No window is created into the left ventricular cavity so pathological Q waves do not develop.

左心室腔没有窗口，因此病理性Q波不会发展。

This may be associated with the development of pathological Q waves in the leads overlying the dead muscle.

这可能与死肌上覆导联的病理性Q波的发展有关。

You will remember from section 1 that a Q wave exists if the first deflection of the QRS complex is negative.

大家可能记得第一部分中，如果QRS波的第一个偏移是负的，Q波就存在。

A more precise definition of pathological Q waves will be given in the quiz section.

病理性Q波的更精确定义将在测验部分给出。

In the absence of treatment, the process may progress to complete transmural infarction of the area involved with development of pathological Q waves.

在没有治疗的情况下，这一过程可能进展到与病理性Q波发展有关的区域的完全跨壁梗死。

The traditional view of pathological Q waves as a late and permanent marker of irreversible myocardial death has been modified in recent years.

传统病理性Q波作为不可逆性心肌死亡的晚期和永久性标志物的观点近年来得到了改变。

Late pathological Q waves are a permanent marker of such an MI on the patient's subsequent ECGs.

晚期病理性Q波是患者随后ECG上心肌梗死的永久性标志。

However, the presence of Q waves should not be used to time the onset of an MI as early transient Q waves are a common variant.

然而，不应使用Q波来确定MI的发作时间，因为早期的瞬态Q波是常见的变体。

The development of pathological Q waves occurs nine to twelve hours after the onset of occlusion or in the days following infarction.

病理性Q波的发展发生在闭塞开始后9～12小时或梗死后几天。

Hence pathological Q waves may occur early in the course of STEMI and these early Q waves may be transient disappearing with successful treatment.

因此，病理性Q波可能在STEMI早期出现，这些早期Q波可能随着治疗的成功而暂时消失。

As a rule of thumb, a pathological Q wave tends to be deeper than two small squares and greater than one small square in duration.

根据经验法则，病理性Q波的深度往往大于两个小方格，持续时间则大于一个小方格。

It is important to be aware that in a proportion of cases Q waves and loss of R wave activity may develop very early in the course of STEMI.

重要的是要知道，在某些情况下，Q波和 R波活动丧失可能在STEMI过程早期发生。

Such early Q waves may disappear from the patient's ECG, a normal R wave progression may be restored if vessel patency is reestablished within the appropriate time frame.

患者心电图上，早期Q波可能消失，如果血管在适当的时间内恢复通畅，可以恢复正常的R波进程。

In effect, the infarct has created a window through which lead v6 can see the entire process of septal depolarization and the recorded Q wave becomes deeper and more prolonged.

实际上，梗死形成了一个窗口，v6导联可通过这个窗口看到室间隔去极化的整个过程，记录到的Q波变得越来越深，越来越长。

In this situation, the presence of Q waves still implies that the muscle underlying the lead is electrically inactive and failing to depolarize creating an electrical window into the left ventricle.

在这种情况下，Q波仍然意味着导联下的肌肉电活动不活跃，并且不能去极化，从而产生进入左心室的电窗口。