Distribution of ventilation and frequency-dependence of dynamic lung compliance.
نویسنده
چکیده
منابع مشابه
Relationship between frequency dependence of lung compliance and distribution of ventilation.
The previously demonstrated empirical association between frequency dependence of lung compliance and distribution of ventilation, the latter determined by the N(2) washout technique, was confirmed by establishing a mathematical link between the two tests. By assuming a two-compartment system with known compliances and making corrections for Pendelluft and common dead space mixing effects, the ...
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Nine healthy volunteers were investigated, both while awake and breathing spontaneously, and while anaesthetized with IPPV, in all cases at rates of both 12 and 24 b.p.m. Gas flow and volume were measured with a pneumotachography. The transpulmonary pressure (the pressure difference between the trachea or the buccal cavity and the oesophagus) was also recorded. The distribution of gas was analy...
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The study deals with experimental measuring of attenuation of dynamic pressure during high-frequency oscillatory ventilation. The experimental circuit consists of high-frequency oscillatory ventilator Sensormedics 3100 B, patient circuit and lung model 5600i. Different values of the flow resistance and alveolar compliance were modelled during the experimental measurement. The ventilatory parame...
متن کاملEffects of high-frequency oscillatory ventilation and partial liquid ventilation on acute lung injury induced by steam inhalation in new zealand rabbits.
OBJECTIVE to investigate the beneficial effects of high-frequency oscillatory ventilation (HFOV) and partial liquid ventilation (PLV) in treating acute lung injury induced by steam inhalation. DESIGN a prospective, randomized, controlled, multiple group study. SETTING an animal research centre laboratory in a university burns centre. SUBJECTS New Zealand rabbits (n = 30; 2.25 ± 0.25 kg) o...
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BACKGROUND Dynamic intraesophageal pressure (Pes) is used to estimate intrapleural pressure (Ppl) to calculate lung compliance and resistance. This study investigated the nonhuman primate Ppl-Pes tissue barrier frequency response and the dynamic response requirements of Pes manometers. METHODS In healthy monkeys and monkeys with acute lung injury undergoing ventilation, simultaneous Ppl and P...
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ورودعنوان ژورنال:
- Thorax
دوره 26 6 شماره
صفحات -
تاریخ انتشار 1971