What are premature heart beats? Causes of premature heart beats

What are premature heart beats? Many people don’t know much about this issue. Therefore, when they find such a situation, they have to go to the hospital for examination so that they will know what is going on with them. Generally, people with such a situation have heart disease, so in normal times, this type of people also need to protect themselves well, especially emotionally, and stay stable.

So what are premature heart beats? The following is a detailed introduction so that you can have a better understanding of this problem. And when it occurs, you will know what to do. If it is very serious, timely treatment is required to improve the symptoms.

Premature heart beats can occur in a variety of ways:

First, abnormal self-discipline leads to abnormal impulse formation

① Under certain conditions, such as when the sinus impulse reaches the ectopic pacemaker, the Weidensky phenomenon causes the threshold potential to decrease and the diastolic depolarization slope to change, causing premature beats.

② The permeability of the diseased atrium, ventricle or pulsatile field fiber cell membrane to different ions changes, causing the fast-response fibers to transform into slow-response fibers, thereby accelerating the automatic depolarization during diastole, enhancing autonomy, and producing premature beats.

The sinus impulse reaches the ectopic pacemaker, causing the threshold potential level to shift downward. As a result, the diastolic depolarization of the ectopic pacemaker reaches the threshold potential before the basic rhythm pacemaker, causing premature beats.

Second, the reentry phenomenon - circular reentry or focal microreentry. If the reentry pathway is the same, the premature beat morphology will be consistent; if the conduction velocity is consistent during the reentry, the pairing time of the premature beat with the previous beat will be fixed.

Third, parallel contraction

Fourth, trigger excitement

Through the above introduction, we have some understanding of what premature heart beats are. When such a situation occurs, don’t panic too much and go to the hospital for treatment in time. At the same time, in daily life, this group of people should also arrange their diet and rest time reasonably, which will help improve such symptoms.