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> administration of 100% oxygen
frankvdb
Posted: May 8 2006, 03:29 PM
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is it true that in fact you can never give 100 % of oxygen to the patient?

when you ventilate the patient with bag en mask with oxygen reservoir and a flow of 15l/min then you have approximately an administration of 85 % ( that is wat is mentioned in the new guidelines ) so thus this mean that in fact you never can give 100 % oxygen to the patient , I suppose you can ?
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sgarth
Posted: May 12 2006, 12:48 PM
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Assuming what comes out of the cylinder is 100%, then you can give 100% by using a closed sytem such as tracheal intubation with balloon and ventilator. However with intubation and bagging, there is invariably a air contamination so it is probably somewhat lower.

Without tracheal intubation then you are correct it is accepted that you are giving about 80-85%, 90% max. using an oxygen flow of 15%

This is different if the air contains more oxygen, as in an oxygen tent or hyperbaric chamber.
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jsmit
Posted: May 18 2006, 10:54 AM
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Why should you want to give more? In the oxygendissociationcurve the higher oxygen percentages have no effect. Maybe oxygen is not as innocent as whe think.
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sgarth
Posted: May 19 2006, 10:22 AM
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I agree, I was simply answering the question asked.
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