Many reasons...: If you are having low oxygen levels at times, you may be having fatigue. Also, you may have undiagnosed sleep apnea. This is a condition that causes low oxygen levels while you sleep from the stopping of breathing. This leads to episodes of waking throughout the night, sometimes many times during an hour. This leads to poor sleep and daytime fatigue. Get checked for this. Go in good health.
Answered 10/4/2016
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See doctor...: Increased sleepiness in a COPD patient can be due to decreased oxygen levels as well as increased carbon dioxide levels, a potentially serious combination. An arterial blood has analysis, or abg, can check both your oxygen and carbon dioxide levels so see your doctor for evaluation and treatment. If your symptoms are associated with increased shortness of breath, go to er.
Answered 6/10/2014
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