The percentage of carbon dioxide in expired alveolar air
نویسندگان
چکیده
منابع مشابه
A simple method of carbon dioxide estimation in expired air.
A SIMPLE method for the estimation of carbon dioxide in air or gas mixtures containing anaesthetic gases finds many applications in the investigation of anaesthetic problems and in the control of artificial respiration by mechanical respirators. This adaptation of already established techniques utilizes apparatus which may be found in most hospitals. It is rapid, and can be performed at the bed...
متن کاملThe Carbon Dioxide Equilibrium in Alveolar Air and Arterial Blood
It is a familiar thesis that if the diffusing apparatus of the lung permits 95 per cent saturation of the blood with oxygen, substantial equilibrium between the carbon dioxide pressures on opposite sides of the alveolar membrane will be attained. The principal supporting argument is the fact that carbon dioxide diffuses 20 to 30 times as rapidly as oxygen. It is assumed that the transfer of eac...
متن کاملOn the determination of the physiologically effective pressures of oxygen and carbon dioxide in alveolar air.
Although studies of the composition of alveolar air have been invaluable to the advance of respiratory physiology a precise definition of alveolar gas pressures and the accurate sampling of alveolar air have proved elusive goals (1). Owing to the cyclic nature of the ventilatory process the partial pressures of 02 and CO2 in the alveoli are changing continually (time factor) (9), and, owing to ...
متن کاملExpired carbon dioxide: a noninvasive monitor of cardiopulmonary resuscitation.
End-tidal CO2 concentration (ETCO2) may serve as a simple noninvasive measurement of the blood flow generated by precordial compression during cardiopulmonary resuscitation (CPR). In a mechanically ventilated porcine preparation of ventricular fibrillation, onset of fibrillation was associated with a rapid decrease in ETCO2 from 4.0 +/- 0.2% to less than 0.7 +/- 0.2%. With precordial compressio...
متن کاملPsychological Concomitants of High Alveolar Carbon Dioxide
merer at various stages of his progress toward recovery. The determination of alveolar carbon dioxide is readily made by analysis of expired air. The tension, or partial pressure, of the C02 thus ascertained very closely approximates that of the arterial blood of the subject. For a prolonged research upon psychological clinical subjects, this method is obviously preferable to direct blood analy...
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ژورنال
عنوان ژورنال: Proceedings of the Linnean Society of New South Wales.
سال: 1917
ISSN: 0370-047X
DOI: 10.5962/bhl.part.4849