2008
DOI: 10.15360/1813-9779-2008-3-66
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Multilevel Ventilation: Theory and Simplified Mathematical Model

Abstract: Одной из важных и трудно решаемых проблем ис кусственной вентиляции легких (ИВЛ) является выбор режима ИВЛ у больных с диффузионным патологичес ким процессом в легочной ткани, который вызывает вы раженную негомогенность доставки газовой смеси в различные отделы лёгких.Исходя из основ математического и физического моделирования искусственной вентиляции легких Исходя из проблематики искусственной вентиляции легких (ИВЛ) при негомогенных патологических процессах в лег ких (ALI, ARDS, пневмония и др.), авторы созд… Show more

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“…21 Hence, a single ventilation mode with fixed ventilation frequency (f), inspiratory time (Ti), I:E ratio, Vt, single PEEP, and inspiratory pressure cannot optimally ventilate inhomogenous lungs. 21 , 22 Fixed ventilation parameters will allow optimal ventilation of only some compartments, while others will be either sub-optimally ventilated or over-distended. Using PMLV, these clinical problems may be partly resolved by: Recruitment and ventilation of long TauE areas with high PEEP and low ventilation frequency and also avoiding over-distension of healthy areas (lower PEEP, higher frequency) and thus avoiding potential consequences of sustained high PEEP when conventional ventilation is used ( Figure 5 ).…”
Section: From Theory To Practicementioning
confidence: 99%
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“…21 Hence, a single ventilation mode with fixed ventilation frequency (f), inspiratory time (Ti), I:E ratio, Vt, single PEEP, and inspiratory pressure cannot optimally ventilate inhomogenous lungs. 21 , 22 Fixed ventilation parameters will allow optimal ventilation of only some compartments, while others will be either sub-optimally ventilated or over-distended. Using PMLV, these clinical problems may be partly resolved by: Recruitment and ventilation of long TauE areas with high PEEP and low ventilation frequency and also avoiding over-distension of healthy areas (lower PEEP, higher frequency) and thus avoiding potential consequences of sustained high PEEP when conventional ventilation is used ( Figure 5 ).…”
Section: From Theory To Practicementioning
confidence: 99%
“…21 Hence, a single ventilation mode with fixed ventilation frequency (f), inspiratory time (Ti), I:E ratio, Vt, single PEEP, and inspiratory pressure cannot optimally ventilate inhomogenous lungs. 21,22 Fixed ventilation parameters will allow optimal ventilation of only some compartments, while others will be either sub-optimally ventilated or over-distended. Using PMLV, these clinical problems may be partly resolved by:…”
Section: From Theory To Practicementioning
confidence: 99%
“…It is well known that in classical ALV regimes, even the best frequency and pressure optimization procedure of ALV parameters cannot optimally distribute gases to individual but differently damaged compartments [6]. Hence, a single ventilation mode with the ventilation frequency (f), time of inspiration-to-expiration ratio (T I : TE), respiratory volume (V T ), positive end-expiratory pressure (PEEP), and ventilation support pressure (Ppc) in pressure controlled mode as the fixed parameters cannot optimally ventilate inhomogeneous lungs [6,7]. Differently damaged compartments are dispersed in whole lungs.…”
Section: Explanation Of Basic Principles Of the Three Levels Of Programmed Ventilation (3-lv)mentioning
confidence: 99%