|
|
|
Many people with COPD need supplemental oxygen. There are three common ways of providing oxygen therapy. First, oxygen can be delivered to the home in the form of gas in various sized cylinders. Oxygen is stored under pressure in a cylinder equipped with a regulator that controls the flow rate. To avoid waste, an oxygen-conserving device may be attached to the system. This device releases oxygen only when a patient inhales and cuts off the oxygen during exhalation. Large cylinders are heavy and are only suitable for stationary use, while the smaller ones can be carried. Oxygen can also be delivered to the home in the form of a very cold liquid in a vessel similar to a thermos. When the liquid is released, it is converted to a gas and is inhaled just like compressed gas. This form of oxygen takes up less space than the compressed gas cylinder, and the liquid can be transferred to a small portable vessel at home. Liquid oxygen is more expensive than the compressed gas. The third way to provide oxygen therapy is with an oxygen concentrator. This electrically powered device separates the oxygen out of the air, concentrates it, and stores it. This system has a number of advantages because it does not have to be resupplied and is not as costly as other forms of oxygen. Extra tubing allows the user to move around with more mobility. It is important to have a cylinder of oxygen as a backup in case of a power failure. There are also three different ways to supply oxygen from the tank to an individual’s airways. A nasal cannula is a two-pronged device inserted in the nostrils. The tubing rests on the ears or is attached to the frame of eyeglasses. People who need a higher flow of oxygen use a mask. Some people who use a nasal cannula during the day prefer a mask at night or when their noses are irritated or clogged with a cold. Transtracheal oxygen therapy requires the insertion of a flexible catheter in the trachea or windpipe. The catheter is held in place by a necklace. Since this type of therapy bypasses the mouth, nose, and throat, a humidifier is required at specific flow rates. |
|