Hypoxemia is a condition marked by extremely low levels of oxygen in your body. Because oxygen is necessary to maintain healthy tissues in your body, hypoxemia is potentially fatal in severe cases. Normal blood oxygen levels are between 95 percent to 100 percent at sea level, according to the Mayo Clinic. When this value drops below 90 percent, borderline or mild hypoxemia begins, with severe cases showing readings below 80 percent. In some cases, hypoxemia is due to problems with proper functioning of the lungs due to illness or disease, such as airway obstruction, acute respiratory distress syndrome, chronic obstructive pulmonary disease, emphysema, interstitial lung disease, pneumonia, blood clots within the lungs, sleep apnea, scarring of the lungs and swelling of the lungs. Additional possible causes of hypoxemia include anemia or lack of oxygen-carrying red blood cells, decreased pumping of the heart, shock and narcotic medications. Some causes of hypoxemia have nothing to do with the overall health of the patient and are based on external factors. Examples include difficulty breathing due to high altitude or drops in pressure, carbon monoxide poisoning and smoke inhalation. Symptoms of hypoxemia include shortness of breath, fatigue, confusion and an inability to exercise or move. Hypoxemia is usually diagnosed through a simple blood test or the use of an oximeter, which clips to the end of a finger and measures the amount of oxygen in your body. When your doctor discovers the hypoxemia, she quickly will administer oxygen to you through a mask.Identification
Internal Causes
External Causes
Symptoms
Diagnosis and Treatment
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