Breath-by-breath estimation of alveolar gas exchange.
نویسندگان
چکیده
منابع مشابه
Breath-by-breath assessment of alveolar gas stores and exchange.
The volume of O(2) exchanged at the mouth during a breath (Vo(2,m)) is equal to that taken up by pulmonary capillaries (Vo(2,A)) only if lung O(2) stores are constant. The latter change if either end-expiratory lung volume (EELV), or alveolar O(2) fraction (Fa(O(2))) change. Measuring this requires breath-by-breath (BbB) measurement of absolute EELV, for which we used optoelectronic plethysmogr...
متن کاملInnovative Methodology Breath-by-breath assessment of alveolar gas stores and exchange
Aliverti, A., B. Kayser, and P. T. Macklem. Breath-by-breath assessment of alveolar gas stores and exchange. J Appl Physiol 96: 1464–1469, 2004. First published December 2, 2003; 10.1152/japplphysiol.01198.2003.—The volume of O2 exchanged at the mouth during a breath (VO2,m) is equal to that taken up by pulmonary capillaries (VO2,A) only if lung O2 stores are constant. The latter change if eith...
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We describe a single flow transducer breath-by-breath gas exchange measurement system suitable for use during general anaesthesia. The system uses a Fleisch No. 2 pneumotachograph, a mass spectrometer and a microcomputer to give real-time continuous measurements. Correction for apparent gas exchange attributable to changes in gas stored in the lung (functional residual capacity) is available. T...
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Tidal ventilation gas-exchange models in respiratory physiology and medicine not only require solution of mass balance equations breath-by-breath but also may require within-breath measurements, which are instantaneous functions of time. This demands a degree of temporal resolution and fidelity of integration of gas flow and concentration signals that cannot be provided by most clinical gas ana...
متن کاملBreath tests and airway gas exchange.
Measuring soluble gas in the exhaled breath is a non-invasive technique used to estimate levels of respiratory, solvent, and metabolic gases. The interpretation of these measurements is based on the assumption that the measured gases exchange in the alveoli. While the respiratory gases have a low blood-solubility and exchange in the alveoli, high blood-soluble gases exchange in the airways. The...
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ژورنال
عنوان ژورنال: The Annals of physiological anthropology
سال: 1987
ISSN: 0287-8429
DOI: 10.2114/ahs1983.6.25