Spo2 and ECG @patient monitor

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Relationship between blood oxygen saturation and heart rate

author: William Yin

2022-10-02

SpO2 is the abbreviation of pulse blood oxygen saturation, which refers to the ratio of the volume of oxygenated hemoglobin in the blood to the percentage of the volume of all conjugated hemoglobin, that is, the concentration of blood oxygen in the blood. It is clinically a reference index for patients' respiratory function.
The blood oxygen saturation of normal human arterial blood is 98%, and the normal value of venous blood is 75%. When the blood oxygen saturation decreases, it indicates that the oxygen content in the body decreases, and the state of hypoxia will occur. It is often caused by many reasons, such as respiratory distress caused by various reasons, lung trauma, inflammation, and even tumor, which lead to the decline of lung function and respiratory failure of different degrees.

Blood oxygen saturation is closely related to heart rate. When the blood oxygen saturation in the body decreases, the heart rate of the human body will be accelerated, mainly through the acceleration of the heart rate, which can effectively meet the body's metabolic needs of sufficient oxygen, which is also a normal physiological reflex and a protection mechanism for the human body.
Blood oxygen saturation is closely related to heart rate. When the blood oxygen saturation in the body decreases, the heart rate of the human body will be accelerated, mainly through the acceleration of the heart rate, which can effectively meet the body's metabolic needs of sufficient oxygen, which is also a normal physiological reflex and a protection mechanism for the human body.