Breathing resistance in heat and moisture exchanging devices
نویسندگان
چکیده
منابع مشابه
A breathing filter exchanging heat and moisture prevents asthma induced by cold air.
In order to devise a protective aid against bronchial obstruction induced by cold air, we have tested a breathing filter with heat and moisture exchanging properties. Nine asthma patients, who all had a history of cold-induced asthma, took part in exercise tests on an ergometer bicycle at a temperature of approximately -10 degrees C, without and with a breathing filter. Without a breathing filt...
متن کاملInfluence of breathing resistance of heat and moisture exchangers on tracheal climate and breathing pattern in laryngectomized individuals.
BACKGROUND The aim of this study was to determine the influence of breathing resistance of heat and moisture exchangers (HMEs) on endotracheal climate and breathing pattern. METHODS Endotracheal temperature and humidity and tidal volumes were measured in 11 laryngectomized patients with a regularly used HME with "standard" breathing resistance (Provox Normal HME; R-HME), a low breathing-resis...
متن کاملAir flow resistance of three heat and moisture exchanging filter designs under wet conditions: implications for patient safety.
Heat and moisture exchanging filters (HMEFs) can be blocked by secretions. We have studied HMEF performance under wet conditions to see which particular design features predispose to this complication. Dar Hygrobac-S (composite felt filter and cellulose exchanger), Dar Hygroster (composite pleated ceramic membrane and cellulose exchanger) and Pall BB22-15 (pleated ceramic membrane) HMEFs were t...
متن کاملIn vitro evaluation of heat and moisture exchangers designed for spontaneously breathing tracheostomized patients.
BACKGROUND Heat and moisture exchangers (HMEs) are commonly used in chronically tracheostomized spontaneously breathing patients, to condition inhaled air, maintain lower airway function, and minimize the viscosity of secretions. Supplemental oxygen (O2) can be added to most HMEs designed for spontaneously breathing tracheostomized patients. We tested the efficiency of 7 HMEs designed for spont...
متن کاملcohesion and cohesive devices in a contrastive analysis between ge and esp texts
the present study was an attempt to conduct a contrastive analysis between general english (ge) and english for specific purposes (esp) texts in terms of cohesion and cohesive devices. to this end, thirty texts from different esp and ge textbooks were randomly selected. then they were analyzed manually to find the frequency of cohesive devices. cohesive devices include reference, substitution, ...
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ژورنال
عنوان ژورنال: Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology
سال: 2020
ISSN: 1754-3371,1754-338X
DOI: 10.1177/1754337120980661