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

寻找肺动脉高压的治愈方式。

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

来开发肺动脉高压的医治方法。

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

肺动脉高血压 动脉硬化。

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

是肺动脉吗 我看不到啊。

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

肺动脉上。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.

血从左心室流入动脉，及从右心室流入肺动脉。

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

这个声音可动脉瓣和肺动脉瓣听诊区被清晰地听到。

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

不过，来自肺动脉的血液不含氧。

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

而日后，由于数年的肺动脉血流量增加，患者可能患有肺动脉高压，即肺动脉的压力会高些。

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

血栓堵了肺动脉，导致了心脏变形。

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

但与三尖瓣不同，肺动脉瓣没有腱索。

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，左边的动脉瓣及右边的肺动脉瓣安静地打开。

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

注意，这条大动脉确实会分成动脉和肺动脉。

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

肺动脉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，右室血液经肺动脉瓣进入肺动脉，同时三尖瓣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动脉高压引起。

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

肺动脉携带来自于右心室的低氧血液，而肺静脉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.

大动脉指的就是这两条把血液带离心脏的要动脉：动脉和肺动脉。

Remember how fluid buildup increased pressure in the pulmonary artery?

还记得体液积聚如何增加肺动脉压力吧？

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

肺动脉梗阻越严重，越多低氧的血进入全身循环，症状越严重。