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Nowadays, SpO2 levels are widely mentioned and have become familiar to many, especially those affected by Covid. However, not everyone knows how to measure SpO2, and what is considered a good SpO2 level? To ensure the well-being of yourself and your family, understand the SpO2 chart and its meanings for each level below.
What is a good blood oxygen level?
1. What is SpO2 Index?
SpO2 (Saturation of peripheral oxygen) measures the oxygen saturation in peripheral blood. In other words, SpO2 represents the ratio of oxygenated hemoglobin to total hemoglobin in the blood. Alongside blood pressure, respiratory rate, temperature, and pulse, SpO2 is a vital survival indicator for the body, holding significant importance for our health.
Currently, we can quickly and easily measure the SpO2 index using a non-invasive device that doesn't require any intrusion. Simply place your fingertip, earlobe, or toe into the device, and it will use pulse oximetry to measure the oxygen saturation. The light waves passing through the measurement area (finger, toe, earlobe) change, and the device displays the SpO2 index results. Therefore, within a few seconds, you can obtain the measurement results.
You can refer to the article 'What is SpO2 in Covid?' by Mytour for detailed information and guidance on how to measure SpO2, factors affecting SpO2 changes. It provides a comprehensive understanding of the topic.
- Explore more: What does the SpO2 index mean?
2. What is a Good SpO2 Level?
How much oxygen concentration in the blood is dangerous? The SpO2 value is typically displayed as a percentage. If the SpO2 meter shows a result of 99%, it means that 99% of red blood cells are oxygenated, and 1% are deoxygenated hemoglobin.
The normal range for SpO2 is usually between 95% - 100%. However, if the SpO2 value is below 95%, it signals poor survival indicators and poor blood oxygenation. Specifically, individuals with this level are in a state of oxygen deficiency and may need supplemental oxygen.
The standard SpO2 levels are as follows:
- From 97 - 99%: Good blood oxygen levels.
- From 94 - 96%: Average levels, may require additional oxygen.
- From 90 - 93%: Low blood oxygen levels, seek medical attention for examination and treatment.
- Below 92%, with or without oxygen, and below 95%: Indications of severe respiratory distress.
- Below 90%: Emergency intervention is necessary.
SpO2 levels in children:
For children, a normal SpO2 level is above 90%, with levels above 95% being optimal. If a child has a level below 95% with oxygen or below 92% without oxygen, parents should take the child to the hospital or clinic for timely medical examination and intervention.
3. Causes of Low SpO2
Factors leading to low SpO2 levels
Typically, patients with low SpO2 levels experience one of the following causes:
- Respiratory diseases.
- Insufficient oxygen in the air.
- Poor blood circulation to the lungs.
- Conditions such as chronic bronchitis, pulmonary emphysema, asthma, pneumonia, heart disease, anemia, arterial blockage...
- Sleep apnea.
- Regular use of painkillers and addictive medications.
4. Symptoms Indicating Decreased SpO2 Levels
People with decreased SpO2 levels often exhibit the following symptoms. Pay attention to promptly measure SpO2 and consult a doctor.
- Coughing.
- Confusion, impaired memory.
- Changes in skin color.
- Shortness of breath.
- Irregular, fast, or unusually slow heartbeat.
5. What to Do When Blood Oxygen Level is Low?
If you have contracted COVID-19 or any other illness leading to a decrease in blood oxygen levels (SpO2), besides seeking medical attention, you can improve the levels at home by following these steps:
- Lie face down or on your side when sleeping.
- Incorporate antioxidant-rich foods into your diet.
- Practice slow and deep breathing regularly.
- Stay well-hydrated.
- Engage in gentle regular exercise.
Thus, if the SpO2 level drops low, it is highly dangerous. Therefore, monitor your SpO2 levels regularly to ensure your optimal health. If it falls below 94%, seek immediate medical attention for timely intervention.
