Domiciliary oxygen concentrators in anaesthesia: preoxygenation techniques and inspired oxygen concentrations.
case_series · Level IV
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- Record sourced from PubMed, PMID 2121205.
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Abstract
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 to a drawover system was less effective (PaO2 35.5 kPa). We present a simple method for determining the inspired oxygen concentration obtained under conditions of drawover anaesthesia using an oxygen concentrator.
Medical subject headings
- Anesthesia, General
- Oxygen