Doctors treat low oxygen (hypoxemia) primarily with supplemental oxygen therapy, delivered via nasal cannula, masks, or ventilators for severe cases, while also addressing the root cause with medications (like bronchodilators, steroids) or procedures, ensuring proper airway management and often using positive pressure to keep airways open, all tailored to the specific condition, like COPD, ARDS, or sleep apnea, and may involve home or hospital care.
Healthy pulse oximeter values often range from 95% to 100%. Values under 90% are considered low. Often, hypoxemia treatment involves receiving extra oxygen. This treatment is called supplemental oxygen or oxygen therapy.
Breathing in fresh air: Opening your windows or going outside for a walk can increase the amount of oxygen that your body brings in, which increases your overall blood oxygen level. Quitting smoking: Only two to three weeks after you quit smoking, your circulation will likely improve significantly.
In some circumstances, hypoxia resolves when the underlying condition is treated. In these cases, the need for supplemental oxygen goes away. In other circumstances, you may need chronic supplemental oxygen to ensure there is no ongoing hypoxia or tissue damage from low oxygen levels.
If your blood oxygen level is 88% or lower, call 911 or go to your nearest Emergency Department. If you need to go to the hospital, you will likely receive a blood test called an arterial blood gas, which can make sure your blood oxygen level is accurate so you can get treatment as needed.
Vital Signs
It may be helpful to have a baseline as some patients living with lung disease can tolerate low oxygen levels for months and months. Generally, if the oxygen level is 79% or lower, they will likely die in the next 24 hours.
The brain is the body organ most sensitive to lack of oxygen. Low oxygen concentrations can include giddiness, mental confusion, loss of judgment, loss of coordination, weakness, nausea, fainting, loss of consciousness, and death.
By analyzing arterial blood gas, calculating the A-a gradient, and assessing the response to 100% oxygen administration, healthcare providers can identify the specific type of hypoxemia. Left untreated over prolonged periods, hypoxia can result in irreversible organ damage and, ultimately, fatality.
There are many reasons you may need supplemental oxygen. One is if you are not getting enough oxygen (this is called hypoxia) after a bad case of pneumonia put you in the hospital. Symptoms of hypoxia include headaches, weakness, shortness of breath, fainting, chest pain, muscle pain and lightheadedness.
Between 30-180 seconds of oxygen deprivation, you may lose consciousness. At the one-minute mark, brain cells begin dying. At three minutes, neurons suffer more extensive damage, and lasting brain damage becomes more likely. At five minutes, death becomes imminent.
When you feel short of breath, pursed-lip breathing helps get more oxygen into your lungs and calms you down, so you can better control your breath. To practice pursed-lip breathing, sit down in a chair and relax your neck and shoulder muscles. Breathe in slowly through your nose, making sure to keep your mouth closed.
Silent hypoxia (also known as happy hypoxia) is generalised hypoxia that does not coincide with shortness of breath. This presentation is known to be a complication of COVID-19, and is also known in walking pneumonia, altitude sickness, and rebreather diving.
Supplemental oxygen can also help relieve your symptoms. You may feel relief from shortness of breath, fatigue, dizziness and depression. You may be more alert, sleep better and be in a better mood. You may be able to do more activities such as traveling, including traveling to high altitudes.
Some common causes of hypoxemia include:
Supplemental oxygen can be administered through various ways, including low-flow systems, high-flow devices, positive-pressure ventilation, or extracorporeal oxygenation. Oxygen therapy may also be required outside of healthcare settings; improper use can result in serious side effects, including increased mortality.
Both microtechnology and nanotechnology are cutting-edge alternatives for therapeutic and diagnostic use in a wide variety of pathologies [[88], [89], [90]]. They are also employed to transport and deliver drugs, and other molecules such as oxygen and nitric oxide, allowing an increase in pO2 [91,92].
Restlessness is an early sign of hypoxia. An elevated heart rate (above 100 beats per minute in adults) can be an early sign of hypoxia. An increased respiration rate (above 20 breaths per minute in adults) is an indication of respiratory distress. Shortness of breath is a subjective symptom of not getting enough air.
Fatigue: Feeling unusually tired or weak, even after adequate rest, can be a sign of low oxygen levels. Dizziness or Lightheadedness: Insufficient oxygen to the brain can cause feelings of dizziness or lightheadedness, especially when standing up quickly.
If your oxygen level is low for too long, serious problems can occur in many parts of the body. If you have a long-term (chronic) health condition that makes your blood oxygen levels too low, your doctor may prescribe oxygen. This is also called oxygen therapy or supplemental oxygen.
Contact your provider if your oxygen saturation level is 92% or lower. If it falls to 88% or lower, seek immediate medical attention. If you have questions about your results, talk to your provider.
Supplemental oxygen may be used to treat an ongoing risk of hypoxemia. Oxygen devices vary, but you can expect to get a machine that delivers extra oxygen through a breathing mask or small tube (cannula). You may receive oxygen at home, with a portable machine while you travel, or in the hospital.
Some medicines that can cause slow, shallow breathing can lead to hypoxemia. These include certain opioid pain relievers and medicines that prevent pain during surgery and other procedures, called anesthetics.
Postnasal Drip – Excess mucus can drip down the back of the throat, leading to coughing, throat irritation, and even shortness of breath. Reduced Oxygen Intake – When nasal congestion is severe, people may start breathing through their mouths.
When a healthy person exercises, the blood oxygen pressure (PaO2) and oxygen saturation (O2 sat) stays the same or increases. In a person with lung disease, during exercise the oxygen pressure and O2 sat may drop. This is called an oxygen desaturation.
People over 70 years of age may have oxygen levels closer to 95%. Normal oxygen saturation levels (SpO2) are between 95 to 100 percent for both adults and children. Oxygen saturation levels below 95% are considered abnormal, and the brain may be affected when SpO2 levels drop below 80 to 85 percent.