But it wasn't that the solar output changed.

改的并不是太阳的输出量。

The heart rate is pretty intuitive, but the stroke volume's a little tricky.

心率非常直观，但每搏输出量的计算有点棘手。

And the stroke volume is a fraction of the total volume.

每搏输出量只是心室总容积量的一小部分。

On average, these patients had hearts pumping out 30% of the optimal volume of blood.

这的心输出量平均为全身血液量的30%。

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

由于循环系统是闭环，心输出量和静脉回流血量是相等的。

In this case again the stroke volume is low, but the ejection fraction's normal... how's that?

在这情况下，每搏输出量低，但射血分数显示正常，为什么会这样呢？

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量的会改血压。

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

同样，就像神经控制一样，这荷尔蒙控制通过改血管阻力和心输出量来工作。

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

通过一代数的重新排列，你可以看到血压等于血流量，或心输出量，乘以阻力。

If we suppose the volume of output to be given, i.e.

如果我们假设输出量是给定的， 即。

Severe hypoxia leads to high-output cardiac failure and massive hepatosplenomegaly, resulting in edema all over the body, called hydrops fetalis.

重度缺氧会引起高输出量性心力衰竭和巨大肝、脾，进而出现全身性水肿，称为水肿胎儿。

The stroke volume can also be increased or decreased.

每博输出量可以增加或减少。

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

如果身体需要更多的血液，则心脏会增加心输出量。

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，肾血流量约占心输出量（左心室输出量）的1/4。

One factor that can increase the stroke volume is an increased end-diastolic volume.

可增加每博输出量的一个因素是舒张末期容积增加。

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，包括心输出量，总外周阻力和血容量。

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

当心率和每博输出量增加时，我们发现心输出量增加。

Therefore, we see that an increase in end-diastolic volume, or 'preload, ' results in an increased stroke volume.

因此，我们看到舒张末期容积或" 预负荷" 增加导致每博输出量增加。

Britain's biggest problem today is not the deficit but stagnant productivity growth that leaves output per hour 2% below its peak in 2008.

如今，英国最大的问题不是赤字，而是生产力的停滞不前使得输出量相较于2008年的峰值正以每小时2%的速率下降。

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.

这被称为心输出量，它是由一次跳动中泵出的血量决定的，每分钟跳动的次数。