Since the circulatory system is a closed loop, cardiac output and venous return are equal.

由于循环系统闭环，心输出和静脉回流相等的。

And again, just like with neural controls, these hormonal controls work by changing vessel resistance and cardiac output.

同样，就像经控制一样，这些荷尔蒙控制通过改变管阻力和心输出来工作。

In theory, this means that any change in resistance or cardiac output would also change blood pressure.

理论上，这意味着任何阻力或心输出的变化也会改变压。

So, with a little algebraic rearranging, you can see that blood pressure equals blood flow, or cardiac output, times resistance.

通过一些代数的新排列，你可以看到压等于流，或者心输出，乘以阻力。

Because of this the kidneys get about a quarter of the cardiac output which is blood getting pumped out of the left ventricle.

因此，肾流约占心输出（左心室输出）的1/4。

We previously learned that cardiac output is the amount of blood pumped per minute by each ventricle.

我们先前了解到，心输出每个心室每分钟泵出的液。

Therefore, we see that the sympathetic nervous system increases heart rate, which increases cardiac output.

因此，我们看到经系统会增加心率，从而增加心输出。

There are three important factors that affect mean arterial pressure: cardiac output, total peripheral resistance, and blood volume.

心输出，总外周阻力和容。

We also see that the parasympathetic nervous system decreases heart rate, which decreases cardiac output.

我们还看到副经系统降低了心率，从而降低了心输出。

This is also called cardiac output, and it's determined by the blood volume pumped during one beat, and the number of beats per minute.

这也被称为心输出，它由一次跳动中泵出的决定的，每分钟跳动的次数。

Therefore, if something increases or decreases the heart rate or stroke volume, it will increase or decrease the cardiac output, respectively.

因此，如果某因素增加或降低了心律或每博输出，则将分别增加或降低心输出。

Mean arterial pressure is influenced by three main factors, including cardiac output, total peripheral resistance, and blood volume.

平均动脉压受三个主要因素影响，包括心输出，总外周阻力和容。

In the opposite way, the parasympathetic nervous system can decrease the heart rate, which decreases the cardiac output.

副经系统以相反的方式，可以降低心率，从而降低心输出。

Cardiac output (CO) is the term used to show the amount of blood pumped per minute by each ventricle.

心输出（CO）用于显示每个心室每分钟泵的术语。

When heart rate and stroke volume increase, we see an increase in cardiac output.

当心率和每博输出增加时，我们发现心输出增加。

In addition, Healthcare professionals should titrate fluid administration and vasoactive or inotropic agents as needed to optimize blood pressure, cardiac output, and systemic perfusion.

此外，医疗保健专业人员应根据需要滴定液体给药和管活性剂或正性肌力药物，以优化压、心输出和全身灌注。

If your body needs more blood, then your heart will increase the cardiac output.

如果身体需要更多的液，则心脏会增加心输出。

Larger pericardial effusions, those over 100ml of fluid, can cause diminished heart sounds, and can even diminish cardiac output leading to shortness of breath, low blood pressure, and lightheadedness.

超过100毫升的大心包积液可使心音减弱，甚至会降低心输出，导致呼吸困难、低压与头晕。

T3 increases cardiac output, stimulates bone reabsorption thinning out the bones and then activates the sympathetic nervous system, the part of the nervous system responsible for our fight-or-flight response.

T3还会引起心输出增高，刺激骨骼再吸收，引起骨骼变薄并激活经系统；经系统主管着“战或逃”反应。

These hormones raise both the heart rate and the blood volume, and therefore cardiac output, while also constricting vessels in less essential regions, increasing the overall resistance, and therefore pressure.

这些激素提高心率和容，从而提高心输出，同时也收缩不太要区域的管，增加整体阻力，从而增加压力。