Oxygen Therapy and Supplemental Oxygen
16th September 2009 by admin No CommentsOxygen therapy refers to the administration of supplemental oxygen to patients suffering with a chronic or acute situation.
A chronic condition happens and develops over a period of time. For example emphysema – part of the chronic obstructive pulmonary disease set. An acute condition makes a sudden appearance and then disappears – which means getting better or getting worse. Another example a sudden attack of asthma can be an acute attack. On the other hand someone with asthma can have a chronic situation that becomes acute when it flares up.
Supplemental oxygen is administered in many emergency situations – and this can be in hospitals, ambulances or during resuscitation procedures.
When oxygen is given as part of the prescription for a chronic illness, this usually means COPD (Chronic Obstructive Pulmonary Disease). COPD is a term that refers to both emphysema and chronic bronchitis. This is an illness that affects many thousands of people – many of whom haven’t yet been diagnosed – and the numbers are increasing as populations grow older.
(Baby boomers are in the segment of the population that is most at risk).
Many times long term oxygen therapy is prescribed (and as “many” does not mean “always” the prescriptions will depend on the extent of the lung damage as well as other factors particular to the patient – which is one reason why no one should self diagnose or self prescribe) as lung damage is irreversible.
So what does Oxygen Therapy mean?
Basically it is the administration of extra oxygen to a patient so that the oxygen saturation levels of the individual are maintained. The normal oxygen saturation is between 94-98%, while in COPD patients this will vary to approximately 88-92%.
How is Oxygen delivered?
A flow of 100% oxygen is delivered through a “cannula” (a plastic tube that fits gently into the nostrils) at predetermined intervals, and flow rates; or for some cases an oxygen mask is used.
How is the Oxygen kept for delivery?
There are three different types of oxygen delivery and storage systems. You can find home units and their portable equivalents.
- Oxygen Cylinders, which hold compressed oxygen in gas form.
- Liquid Oxygen Tanks, which store liquid oxygen – in a smaller compartment the liquid is allowed to revert to gas and is subsequently delivered to the patient through a cannula.
- Oxygen Concentrators. These are machines that are powered by electricity an extract oxygen form the surrounding air. The oxygen is then delivered in pure form to the patient. As the surrounding air holds 78% nitrogen, 21% oxygen (and 1% approximately of other gases), the oxygen is separated and therefore concentrated prior to delivery.

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