On April 18, Takuo Aoyagi, known as ‘the father of modern blood oxygen measurement technology’, passed away at 84 in Tokyo. The pulse oximeter he invented is capable of measuring blood oxygen and haemoglobin oxygen saturation of patients in a non-invasive manner.

One of the most important test indicators during surgery

blood oxygen

According to reports, thousands of patients die each year because of undetected hypoxemia. In recent years, with the advent of pulse oximeters, blood oxygen saturation has been incorporated into the fifth life feature by the medical community, and many chronic diseases are life-threatening. Patients can use a pulse oximeter to monitor their own oxygen content at home, and grasp the body’s oxygen supply.

How to judge whether you are lack of oxygen?

By monitoring the blood oxygen saturation, the body’s oxygen supply can be indirectly determined. Blood oxygen saturation (SpO2) is one of the most important data in clinical medicine. Under normal circumstances, the blood oxygen saturation of normal human arterial blood is not less than 98%, and less than 90% is considered to be insufficient oxygen supply, which requires certain attention. There may be hypoxia and tissue hypoxia caused by bronchopneumonia, emphysema, and blood circulation diseases.

People who need to notice blood oxygen content

1 People who work and study for more than 12 hours a day

For people who are under high pressure for a long time, the oxygen consumption of the brain accounts for 20% of the total body oxygen uptake. If the brain is overworked, the oxygen consumption of the brain is bound to rise. However, the body’s oxygen intake is limited, with more consumption and less intake. In addition to causing problems such as dizziness, fatigue, poor memory, and unresponsiveness, it may also lead to severe damage to the brain’s heart muscle and even death from overwork.

2 People with vascular diseases (coronary heart disease, hypertension, hyperlipidemia, cerebral thrombosis, etc.)

People with coronary heart disease, hypertension, hyperlipidemia, cerebral thrombosis, etc., have lipid deposits in the blood vessel lumen, and poor blood flow can cause difficulty in oxygen supply. The body is “hypoxic” every day. With long-term mild hypoxia, the functions of organs such as the heart and brain, which consume large amounts of oxygen, will gradually decline. Severe hypoxia will lead to “myocardial infarction” and “cerebral infarction”. If oxygen is not supplied in time for emergency treatment, it will cause sudden death.

3 People with respiratory diseases (asthma, bronchitis, chronic bronchitis, pulmonary heart disease, etc.)

People with asthma, bronchitis, chronic bronchitis, pulmonary heart disease, etc., on the one hand, breathing difficulties will lead to insufficient oxygen uptake, on the other hand, the continued asthma, will also block the small branch organs, making gas exchange difficult, leading to hypoxia and different degrees of damage to the heart, lungs, brain and even kidneys.

4 Elderly people over 60 years old
The elderly people’s heart and lung organs are physiologically ageing, with insufficient oxygen uptake and poor oxygen supply. Once the blood oxygen level is lower than the alert level, it will cause damage to organs such as the heart, lungs and brain.

5 People who fancy high-intensity sports
Real-time blood oxygen monitoring helps athletes to understand the blood circulation after a large amount of exercise, so as to guide the formulation of their exercise amount.

For people who travel to the plateau and resident journalists and others, through the monitoring of blood oxygen content, they can discover the problems of oxygen supply in the blood in advance, and avoid the cyanosis caused by altitude sickness.

A friendly reminder: The blood oxygen saturation level is a response to a person’s overall physical fitness. An adult’s blood oxygen saturation should not be less than 95%. Long-term lack of blood oxygen content is prone to serious consequences such as cardiac arrest, myocardial failure, and blood circulation failure.

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