Oxygen therapy increases the amount of oxygen in the lungs and the
bloodstream. You may need oxygen therapy if there are signs that the cells of
your body are not getting enough oxygen.
You may use oxygen therapy at home or in the hospital if you have low
oxygen levels in your blood because of
pneumonia. You can choose between a number of delivery
systems and breathing devices.
Oxygen delivery systems
Oxygen delivery systems include:
- Concentrators, which take oxygen from the air.
These machines are electrically powered and fairly heavy [about
30 lb (13.6 kg)]. If you are
using a concentrator, you may want to use a cylinder if you leave your house,
as a cylinder is more portable than a concentrator. Concentrators are less
expensive than other delivery systems.
- Cylinders of oxygen. They
come in several sizes. The largest are too heavy to move around. Smaller
cylinders can be carried and provide about 5 hours of oxygen. Cylinders are
more expensive than concentrators, but less expensive than liquid
oxygen.
- Cylinders of liquid oxygen. Compared to cylinders of
oxygen, they contain more oxygen, weigh less, and are easier to use. However,
they are the most expensive option.
You can breathe your oxygen through a face mask, or a flexible
plastic tube inserted in your nostrils (nasal cannula).
- The nasal cannula gives you the greatest freedom
for moving around and talking. But this method may be more expensive than other
devices because of oxygen lost to the air. The amount of oxygen you actually
breathe may be less than with other methods of delivery.
- A face
mask is less portable and gets in the way of talking and eating.
Choose your oxygen delivery system based on your ability to move
around. People who are homebound may find an oxygen concentrator gives them the
best combination of convenience and cost.
In all oxygen delivery systems, the risk of fire or explosion is high
if you use oxygen around lit cigarettes or an open flame. If you or those who
care for you smoke, oxygen therapy may not be a good option.