Each heartbeat can be broken into systole and diastole.

每次心跳都可被分解为收缩和舒张。

This part of the heartbeat, when blood is filling the relaxed ventricles is called diastole.

血液充满舒张的心室的这个时期被称为舒张期。

Cotton was the heartbeat of the section, the planting and the picking were the diastole and systole of the red earth.

棉本地区的脉搏，植棉和摘棉这红土心脏的舒张和收缩。

There are two phases of the heartbeat: diastole (relaxation) and systole (contraction).

这种舒张-收缩心动周期（舒张充盈，然后收缩射血）续约0。9秒，每分钟心脏博动70－80次。

So restrictive cardiomyopathy causes heart failure, and since filling happens during diastole, we say this is a type of diastolic heart failure.

因此限制型心肌病会导致心力衰竭，且由于血液进入心室发生在舒张期，所以我们说种舒张期心力衰竭。

Then at the end of diastole, the atria contract, filling the ventricles even more.

然后在舒张末期，心房收缩，使心室充满更多血液。

When the heart is in this state of relaxation, or diastole, the pressure within the heart is low.

当心脏处于这种放松或舒张状态时，心脏内的压力会很低。

The aorta dilates over time, which is a risk for aortic valve insufficiency, where blood leaks back into the left ventricle during diastole.

主动脉逐渐扩张，这主动脉瓣关闭不全的危险因素之；这种情况下，舒张期时血将反流至左心室。

The interval between S2 and the next S1 is when the ventricles relax and are filled with blood, called diastole.

S2和下个S1的时间间隔心室舒张充盈的时候，称为舒张期。

It's interesting to note that systole is shorter than diastole.

注意，收缩期比舒张期短。

The volume of blood in the ventricles at the end of diastole is referred to as the end-diastolic volume.

舒张末期心室中的血液量称为舒张末期血容量。

At the end of diastole, the ventricles have filled quite a bit and they're almost full.

舒张末期，心室内充满许多血液，几乎充盈。

S1, caused by the atrioventricular valves closing, at the beginning of systole, and S2, caused by the aortic and pulmonary valves closing, at the beginning of diastole.

S1由于房室瓣的关闭导致的，发生在收缩早期；S2由于主动脉瓣和肺动脉瓣的关闭导致的，发生在舒张早期。

This is when the aortic valve does not closse properly, resulting in blood flowing back to the left ventricle during diastole- the filling phase.

这当主动脉瓣关闭不全时，血液在舒张期——充盈时相反流至左心室产生的。

We previously learned that during the resting phase of the heart, known as diastole, the ventricles of the heart are passively filling with blood.

我们先前了解到，在心脏的舒张期（称为舒张期）中，心脏的心室会被动地充满血液。

Right after the S2 sound, the tricuspid and mitral valves open back up allowing blood to fill up the ventricles again and this period of time is called diastole.

在S2之后，三尖瓣和二尖瓣打开；让血液再次充盈心室，这段时期叫做心脏舒张期。

This pressure varies over the course of the cardiac cycle, increasing when blood is ejected from the heart(during systole), and decreasing as the heart relaxes(during diastole).

因血管内压力变化与心脏状况、动脉以及其因素有关，测量血压并对其认真解读能指导护理和帮助评估个人的健康状况。

Near the end of diastole, the ventricles nearly fill with blood, and then the atria contract, adding even more volume to the ventricles.

在舒张末期，心室几乎充满血液，然后心房收缩，心室容积增加。

What we see as a result is that the ventricles rapidly fill during diastole, and pressure within the ventricles begins to rise, along with the volume.

因此，在舒张期，心室迅速充盈，并且心室内的压力开始随容积增加。

Now, the " DUB" sound — and, just to be clear, I am not talking about dubstep sounds — that's the aortic and pulmonary semilunar valves closing at the start of diastole.

现在，“DUB”音——澄清下，我不在说 dubStep 音——主动脉和肺半月瓣在舒张期开始时关闭。