Generally speaking, the heart beats about 5 liters of blood per minute, which is about 5000 ml.
When the body needs more oxygen, nutrition or other substances, the cardiac output will increase accordingly. For example, in a low-oxygen environment such as strenuous exercise or high altitude, the cardiac output may increase to more than 8 liters. However, long-term high cardiac output may cause damage to the heart.
3. In addition, the blood volume that the heart may pump out may be different every time it beats. This is because the blood volume is related to the degree of heart filling. When the heart filling is too low, the amount of blood pumped will decrease, and if the heart filling is too high, it may lead to overload and heart failure.
4. The output per minute refers to the amount of blood injected from one ventricle per minute, which is also satisfactory. Cardiac output = stroke output × heart rate. The stroke output of normal people is about 60~80ml. The normal heart rate is generally 60~ 100 beats/min, which is not a fixed value and will fluctuate with people's exercise or emotional ups and downs.