But not everyone who has this disease has been so fortunate.

寻找肺高压的治愈方式。

So how on earth did you get access to this drug?

来开发肺高压的医治方法。

Seems we've found the culprit of Mr. Sherman's fate.

肺高血压 硬。

Is it the P.A.? I'm not seeing it.

是肺吗 我看不到啊。

And that's up in the pulmonary artery. The wire lead acts like permanent paddles on a heart.

在肺上。导线的作用就像心脏上的永久性片。

Blood flows from the left ventricle into the aorta and from the right ventricle into the pulmonary arteries.

血从左心室流入主，以及从右心室流入肺。

This is heard loudest in the aortic valve and pulmonary valve area.

这个声音可以在主和肺听诊区被清晰地听到。

This time, though, that blood comes from the pulmonary arteries, carrying deoxygenated blood.

不过，来自肺的血液不含氧。

Later in life, though, from years of increased pulmonary blood volume, patients might develop pulmonary hypertension, or higher pressures on the pulmonary side.

而在日后，由于数年的肺血流量增，患者可能患有肺高压，即肺的压力会高些。

A blood clot wedged into the lungs causing his heart to disfigure.

血栓堵在了肺，导致了心脏变形。

But, unlike the tricuspid valve, the pulmonary valve doesn't have any of those chordae tendineae.

但与三尖不同，肺没有腱索。

And to do that, the aortic valve, on the left side, and the pulmonic valve, on the right side, quietly open up.

为泵出血液，左边的主以及右边的肺安静地打开。

Notice though, that this one big artery does split into the aorta and pulmonary artery.

注意，这条大确实会分成主和肺。

The pulmonary arteries carry deoxygenated blood from the heart to the lungs.

肺将脱氧血从心脏输送到肺。

When the atria contracts, blood in the right atrium is forced through the tricuspid valve into the right ventricle.

当心室收缩时，右室血液经肺进入肺，同时三尖关闭防止血液回流至心房。

Right atrial enlargement is usually due to pulmonary hypertension.

右心房增大通常由肺高压引起。

Pulmonary vessels include the pulmonary artery and its branches, and the veins that drain the lung capillaries.

肺携带来自于右心室的低氧血液，而肺静将来自于肺的富氧血液运至左心房。

The " great arteries" , are these two main arteries taking blood away from the heart —the aorta and pulmonary artery.

大指的就是这两条把血液带离心脏的主要：主和肺。

Remember how fluid buildup increased pressure in the pulmonary artery?

还记得体液积聚如何增肺压力吧？

The greater the pulmonary obstruction, the more deoxygenated blood enters the systemic circulation, the more severe the symptoms.

肺梗阻越严重，越多低氧的血进入全身循环，症状越严重。