An atrial fibrillation notification popped up.

房颤提示立马弹了出来。

If an atrial cell outside of the SA node initiates a depolarization, it's called an atrial ectopic focus.

如果一个窦房结以外心房细胞引了一个除极，这个心房细胞被称为房性异位起搏点。

Sometimes premature atrial contractions can keep happening rather than being isolated events.

有时房性期前缩会生，而不是孤立事件。

For example, people with atrial arrhythmias might have atrial rates in the 200 to 300 beats per minute range.

例如，有房性心律失常患者可能存在房性心律；房性心律每分钟在200-300次左右。

Typically treatment for premature atrial contractions isn't required.

通常房性期前缩并不需要治疗。

Okay, so that's because atrial fibrillation means a quivering of your atrium and that predisposes you to clot formation.

那是因为心房颤动意味着心房颤抖这使你容易形成血块。

Now, sometimes, individuals might have an atrial septal defect, a small opening between the right and left atrium.

同时，某些人患有房间隔，即右心房与左心房之间有一个小口。

When that depolarization wave from an atrial ectopic focus gets to the AV node, there are a couple options.

当除极波从房性异位起搏点到达房室结，它有许多选择可做。

They were measuring two things: the number of what are called premature atrial contractions and premature ventricular contractions.

房性早搏和室性早搏数量。

Wait a minute, why would a clot go from the left atrial appendage to give them a stroke?

等一下，为什么血块会从左心房附件出来导致中风？

Another type of atrial ectopic focus is a reentrant loop, which is when there's some tissue that doesn't depolarize right.

另一类房性异位起搏点是一个折返环路，主要生在当某些组织不能正确地除极时候。

Atrial septal defect, but you feel it's an emergency?

- 房间隔，但您觉得这是紧急情况？

I must have nicked the right atrial appendage during the occlusion.

我一定是在封堵过程中割伤了右心耳。

The S.V.C. tear has posterior atrial involvement.

上腔静脉破累及到了心房后壁。

They found that drinking coffee did not result in more premature atrial contractions — the early heart beats associated with atrial fibrillation.

他们现，喝咖啡并没有导致更多房性早搏——与房颤相关心脏过早搏动。

On an ECG atrial flutter is characterized by absence of normal P wave.

在ECG上，心房扑动特征是没有正常P波。

Of note, since the heart is three-dimensional, the atrial appendage actually sits behind the central formation in frontal x-ray.

值得一提是，由于心脏是三维立体，正位胸片上看到心耳实际上位于心脏中央结构之后。

The atrial rate is regular and rapid - between 250 and 400 beats per minute.

房率规则且快速--250-400次/分钟。

This system transmits electricity along a precisely-timed pathway that ends with atrial and ventricular contractions — also known as heart beats.

这个系统通过精确定时途径传输电流，以心房和心室缩结束——也称为心跳。

Atrial septal defect is a defect within the upper two chambers of the heart.

- 房间隔是心脏上部两腔内。