Q:

What is a normal SpO2?

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Quick Answer

According to Amperor Direct, in healthy people, normal SpO2, or blood oxygen saturation levels, should range from 94 to 99 percent. For a person with a mild respiratory disease, the value should be at least 90 percent.

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What is a normal SpO2?
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Full Answer

Oxygen saturation is the ratio of oxyhemoglobin to the total concentration of hemoglobin in the blood. Hemoglobin transports oxygen from the lungs to other parts of the body. It is an iron-containing protein bound to red blood cells, notes Amperor Direct. Oxyhemoglobin is hemoglobin that is a combination of hemoglobin and oxygen from the lungs. SpO2 values are obtained with the use of pulse oximetry, a noninvasive method to measure arterial blood oxygen saturation and pulse rate.

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Related Questions

  • Q:

    How is blood oxygen measured?

    A:

    Blood oxygen level is measured using pulse oximetry, a noninvasive procedure designed to monitor the delivery of oxygen to peripheral tissue, says Johns Hopkins Medicine. Pulse oximetry uses hemoglobin coloration and blood flow pulsation to measure the blood oxygen level.

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  • Q:

    What is the best flow rate of O2 for a patient with COPD?

    A:

    The ideal flow rate for patients with COPD intends to increase the levels of arterial partial pressure of oxygen (PaO2) to between 60 to 65 mm Hg, saturating the blood with 90 percent to 92 percent oxygen, according to WebMD. It has been shown that higher flow rates than this are not beneficial and can even pose risks for the patient. As with most medical treatments, there are both long-term and short-term benefits, as well as risks involved with using oxygen for patients with COPD.

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  • Q:

    What are normal blood gas values?

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    At sea level, the partial pressure of oxygen should be between 75 and 100 millimeters of mercury, and the partial pressure of carbon dioxide should be between 38 and 42 millimeters of mercury, notes MedlinePlus. The oxygen saturation of the blood should be between 94 and 100 percent.

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  • Q:

    What are the normal values of blood gases?

    A:

    The normal values of blood gases are partial pressure of 75 to 100 millimeters of mercury for oxygen and 38 to 42 millimeters of mercury for carbon dioxide. The normal arterial blood pH is 7.38 to 7.42, and oxygen saturation is 94 to 100 percent, as stated by MedlinePlus.

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