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.Know More
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
Under most ordinary circumstances, typical blood oxygen levels range from 95 to 100 percent according to the Mayo Clinic. Blood oxygen levels that are less than 90 percent are considered low.Full Answer >
A fasting blood-sugar level below 100 milligrams per deciliter is considered normal, according to Mayo Clinic. Those with fasting blood-sugar levels between 100 and 125 milligrams per deciliter are said to be pre-diabetic, and those with levels above 125 on two separate occasions are diagnosed with diabetes.Full Answer >
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 >
A low blood oxygen level, or hypoxemia, is considered anything under 90 percent, notes Mayo Clinic. A normal range is 95 to 100 percent. Blood oxygen level may be measured with a blood test or a pulse oximeter, which clips onto the finger and measures oxygen saturation through estimation.Full Answer >