Effects of heat moisture exchanger on ventilation efficiency during high frequency oscillatory ventilation
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چکیده
منابع مشابه
High-frequency oscillatory ventilation on shaky ground.
We thought it was impossible. Physiological principles maintained that ventilation at tidal volumes less than the anatomical deadspace should be ineffective (i.e., inspired air not reaching the alveolae). Data from a 1980 study dispelled that myth, showing unequivocally that ventilation with tidal volumes as small as 20 to 30 ml in dogs, a mere fraction of the anatomical deadspace, could mainta...
متن کاملhigh frequency oscillatory ventilation in severe respiratory failure
despite improvement of mechanical ventilation devices for infants, lung injury still causes morbidity and mortality in many cases. to determine the effect of high frequency oscillatory ventilation (hfov) in infants with severe respiratory failure, 10 neonates were evaluated prospectively. mean gestational age of these patients was 35 weeks and alveolar-arterial oxygen gradient (a-ado2) and the ...
متن کاملHigh‐frequency oscillatory ventilation versus conventional ventilation: hemodynamic effects on lung and heart
Abstract High-frequency oscillatory ventilation (HFOV) may improve gas exchange in patients who are inadequately ventilated by conventional mechanical ventilation (CV); however, the hemodynamic consequences of switching to HFOV remain unclear. We compared the effects of CV and HFOV on pulmonary vascular conductance and left ventricular (LV) preload and performance at different airway and fillin...
متن کاملSpecific compliance and gas exchange during high-frequency oscillatory ventilation.
OBJECTIVES To evaluate the use of specific compliance (static compliance/functional residual capacity) to adjust mean airway pressure, resulting in optimal gas exchange during high-frequency oscillatory ventilation in a surfactant-deficient newborn piglet. DESIGN Prospective controlled animal study. SETTING Laboratory. SUBJECTS Eight newborn piglets at 5 days of age. BACKGROUND High-fre...
متن کاملRespiratory input impedance during high frequency oscillatory ventilation.
Total respiratory input impedance (Zrs) measured by forced excitation may be computed easily from pressure and flow measurements recorded at the airway opening. The purpose of this paper was to analyse how the information provided by Zrs may be used for monitoring ventilatory mechanics during high frequency oscillatory ventilation (HFOV). We measured impedance (0.125-32 Hz) in six dogs, and in ...
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ژورنال
عنوان ژورنال: Nihon Shuchu Chiryo Igakukai zasshi
سال: 2006
ISSN: 1340-7988,1882-966X
DOI: 10.3918/jsicm.13.163