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Both are measurements of the saturation of hemoglobin with oxygen in arterial blood.The difference is how the measurement is taken SpO2 is an indirect measurement using a finger probe, ear sensor or similar device. SaO2 is a direct measurement using a blood sample such as an arterial blood gas analysis.
SpO2 (peripheral capillary oxygen saturation) is a measurement of oxygen saturation in the blood using a pulse oximeter on the finger, while SaO2 (arterial oxygen saturation) is a measurement of oxygen saturation specifically in arterial blood, usually taken from a blood sample. While SpO2 is non-invasive and provides a quick estimate of oxygen levels, SaO2 is more accurate but requires a blood sample and laboratory analysis.
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What is the difference between PO2 and Sp02?
PO2 refers to the partial pressure of oxygen in the blood, typically measured via arterial blood gas analysis. SpO2, on the other hand, represents the oxygen saturation level in the blood, measured non-invasively through pulse oximetry. In simpler terms, PO2 shows how much oxygen is dissolved in the blood, while SpO2 indicates the percentage of hemoglobin carrying oxygen.
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What is the difference between PO2 and Sp02?
PO2 refers to the partial pressure of oxygen in the blood, typically measured via arterial blood gas analysis. SpO2, on the other hand, represents the oxygen saturation level in the blood, measured non-invasively through pulse oximetry. In simpler terms, PO2 shows how much oxygen is dissolved in the blood, while SpO2 indicates the percentage of hemoglobin carrying oxygen.
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