Ready In. 30 m. Melt the butter or margarine in a large skillet over medium-high heat. Add the garlic and asparagus spears; cover and cook for 10 minutes, stirring occasionally, or until asparagus is tender. If you like your asparagus well done, reduce heat and cook an additional 10 minutes.
Another possible cause of low blood oxygen saturation is anemia, which occurs when the red blood cells don't have adequate hemoglobin, an iron-rich protein that acts as the oxygen carrier, according to the National Anemia Action Council. Anemia has many causes.
Hypoxic hypoxia can be caused by inadequate breathing as well as other causes. Anemic hypoxia -- In the setting of anemia, low hemoglobin levels result in a reduced ability of the blood to carry oxygen that is breathed in, and hence, a diminished supply of oxygen available to the tissues.