Blood oxygen levels under 90 percent are considered low and warrant immediate medical attention, according to the Mayo Clinic. A dangerous blood oxygen level, also called hypoxemia, occurs when a lower-than-average level of oxygen is circulating from the blood to the cells and tissues of the body. Normal blood oxygen levels are within the 95 to 100 percent range.Continue Reading
According to WebMD, symptoms of low blood oxygen levels include shortness of breath, fast heart rates, sweating, wheezing, mental confusion, coughing and changes in the color of the skin that can range from cherry red to blue. When these symptoms are experienced by any individual, WebMD recommends calling 911 emergency services immediately.
Causes of low blood oxygen levels include anemia; pneumonia; ARDs, or acute respiratory distress syndrome; COPD, or chronic obstructive pulmonary disease; pulmonary edemas; sleep apnea and congenital heart disease. Other causes of hypoxemia include interstitial lung disease, high altitudes, blocked airways and anesthetics or narcotic medications, according to the Mayo Clinic.
WebMD also lists severe asthma attacks as potentially life-threatening causes of hypoxemia. During these occurrences, the airways narrow, making it harder to get air into the lungs. Many individuals instinctively cough, which uses more oxygen and can exacerbate the problem. Therefore, individuals with asthma must always have their rescue inhalers on hand and adhere strictly to their medically supervised asthma treatment plan.Learn more about Medical Ranges & Levels
Causes of low blood oxygen levels include blocked airways, high altitudes, anemia, pneumonia, interstitial lung disease, acute respiratory distress syndrome and sleep apnea, according to Mayo Clinic. Other pulmonary conditions such as pulmonary edema, pulmonary embolism and pulmonary fibrosis also can cause low oxygen levels.Full Answer >
The normal level for blood oxygen is 95 to 100 percent, according to Mayo Clinic. A blood oxygen level under 90 percent is considered low.Full Answer >
Blood oxygen levels during sleep should be at a 95 percent saturation, which is considered normal, according to the American Sleep Apnea Association. A saturation of 86 percent rates as mild, while 80 to 85 percent is moderate, and 79 percent or less rates as severe. Sleep apnea occurs when airflow reduces by 80 percent. An airflow reduction to 50 to 80 percent qualifies as a hypopnea episode.Full Answer >
Blood sugar for diabetics reaches dangerous levels when patients are unable to treat themselves or when blood glucose levels go above 160 milligrams per deciliter or below 70 milligrams per deciliter. Hypoglycemia, which results from low levels of blood glucose, is not fatal by itself but can lead to accidents when patients fall down stairs or swerve into oncoming traffic, states the Joslin Diabetes Center.Full Answer >