The group also notes that radiation can cause heart rhythm disorders and structural damage in blood vessels and heart valves.

美国心脏协会还指出，辐射可能导致心律失常和血管和心脏瓣膜的结构损伤。

What you're really hearing there are the person's heart valves opening and closing.

真正听到的是人的心脏瓣膜打开和关闭。

Uh, so Naomi's heart valve...wh-what does this mean?

哦，那 Naomi 的心脏瓣膜...这是什么意思？

Pig heart valves have been used successfully for many years in humans.

的心脏瓣膜已被成功用于人类治疗很多年了。

I had an operation to fix a valve in my heart.

我做了一个手术来固定我心脏的瓣膜。

The heart surgery to correct a flawed valve was a resounding success.

修复有缺陷的瓣膜的心脏手术取得了巨大的成功。

We also remember that the semilunar valves, which are the valves that guard the arteries leaving the heart, are closed at this time.

我们还记得半月瓣，它是保护离开心脏的动脉的瓣膜，此时已关闭。

Now the heart is positioned in such a way that the sound of the closing of each of these valves is projected onto a small area on the chest wall.

现在每个心脏瓣膜关闭的声音被投射到胸壁的小范围位置上。

So, the next time you hear the familiar 'lub-dub, lub-dub' of your heartbeat, you can think about the valves of your heart at work.

因此，下次您听到心跳熟悉的" lub-dub，lub-dub" 时，您可以考虑一下工作中的心脏瓣膜。

This whole double-loop cycle plays out like a giant figure eight — heart to lung to heart to body to heart again — and runs off that constant high-pressure, low-pressure gradient exchange regulated by the heart valves.

这整个双环循环就像一个巨大的数字 8——心到肺到心到身体再到心——通过心脏瓣膜调节的恒定的高压和低压梯度交换运行。