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 کاملIsoprene from expired air inside a private car.
The concentration of isoprene inside a small-sized parked private car with one person was found to be of the order of 20 micrograms/m3. Isoprene was then the major non-methane volatile hydrocarbon except in strongly traffic-polluted parking places. On driving, with intermediate fan ventilation, the isoprene levels were one order of magnitude lower. In the empty car, the concentrations were stil...
متن کاملA technique for evaluating expired air mixing devices.
A simple method for measuring the efficiency of expired air mixing devices is described. Preliminary studies comparing a number of mixing chambers indicate that the bag-inbottle system is the most efficient. The dependence of mixing efficiency on VT, f and expired flow rate is demonstrated. Two types of mixing failure are distinguished. The clinical implications are discussed, including those r...
متن کاملThe value of expired gas analysis is never expired.
Complications of mechanical ventilation increase with duration. Delayed weaning and premature weaning are both associated with increasing complications. In addition, adverse events and deterioration relating to the ventilator system could happen any time. Therefore, accurate monitoring of the patient’s respiratory condition and adjustment of ventilator settings are essential during mechanical v...
متن کاملDistribution of expired air in carry cots--a possible explanation for some sudden infant deaths.
A possible explanation for the cause of some cot deaths is examined by placing an appropriate cot death model on a cold wet sheet so that its "breath" is directed downwards across the sheet, thereby being cooled and becoming heavy enough to stay trapped in the hollow of the mattress. The breath is then available for rebreathing by the model. The level of carbon dioxide (CO2) "inhaled" is showed...
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ژورنال
عنوان ژورنال: The American Journal of the Medical Sciences
سال: 1914
ISSN: 0002-9629
DOI: 10.1097/00000441-191407000-00051