Inspired Oxygen Concentrations with or without an Oxygen Economizer during Ether Draw-Over Anaesthesia
نویسندگان
چکیده
منابع مشابه
Domiciliary oxygen concentrators in anaesthesia: preoxygenation techniques and inspired oxygen concentrations.
A conventional preoxygenation technique was compared in two volunteers with two techniques based on a drawover breathing system supplied with oxygen enriched air from a Devilbiss Mini VO2 domiciliary oxygen concentrator. Breathing from a 20-litre bag, filled previously at 2 litre min-1 from the concentrator was as effective as the conventional technique (PaO2 73.2 kPa). Supplying 4 litre min-1 ...
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In order to evaluate the performance of feedback fuzzy logic control of inspired oxygen and isoflurane concentrations, we studied 30 patients undergoing discectomy for lumbar (n = 26) or cervical (n = 4) disc herniation. Patients were allocated random to one of two groups: a standard group (n = 15) with low flow anaesthesia (1.2-1.3 litre min-1) and manual control of gas concentrations; and a f...
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Fresh gas flows of 1-5 l./min containing oxygen concentrations of 25-50% in nitrous oxide were led into a semiclosed circle absorber circuit. The resulting inspired oxygen concentrations were measured under conditions of spontaneous respiration. The lower the fresh gas flow, the greater was the discrepancy between fresh gas and inspired oxygen concentration. No association between minute volume...
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Sir,—Modern anaesthetic machines have a device (usually referred to as "the oxygen bypass" or "emergency oxygen") which enables the anaesthetist to administer high flows of 100% oxygen. When a patient is connected to an anaesthetic machine it is possible to overlook the fact that the emergency oxygen device is in the "on" position and is delivering 100% oxygen. This occurrence is most likely if...
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ژورنال
عنوان ژورنال: Anaesthesia and Intensive Care
سال: 1997
ISSN: 0310-057X,1448-0271
DOI: 10.1177/0310057x9702500416