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The inspired oxygen fraction (FIO2) delivered by the Hudson Oxy-one face mask was measured under changing conditions of ventilation, oxygen flow rate to mask, and mask fit. A single trained subject sat in a body plethysmograph to measure ventilation and breathed at a constant rate of 15 per minute at three different tidal volumes, of approximately 0.3, 0.6,(More)
The incidence of gastro-oesophageal reflux in children undergoing general anaesthesia has not previously been studied. One-hundred-and-twenty children (ASA Class 1-2) were studied intraoperatively using continuous oesophageal pH monitoring. The incidence of reflux was 2.5% (3 of 120). None of these three patients had an adverse respiratory event. There was(More)
Chordomas are rare tumours arising from the primitive notochord along the axial skeleton, typically from the sacrococcygeal region, spheno-occipital region and less commonly, the mobile spine. Midline location associated with bony involvement with extension to the surrounding tissues is the norm. Chordomas presenting laterally, centred within the neural(More)
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