DEADSPACE DURING HIGH FREQUENCY VENTILATION
نویسندگان
چکیده
منابع مشابه
Carbon dioxide clearance and deadspace during high frequency jet ventilation. Investigations in the dog.
The effects of frequency, tidal volume and added deadspace on carbon dioxide clearance were measured during high frequency jet ventilation at 1, 3 and 5 Hz in dogs. With a short, small volume deadspace, carbon dioxide clearance increased with minute volume at each frequency, but for a given minute volume the clearance decreased with increase in frequency. At 5 Hz, carbon dioxide clearance was l...
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BACKGROUND We were concerned about the risk of inadequate humidification during high-frequency percussive ventilation (HFPV). METHODS We studied 5 humidifiers during HFPV with a lung model, at bias gas flows of 10 L/min, 30 L/min, and 50 L/min, and compared the results to those from a comparator ventilator/humidifier setup and to the minimum temperature (30 degrees C) and humidity (30 mg/L) [...
متن کاملEstimating lung volume during high frequency ventilation
The primary goals of lung ventilation are to bring oxygen into the alveoli from where it can enter the blood, and to eliminate carbon dioxide dissolved in the blood. Since CO2 is much more soluble in blood than oxygen, O2 transport is diffusion-limited and a large alveolar surface area is the primary factor controlling its delivery. CO2 transport is flow-limited, so that efficient gas transport...
متن کاملFrequency dependence of lung volume changes during superimposed high-frequency jet ventilation and high-frequency jet ventilation.
BACKGROUND Superimposed high-frequency jet ventilation (SHFJV) has proved to be safe and effective in clinical practice. However, it is unclear which frequency range optimizes ventilation and gas exchange. The aim of this study was to systematically compare high-frequency jet ventilation (HFJV) with HFJV by assessing chest wall volume variations (ΔEEV(CW)) and gas exchange in relation to variab...
متن کاملHigh - frequency Jet Ventilation
High-frequency jet ventilation (HFJV) describes a technique of mechanical respiratory support based on the delivery of gases under conditions of constant flow and low pressure. Among the benefits ascribed to HFJV are lessened interference with hemodynamic function and reduced danger of barofrauma. The theoretical and technical aspects of HFJV are discussed and the clinical experience with 39 pa...
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ژورنال
عنوان ژورنال: British Journal of Anaesthesia
سال: 1986
ISSN: 0007-0912
DOI: 10.1093/bja/58.11.1341