Lack of oxygen has a great influence on the body. For example, the effects on central nervous system, liver and kidney function. During hypoxia, the compensatory heart rate accelerates, the heartbeat and cardiac output increase first, and the circulatory system compensates for the lack of oxygen content under high dynamics. At the same time, it can redistribute blood flow and selectively dilate brain and coronary vessels to ensure adequate blood supply.

However, in severe hypoxia, due to the accumulation of lactic acid under the endocardium, ATP synthesis decreases, leading to myocardial inhibition, which leads to bradycardia, premature beats, decreased blood pressure and cardiac output, and cardiac arrest such as arrhythmia and even ventricular fibrillation.

Extended data

Methods to improve oxygen saturation;

Use fixed or portable oxygen cylinders (tanks) to increase oxygen saturation. Oxygen supply companies provide such products with specific instructions. You can cover your nose and mouth with a mask attached to the equipment, and then breathe for the required time.

Exercise regularly. Exercise can promote blood circulation and improve oxygen level. Walking, swimming and jogging are some exercises that can improve oxygen saturation. If you have breathing problems, it is best to consult a doctor before incorporating exercise into your daily activities.

Take vitamins and iron every day. Eat a healthy diet rich in leafy vegetables, such as broccoli and spinach. It has been proved that anemia can lead to insufficient blood oxygen, so we should keep strong through proper diet and nutrition.

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