physiologically based predictions. The predicted global geographic-linguistic association is shown to operate within continents, within major language families, and across language isolates. Our results offer evidence that human sound systems are influenced by environmental factors.climate | language | adaptation | tone A standard assumption in linguistics is that sound systems are immune to ecological effects (1). This presumption has been called into question by several recent studies providing evidence for a correlation between aspects of phonology (such as sonority) and climatic and geographic factors (such as temperature, plant cover, or terrain), as well as behaviors associated with such factors (2-9). Most recently, a correlation was uncovered between ejective sounds and regions of high elevation in a sample of nearly 600 languages (10). Although two plausible physiological motivations are offered in ref. 10 for the correlation between ejective use and reduced ambient air pressure, those explanations have yet to be supported by experimental evidence. The uncovered patterns could be epiphenomenal, and in general, the cross-linguistic statistical studies in question have not been buttressed by experimental support (11).In this study, we offer evidence for a negative correlation between linguistic tone and characteristic rates of desiccation in ambient air. In contradistinction to the aforementioned studies offering geographic/phonetic correlations, however, we suggest this correlation is predicted by extensive experimental research on the properties of the human larynx. This research, which has been conducted by numerous laryngologists over the last decade and a half, has not been previously tied to the distribution of the world's tonal languages. We submit that the research predicts that the relatively precise manipulation of the vocal folds associated with tone, especially complex tone, should be more difficult to achieve in arid climates-particularly very cold ones-when contrasted to warmer and more humid climates. We offer global, continental, and intralinguistic-family data consistent with the expected geographic/tonemic association. Our results cannot facilely be ascribed to well-known phylogenetic and areal relatedness. We conclude by suggesting that the most reasonable interpretation of the data is that the a...

show abstract

Section: Significancesupporting

confidence: 63%

Climate, vocal folds, and tonal languages: Connecting the physiological and geographic dots

Everett

Blasí

Roberts

2015

Proc. Natl. Acad. Sci. U.S.A.

145

110

View full text Add to dashboard Cite

show abstract

“…9). 15 Comparing Figure 5 and 6 (weight change and AH insp as a function of breathing volume, respectively), it is interesting that the curves in these figures show a very different shape. The AH insp (see Fig.…”

Section: Discussionmentioning

confidence: 99%

“…6) decays exponentially, similar to previously described in vivo AH insp measurements. 6,13,15 Weight change (see Fig. 5) increases linearly for small volumes and then levels off.…”

Section: Discussionmentioning

confidence: 99%

“…12,13 Moreover, only a minority of available HMEs thus far have been analyzed both in vitro and in vivo. [12][13][14][15] Therefore, an easy method for assessing HME performance using commercially available equipment could be very useful for medical professionals. Also, for HME development a universally available tool is required for comparing newly designed and existing HMEs next to clinical feasibility studies.…”

Section: See the Related Editorial On Page 1559mentioning

confidence: 99%

“…[15][16][17][18] AH insp-meas cannot be lower than AH amb , and if AH amb is equal to the alveolar AH (AH alv ), the AH insp-meas will be equal to AH alv .…”

Section: Data Normalizationmentioning

confidence: 99%

See 2 more Smart Citations

A Novel, Simplified Ex Vivo Method for Measuring Water Exchange Performance of Heat and Moisture Exchangers for Tracheostomy Application

Boer

Müller²,

Vincent

et al. 2013

Respir Care

View full text Add to dashboard Cite

BACKGROUND: Breathing through a tracheostomy results in insufficient warming and humidification of inspired air. This loss of air-conditioning can be partially compensated for with the application of a heat and moisture exchanger (HME) over the tracheostomy. In vitro (International Organization for Standardization [ISO] standard 9360 -2:2001) and in vivo measurements of the effects of an HME are complex and technically challenging. The aim of this study was to develop a simple method to measure the ex vivo HME performance comparable with previous in vitro and in vivo results. METHODS: HMEs were weighed at the end of inspiration and at the end of expiration at different breathing volumes. Four HMEs (Atos Medical, Hörby, Sweden) with known in vivo humidity and in vitro water loss values were tested. The associations between weight change, volume, and absolute humidity were determined using both linear and non-linear mixed effects models. RESULTS: The rating between the 4 HMEs by weighing correlated with previous intratracheal measurements (R 2 ‫؍‬ 0.98), and the ISO standard (R 2 ‫؍‬ 0.77). CONCLUSIONS: Assessment of the weight change between end of inhalation and end of exhalation is a valid and simple method of measuring the water exchange performance of an HME.

show abstract

Ex vivo humidifying capacity and patient acceptability of stoma cloths in laryngectomized individuals

et al. 2017

Self Cite

View full text Add to dashboard Cite

show abstract

Endotracheal temperature and humidity in laryngectomized patients in a warm and dry environment and the effect of a heat and moisture exchanger

Abstract: 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.

Cited by 17 publications

References 13 publications

Climate, vocal folds, and tonal languages: Connecting the physiological and geographic dots

Climate, vocal folds, and tonal languages: Connecting the physiological and geographic dots

A Novel, Simplified Ex Vivo Method for Measuring Water Exchange Performance of Heat and Moisture Exchangers for Tracheostomy Application

Ex vivo humidifying capacity and patient acceptability of stoma cloths in laryngectomized individuals

Contact Info

Product

Resources

About