Tim Allen. This is the latest accepted revision, reviewed on 7 April 2017. For those of the same or a similar name, see Timothy Allen (disambiguation). Timothy Allen Dick (born June 13, 1953), known professionally as Tim Allen, is an American actor, comedian and author.
Not necessarily. Some of the symptoms of low oxygen can be shortness of breath, fast heart rate, changes in the color of the lips and fingernails, but some people will have a low oxygen level without experiencing any of these symptoms. Others may experience these symptoms without having a low oxygen level.
Many patients with moderate to severe COPD get short of breath doing light activities and then wonder if they need oxygen. Although oxygen is necessary for some, many patients donât need it, even when they are symptomatic. When these patients are told that oxygen wonât help them, they donât always understand why. Air is made of various gases, 21 percent of which is oxygen. When we breathe in, air travels down the trachea, or windpipe, and into the bronchial tubes.