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The effects of expiratory flow limitation and different inspiratory and expiratory airway resistances on dynamic hyperinflation of the lungs: A bench study

Identifikátory výsledku

  • Kód výsledku v IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21460%2F19%3A00322122" target="_blank" >RIV/68407700:21460/19:00322122 - isvavai.cz</a>

  • Výsledek na webu

    <a href="http://dx.doi.org/10.1007/978-981-10-9035-6_152" target="_blank" >http://dx.doi.org/10.1007/978-981-10-9035-6_152</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1007/978-981-10-9035-6_152" target="_blank" >10.1007/978-981-10-9035-6_152</a>

Alternativní jazyky

  • Jazyk výsledku

    angličtina

  • Název v původním jazyce

    The effects of expiratory flow limitation and different inspiratory and expiratory airway resistances on dynamic hyperinflation of the lungs: A bench study

  • Popis výsledku v původním jazyce

    Dynamic hyperinflation occurs when mean alveolar pressure exceeds the mean airway pressure measured in the airway opening. The dynamic hyperinflation develops as a consequence of insufficiently long expiration terminated by the subsequent inspiration. Two main principles are supposed to create the dynamic hyperinflation during high frequency oscillatory ventilation (HFOV): expiratory flow limitation and different inspiratory and expiratory airway resistances (Re > Ri). The aim of the study is to design and test a physical model of the respiratory system comprising both the mechanisms causing dynamic hyperinflation and to characterize their effect upon dynamic hyperinflation or hypoinflation development during HFOV. The models were created using a rigid volume and passive pneumatic components mimicking the required characteristics of the airway resistance. The models were connected to a HFOV ventilator and different ventilator settings were applied in order to investigate the parameters having the most significant effect on dynamic hyperinflation development. The main result of the study is that the expiratory flow limitation corresponds better with the observed and published properties of the respiratory system during HFOV. The magnitude of dynamic hyperinflation depends on ventilator setting. The acquired results are supported by recently published studies using mathematical-physical modeling and correspond with results of the published clinical trials.

  • Název v anglickém jazyce

    The effects of expiratory flow limitation and different inspiratory and expiratory airway resistances on dynamic hyperinflation of the lungs: A bench study

  • Popis výsledku anglicky

    Dynamic hyperinflation occurs when mean alveolar pressure exceeds the mean airway pressure measured in the airway opening. The dynamic hyperinflation develops as a consequence of insufficiently long expiration terminated by the subsequent inspiration. Two main principles are supposed to create the dynamic hyperinflation during high frequency oscillatory ventilation (HFOV): expiratory flow limitation and different inspiratory and expiratory airway resistances (Re > Ri). The aim of the study is to design and test a physical model of the respiratory system comprising both the mechanisms causing dynamic hyperinflation and to characterize their effect upon dynamic hyperinflation or hypoinflation development during HFOV. The models were created using a rigid volume and passive pneumatic components mimicking the required characteristics of the airway resistance. The models were connected to a HFOV ventilator and different ventilator settings were applied in order to investigate the parameters having the most significant effect on dynamic hyperinflation development. The main result of the study is that the expiratory flow limitation corresponds better with the observed and published properties of the respiratory system during HFOV. The magnitude of dynamic hyperinflation depends on ventilator setting. The acquired results are supported by recently published studies using mathematical-physical modeling and correspond with results of the published clinical trials.

Klasifikace

  • Druh

    D - Stať ve sborníku

  • CEP obor

  • OECD FORD obor

    20601 - Medical engineering

Návaznosti výsledku

  • Projekt

  • Návaznosti

    S - Specificky vyzkum na vysokych skolach

Ostatní

  • Rok uplatnění

    2019

  • Kód důvěrnosti údajů

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Údaje specifické pro druh výsledku

  • Název statě ve sborníku

    World Congress on Medical Physics and Biomedical Engineering 2018 (Vol. 1)

  • ISBN

    978-981-10-9034-9

  • ISSN

    1680-0737

  • e-ISSN

  • Počet stran výsledku

    5

  • Strana od-do

    823-827

  • Název nakladatele

    Springer Nature Singapore Pte Ltd.

  • Místo vydání

  • Místo konání akce

    Prague

  • Datum konání akce

    3. 6. 2018

  • Typ akce podle státní příslušnosti

    WRD - Celosvětová akce

  • Kód UT WoS článku

    000450908300152