Stroke volume refers to a measure to measure and monitor the comprehensive quality of a person or group in a specific time. It reflects the comprehensive level that a person or organization can achieve in a certain environment. Stroke volume can be used to evaluate the comprehensive quality of a person or group in a specific time, for example, in sports, work or other aspects.
The stroke volume of left ventricle and right ventricle is basically equal. Stroke output is equal to the difference between end-diastolic volume and end-systolic volume. The end-diastolic volume (that is, the ventricular filling volume) is about 130 ~ 145 ml, and the end-systolic volume (that is, the residual blood left in the ventricle at the end of ventricular ejection) is about 60 ~ 80 ml, so the stroke volume is about 65 ~ 70 ml.
Keep a dynamic balance with the amount of strokes. The more venous reflux per unit time, the more cardiac output. At this time, the main factor to increase cardiac output is not only the initial myocardial length (preload), but also the neuromodulation that increases heart rate and enhances myocardial contractility at the same time. The enhancement of myocardial contractility can not only increase cardiac output, but also accelerate venous blood flow back to the heart, so that the two can reach a new balance.
When arterial blood pressure rises, the indoor pressure must be increased accordingly to eject blood. If the myocardial contractility remains unchanged, the energy consumed by myocardial tension will increase relatively, and the energy used to shorten myocardial fibers will decrease relatively. During ejection, the degree and speed of myocardial fiber shortening will decrease, the ejection speed will slow down, and the stroke volume will decrease accordingly. Then, through adjustment, the preload is increased, and the myocardial contractility is strengthened to match the afterload, thus maintaining a suitable cardiac output.
Significance of stroke output
Stroke volume is the cardiac output per stroke, which refers to the amount of blood discharged by a heartbeat of a ventricle. Stroke output reflects the systolic function of myocardium. The stroke volume of the left and right ventricles is basically equal, and the stroke volume is equal to the difference between the end-diastolic volume and the end-systolic volume. So the end-diastolic volume is about 130 ~ 145 ml, and the end-systolic volume is about 60 ~ 80 ml, so the stroke volume is about 65 ~ 70 ml.
It is very important to reflect the balance between input and output. No matter enterprises, schools or social organizations, it is necessary to measure output frequently. For example, in an enterprise, we can consider the overall quality of employees, including skill level, ability level, emotional attitude, thinking logic and so on. , so as to measure the input-output ratio of enterprises.